岡山大学   助手

1994年4月 - 1998年6月

American Society for Precision Engineering

1998年 - 現在

電気加工学会   全国大会実行委員会実行委員長  

2024年1月 - 2024年12月   

精密工学会   秋季学術講演会実行絵委員会副委員長  

2023年12月 - 2024年9月   

Japan Society for Mechanical Engineering   LEM&P International Conference, Scientific Committee Member  

2023年   

電気加工学会   理事  

2010年 - 現在   

電気加工学会   英文誌編集委員会 委員  

2007年 - 2012年   

電気加工学会   西日本支部 幹事  

2005年 - 現在   

電気加工学会   会誌編集委員会 委員  

2001年 - 2004年   

High-quality Welding of Copper and Aluminum by Angled Laser Irradiation and Insert Metals 査読

Yasuhiro Okamoto, Yuki Yamada, Akira Okada, Masaki Miyake, Takeshi Yamamura, Katsutoshi Nagasaki, Norio Nishi

Proceedings of 43rd International Congress on Applications of Lasers & Electro-Optics 2024   2024年11月

Fundamental study on dielectric oil viscosity for high-performance wire EDM 査読 国際誌

Shixian Liu, Akira Okada, Tomohiko Kitamura

The International Journal of Advanced Manufacturing Technology   135 ( 7-8 )   3451 - 3461   2024年10月

Influence of Dielectric Oil Cooling-effect on Wire EDM Characteristics 査読 国際誌

Shixian Liu, Ren Sakata, Tomohiko Kitamura, Akira Okada

Proceedings of 20th International Conference on Precsion Engineering   2024年10月

Effect of Chromium Carbide Coating on Mold Releasability from Ground Surface in Compression Molding of Thermosetting Phenol Resin 査読

Ryoji Kitada, C. Sun, Q. Wang, K. Yoshida, A. Okada

Proceedings of The 20th International Conference on Precision Engineering   2024年10月

Highly Efficient Surface Smoothing of AMed Metal Products by Long-pulse Electron Beam Irradiation 査読 国際誌

Xuze Zhao, Togo Shinonaga, Akira Okada

Proceedings of The 20th International Conference on Precision Engineering   2024年10月

Study on Surface Smoothing of Metal Lattice Structures by Large area Electron Beam Irradiation Method 査読 国際誌

Seiya Miura, Togo Shinonaga, Atsushi Yamaguchi, Akira Okada

Proceedings of The 20th International Conference on Precision Engineering   2024年10月

Fundamental Study on Calcination of Limestone Particles by Near-infrared Wavelength Laser with Vibration Stirring 査読

Naoki Kotake, Yasuhiro Okamoto, Masakazu Oka, Shuji Fujiki, Shunjiro, Shizuka, Akira Okada

Proceedings of ICPE2024   Os10-11   2024年10月

Bent and Curved Hole EDM Drilling Using Suspended Ball Electrode with Guides

Atsushi YAMAGUCHI, Akira OKADA

Journal of the Japan Society for Precision Engineering   90 ( 9 )   696 - 700   2024年9月

Influence of Material Structure in Cemented Carbide on Fine Wire EDM Characteristics 査読 国際誌

Yuto Kuroda, Yudai Yamagami, Akira Okada

Proceedings of The 5th International Conference on Machining, Materials and Mechanical Technologies (IC3MT2024)   2024年9月

High-speed Observation of Bubble Exclusion Behavior in Fine Wire EDM 査読 国際誌

Shun Ishibashi, Hidetaka Okamoto, Akira Okada

Proceedings of The 5th International Conference on Machining, Materials and Mechanical Technologies (IC3MT2024)   2024年9月

Fundamental Study on Wire EDM Characteristics of Copper Diamond Composite 査読 国際誌

Koki Yoshida, Jiadong Sun, Akira Okada

Proceedings of The 5th International Conference on Machining, Materials and Mechanical Technologies (IC3MT2024)   2024年9月

Effect of Cooling Rate Control on Surface Modified Layer of Al-Cu Alloy by Large-area EB Irraadiation 査読 国際誌

Ayano Sebe, Togo Shinonaga, Akira Okada

Proceedings of Proceedings of The 5th International Conference on Machining, Materials and Mechanical Technologies (IC3MT2024)   2024年9月

Study on Surface Topography and Properties of Additively Manufactured Martensitic Stainless Steel Products 査読 国際誌

Yuki Matsuda, Togo Shinonaga, Atsushi Yamaguchi, Akira Okada

Proceedings of Proceedings of The 5th International Conference on Machining, Materials and Mechanical Technologies (IC3MT2024)   2024年9月

Fundamental Study on Influence of Residual Stress Distribution on Fatigue Strength in ns Pulsed Laser Peening for Welded High-Strength Steel 査読 国際誌

Shoma Okura, Hao Pan, Yasuhiro Okamoto, Akira Okada, Yoshihiro Sakino, Tomoharu Kato

Proceedings of The 5th International Conference on Machining, Material and Mechanical Technologies (IC3MT 2024)   5 - 11   2024年9月

Micro-structuring Characteristics on Metal Surface by High-speed Scanning of Angled CW Laser Irradiation 査読

Taiki Kawai, Riku Saitou, Atsuhiko Sakai, Yasuhiro Okamoto, Togo Shinonaga, Akira Okada

Technical Digest of the 25th International Symposium on Laser Precision Microfabrication – LPM2024   2024年6月

Investigation of Effective Gas Shielding Method for a Wide-area in Vertical-position Laser Welding of Titanium 査読 国際誌

Yasuhiro Okamoto, Togo Shinonaga, Akira Okada

International Journal of Electrical Machining   ( 29 )   20 - 29   2024年3月

Study on Surface Smoothing of Ceramics by Large-area Electron Beam Irradiation, 査読 国際誌

Ryoji Kitada, Togo Shinonaga, Akira Okada

International Journal of Electrical Machining   ( 29 )   35 - 40   2024年3月

Fundamental Study on Jetting Nozzle Diameter for Smooth Debris Exclusion in WIre EDM 査読 国際誌

Shixian Liu, Akira Okada

International Journal of Electrical Machining   29   27 - 34   2024年3月

Application of large-area electron beam irradiation to micro-edge filleting 査読 国際誌

Togo Shinonaga, Hibiki Tajima, Yasuhiro Okamoto, Akira Okada

Journal of Manufacturing Processes   107   65 - 73   2023年12月

Fundamental Study on Influence of Ground Surface Characteristics o n Mold Releasability in Compression Molding Using Thermosetting Phenol Resin 査読 国際誌

Qin Wang, Ryoji Kitada, Koki Yoshida, Akira Okada

Proceedings of The 10th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN 2023)   2023年11月

Fundamental Study on CO2 Laser Forming of Carbon Fiber Reinforced Thermoplastic Sheet 査読 国際誌

Ryoji Kitada, Sena Kizaki, Yasuhiro Okamoto, Akira Okada

Proceedings of The 10th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN 2023)   2023年11月

Fiber Laser Cutting of Steel Plate by Twin Spot Beam Setting in Scanning Direction 査読 国際誌

Yasuhiro Okamoto, Kota Morimoto, Naoki Kai, Akira Okada, Hiroaki Ishiguro, Ryohei Ito, Hiroshi Okawa

Journal of Laser Applications   35 ( 4 )   042049:1 - 042049:111   2023年10月

Fundamental Study onHigh-quality Welding of Copper and Aluminum by Angled and Superposed Irradiation of Blue and Near-infrared Lasers 査読 国際誌

Yuki Yamada, Yasuhiro Okamoto, Akira Okada, Norio Nishi, Takeshi Yamamura, Katsutoshi Nagasaki, Kazunobu Mameno

Journal of Laser Applications   35 ( 4 )   042005:1 - 042005-9   2023年9月

Stabilizing the absorption of laser energy in welding of copper 査読 国際誌

Yasuhiro Okamoto, Norio Nishi, Togo Shinonaga, Akira Okada

15th International Conference on Materials Processing and Characterization (ICMPC)   2023年9月

Investigation on improvement of wafer thickness uniformity in multi-wire EDM slicing 査読 国際誌

Takumi Yoshida, Haruya Kurihara, Yasuhiro Okamoto, Akira Okada

15th International Conference on Materials Processing and Characterization (ICMPC)   2023年9月

Surface smoothing of additively manufactured Ti-6Al-4 V alloy by combination of grit blasting and large-area electron beam irradiation 査読 国際共著 国際誌

Togo Shinonaga, Hiroya Kobayashi, Akira Okada, Toshiya Tsuji

The International Journal of Advanced Manufacturing Technology   127   5127 - 5137   2023年7月

Investigation on high-quality laser welding of copper and aluminum 招待 査読 国際誌

Yasuhiro Okamoto, Yuki Yamada, Akihiro Ochi, Akira Okada, Takeshi Yamamura, Katsutoshi Nagasaki, Kazunobu Mameno, Norio Nishi

International Conference on Processing & Manufacturing of Advanced Materials (THERMEC2023)   2023年7月

Study on Joint Characteristics in Laser Butt Welding of AMed and Wrought Ti6Al4V Plates 査読 国際共著 国際誌

Yasuhiro Okamoto, Togo Shinonaga, Yoshito Takemoto, Akira Okada, Akihiro Ochi, Ryuya Kishimoto, Sisa Pityana, Nana Arthur, Peter Omoniyi, Rasheedat Mahamood, Martin Maina, Esther Akinlabi

Welding in the World   67 ( 5 )   1997 - 2005   2023年6月

Micro-welding of Glass by Multiple Spot of Picosecond Pulsed Laser with Spatial Light Modulator 査読 国際誌

Ryo Takashima, Yasuhiro Okamoto, Akira Okada

Technical Digest of the 24th International Symposium on Laser Precision Microfabrication – LPM2023   R3-S15-3   2023年6月

Optimization of Dielectric Oil Resistivity on Wire EDM Characteristics 査読 国際誌

Shixian Liu, Akira Okada, Tomohiko Kitamura

Proceeding of the 16th international conference of the european society for precision engineering and nanotechnology   23   2023年6月

Investigation on Laser Welding of Copper and Aluminum by Irradiation from Copper-side 招待 査読 国際誌

Yasuhiro Okamoto, Yuki Yamada, Akihiro Ochi, Takeshi Yamamura, Katsutoshi Nagasaki, Kazunobu Mameno, Norio Nishi, Akira Okada

Proceedings of Laser in Manufacturing 2023   176   2023年6月

Fundamental Study on High-quality Micro-shape Fabrication on Monocrystalline Diamond by Nanosecond Pulsed Laser 国際誌

Kaichi Kawata, Yasuhiro Okamoto, Akira Okada

Technical Digest of the 24th International Symposium on Laser Precision Microfabrication – LPM2023   R3-S11-2   2023年6月

Effect of scanning speed on molten metal behaviour under angled irradiation with a continuous-wave laser 査読 国際誌

Tatsuhiko Sakai, Yasuhiro Okamoto, Nozomi Taura, Riku Saito, Akira Okada

Journal of Materials Processing Technology   313   117866 - 117866   2023年4月

Fundamental Study on Electrode Performance of Diamond Composite for EDM 査読 国際誌

Shun-ichiro Tsuetani, Koki Yoshida, Akira Okada

International Journal of Electrical Machining   ( 28 )   26 - 31   2023年3月

Improvement in Mechanical Properties of AMed Al-Si Alloy Surface by Large-area EB Irradiation 査読 国際誌

Togo Shinonaga, Hiroya Kobayashi, Atsuhi Yamaguchi, Akira Okada

International Journal of Electrical Machining   ( 28 )   20 - 25   2023年3月

Mo-rich layer formation on maraging steel and surface modification by large-area electron beam irradiation 査読 国際誌

Togo Shinonaga, Shun Watanabe, Atsushi Yamaguchi, Akira Okada

Journal of Materials Processing Technology   311   117813 - 117813   2023年1月

Influence of dielectric oil resistivity on wire EDM characteristics 査読 国際誌

Shixian Liu, Akira Okada, Tomohiko Kitamura

Proceedings of 4th International Conference on Machining Materials and Mechanical Technologies IC3MT2022   2022年11月

Influence of Nozzle Jet Flushing in Wire EDM on Machining Characteristics 査読 国際誌

Shogo KIMURA, Shixian LIU, Akira OKADA, Haruya KURIHARA

Proceedings of the 19th International Machine Tool Engineeris' Conference   2 - 3   2022年11月

Improvement in EDM Characteristics for Internal Space Shape Using Revolution Ball Electrode by Servo Control of Rotation Speed 査読 国際誌

Kodai Fujieda, Atsushi Yamaguchi, Akira Okada

Proceedings of 19th International Conference on Precision Engineering   C216   2022年11月

Influence of Focusing Position on Micro-groove Formation on Metal Surface by High-speed Scanning of Angled CW Laser Irradiation 査読 国際誌

Riku Saito, Yasuhiro Okamoto, Akira Okada, Tatsuhiko Sakai

Proceedings of 19th International Conference on Precision Engineering   2022年11月

Fundamental Study on Laser Forming of Carbon Fiber Reinforced Thermoplastic Sheet with Low Surface Damage by Using Pulsed CO2 Laser 査読 国際誌

Rina WATANABE, Ryoji KITADA, Yasuhiro OKAMOTO, Akira OKADA, Sena KIZAKI

Proceedings of 19th International Conference on Precision Engineering   2022年11月

Fabrication of High-quality Micro-shape on Monocrystalline Diamond Surface by Nanosecond Pulsed Laser and Acid Cleaning 査読 国際誌

Tsubasa Okubo, Yasuhiro Okamoto, Akira Okada

Proceedings of 4th International Conference on Machining Materials and Mechanical Technologies IC3MT2022   2022年11月

Improvement of Anodic Oxide Film Characteristics of Al-Cu Alloy by Large-area Electron Beam 査読 国際誌

Ikuya Miyamoto, Togo Shinonaga, Akira Okada

Proceedings of 19th International Conference on Precision Engineering   2022年11月

Investigation on Mechanism of Edge Shape Change in Large-area Electron Beam Irradiation by Thermo-fluid Analysis 査読 国際誌

Hibiki Tajima, Togo Shinonaga, Akira Okada

Proceedings of 4th International Conference on Machining Materials and Mechanical Technologies IC3MT2022   2022年11月

Influence of surface roughness of die sinking EDM on mold releasability in compression molding of thermosetting phenol resin 査読 国際誌

Ryoji Kitada, Qin Wang, Shun-ichiro Tsuetani, Akira Okada

Procedia CIRP   113   238 - 243   2022年10月

Optimization of Dielectric Oil Viscosity for High-precision Wire EDM 査読 国際誌

Shixian LIU, Shogo KIMURA, Akira OKADA, Tomohiko KITAMURA

Procedia CIRP   113   244 - 249   2022年10月

Influence of Nozzle Jet Flushing in Wire EDM of Workpiece with Stepped Thickness 査読 国際誌

Shogo KIMURA, Hiroki IWAI, Shixian LIU, Akira OKADA, Haruya KURIHARA

Procedia CIRP   113   149 - 154   2022年10月

Study on Smoothing of Hole Wall Surface by Electron Beam Polishing under Control of Magnetic Field 査読 国際誌

Togo SHINONAGA, Jiayu LU, Motohiro INOUE, Akira OKADA

Procedia CIRP   113   536 - 540   2022年10月

Synergy Effect of Abrasive Blasting and Large-area EB Irradiation on Surface Finishing of AMed Titanium Alloy 査読 国際誌

Hiroya KOBAYASHI, Togo SHINONAGA, Toshiya TSUJI, Akira OKADA

Procedia CIRP   113   318 - 322   2022年10月

Fiber laser cutting of steel materials with twin spot beam-twin spot setting in kerf width direction 査読 国際誌

Kota Morimoto, Atsushi Yagi, Naoto Kai, Yasuhiro Okamoto, Akira Okada, Hiroaki Ishiguro, Ryohei Ito, Akihiko Sugiyama, Hiroshi Okawa

Journal of Laser Applications   34   042009-1 - 042009-7   2022年9月

Study on Joint Characteristics in Laser Butt Welding of AMed and Bulk Ti6Al4V Plates 査読 国際共著 国際誌

Yasuhiro Okamoto, Togo Shinonaga, Yoshito Takemoto, Akira Okada, Akihiro Ochi, Ryuya Kishimoto, Sisa Pityana, Nana Arthur, Peter Omoniyi, Rasheedat Mahamood, Martin Maina, Esther Akinlabi

Proceedings of IIW 2022 International Conference on Welding and Joining   469 - 472   2022年7月

High-quality Micro-shape Fabrication of Monocrystalline Diamond by Nanosecond Pulsed Laser and Acid Cleaning 査読 国際誌

Yasuhiro Okamoto, Tsubasa Okubo, Atsushi Kajitani, Akira Okada

International Journal of Extreme Manufacturing   4   25301   2022年3月

Improvement in Corrosion Resistance of Al-Cu Alloy by Large-area Electron Beam Irradiation 査読 国際誌

Togo Shinonaga, Shun Watanabe, Akira Okada

International Journal of Electrical Machining   27   22 - 27   2022年3月

Study on Laser Drilling Process of Solid Metal on Its Liquid 査読 国際誌

Yasuhiro Okamoto, Nozomi Taura, Akira Okada

International Journal of Electrical Machining   27   35 - 39   2022年3月

Effects of superposition of 532 nm and 1064 nm wavelengths in copper micro-welding by pulsed Nd:YAG laser 査読 国際誌

Martin Ruthandi Maina, Yasuhiro Okamoto, Kazuki Hamada, Akira Okada, Shin-ichi Nakashiba, Norio Nishi

Journal of Materials Processing Technology   299   117388   2022年1月

Fundamental Study on Factors of Mold Releasability from Milling Surface in Compression Molding of Thermosetting Phenol Resin 査読 国際誌

Ryoji KITADA, Qin WANG, Kazuhiro KAWAGUCHI, Shun-ichiro TSUETANI, Akira OKADA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   C08   2021年11月

Investigation on reduction of dross height by analyzing beam intensity distribution in fiber laser cutting 査読 国際誌

Naoto Kai, Yasuhiro Okamoto, Akira Okada, Hiroaki Ishiguro, Ryohei Ito, Akihiko Sugiyama, Hiroshi Okawa, Rio Fujita

Journal of Laser Applications   33 ( 4 )   042008 - 042008   2021年11月

Fundamental Study on Laser Forming Characteristics of Carbon Fiber Reinforced Thermoplastic Sheet 査読 国際誌

Ryoji KITADA, Rina WATANABE, Takashi KAWAZOE, Yasuhiro OKAMOTO, Akira OKADA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   D26   2021年11月

Fundamental Study on Surface Texturing of Alloy Steel by Ultrashort Pulsed Laser for Control of Water Repellency 査読 国際誌

Kentaro MURATA, Togo SHINONAGA, Yasuhiro OKAMOTO, Akira OKADA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   D25   2021年11月

Fundamental Investigation of Working fluid Flow Formed by High-speed Wire Running in Multi-wire EDM Slicing 査読 国際誌

Shusei TABUCHI, Yasuhiro OKAMOTO, Akira OKADA, Haruya KURIHARA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   G08   2021年11月

Direct Observation of Spark Locations in Fine Wire EDM Using High-speed Camera 査読 国際誌

Yu MIYAZAKI, Shixian LIU, Akira OKADA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   G07   2021年11月

Possibility of Compositionally Graded Surface Formation by Electrical Discharge Machining 査読 国際誌

Shun-ichiro TSUETANI, Yuki IKEUCHI, Akira OKADA, Ryoji KITADA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   G06   2021年11月

Influence of Working Oil Viscosity on Wire EDM Characteristics 査読 国際誌

Shixian LIU, Hiroki IWAI, Akira OKADA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   G03   2021年11月

Fundamental Study on Calcination Method of Limestone by Using CW Laser of Near-infrared 査読 国際誌

Takafumi MIYAJIMA, Yasuhiro OKAMOTO, Shuji FUJIKI, Masakazu OKA, Shunjirou SHIZUKA, Akira OKADA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   D24   2021年11月

Fundamental Study on Laser Micro-welding of Glass by Using Spatial Light Modulator 査読 国際誌

Kazuki IHORIYA, Yasuhiro OKAMOTO, Akira OKADA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   D22   2021年11月

Surface Smoothing and Surface Modification of Maraging Steel by Large-area EB Irradiation 査読 国際誌

Shun WATANABE, Togo SHINONAGA, Atsushi YAMAGUCHI, Akira OKADA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   D17   2021年11月

Fundamental Study on Side Surface Smoothing of Hole by Large-area EB Irradiation Method 査読 国際誌

Jiayu LU, Togo SHINONAGA, Motohiro INOUE, Akira OKADA

Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century   D16   2021年11月

Formation and Its Mechanism of High-speed Micro-grooving on Metal Surface by Angled CW Laser Irradiation 査読 国際誌

Nozomi Taura, Akiya Mitsunobu, Tatsuhiko Sakai, Yasuhiro Okamoto, Akira Okada

Journal of Laser Micro/Nanoengineering   16 ( 2 )   2021年10月

Influence of Free-electron Density Distribution on Mechanical Strength in Micro-welding of Glass by Picosecond Pulsed Laser 査読 国際誌

Zhiyong Ouyang, Yasuhiro Okamoto, Kazuki Ihoriya, Akira Okada

Journal of Smart Processing   10 ( 5 )   294 - 300   2021年9月

Cutting performance evaluation of boron-doped and undoped diamond coatings in drilling of CFRP laminates 査読 国際誌

Alexander Soldatov, Akira Okada, Hitoshi Ogawa

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture   095440542110406 - 095440542110406   2021年8月

Formation of Smooth and Flat Area for Monocrystalline Diamond by ns Pulsed Laser 査読 国際誌

Yasuhiro Okamoto, Tsubasa Okubo, Atsuya Kajitani, Akira Okada

Proceedings of Laser in Manufacturing 2021   21 - 24   2021年6月

Reliable and strong micro-welding of glass by ultrashort pulsed laser 査読

Yasuhiro Okamoto, Zhiyong Ouyang, Akira Okada

Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXI   11676   116760P-1 - 116760P-7   2021年3月

Surface Profile Variation of Periodic Surface Nanostructures Produced by Ultrashort Pulsed Laser for Enhancement of Cell Orientation 査読 国際誌

Togo Shinonaga, Shouno Kinoshita, Yasuhiro Okamoto, Akira Okada

International Journal of Electrical Machining   26 ( 26 )   54 - 59   2021年3月

Development of Cu-Zr Wire Electrode for High-performance Fine Wire EDM 査読 国際誌

Shizian Liu, Masato Miyoshi, Akira Okada, Naokuni Muramatsu, Kazuhiko Nomura

International Journal of Electrical Machining   ( 26 )   40 - 45   2021年3月

Highly Efficient Surface Repairing of AMed Metal Parts by Large-area EB Irradiation 査読 国際誌

Togo Shinonaga, Taisei Watanabe, Atsushi Yamaguchi, Akira Okada

Procedia CIRP   95   976 - 980   2021年1月

Clarification of Temperature Distribution for Metals with Different Thermal Conductivity in Large-area Electron Beam Irradiation 査読 国際誌

Shoya Ota, Tsubasa Sakai, Togo Shinonaga, Yasuhiro Okamoto, Akira Okada

Procedia CIRP   95   960 - 965   2021年1月

Investigation on Surface Smoothing of Mold Material by Pulsed Laser Irradiation of 532 nm 査読 国際誌

Kohei Umezu, Takuro Kozaki, Yasuhiro Okamoto, Akira Okada

Procedia CIRP   95   879 - 884   2021年1月

Influence of Nozzle Jet Flushing on Working Fluid Flow and Wire Electrode in Trim-cut WEDM 査読 国際誌

Hiroki Iwai, Tomonori Ebisu, Akira Okada, Haruya Kurihara

Procedia CIRP   95   250 - 254   2021年1月

Fundamental Study on Internal Space Forming by EDM 査読 国際誌

Yuta Inaba, Shuoxun Li, Atsushi Yamaguchi, Akira Okada

Procedia CIRP   95   215 - 219   2021年1月

Strength characterization of adhesive joint surface treated by large-area EB irradiation 査読 国際誌

Yuya OMIYA, Kenji TOYOTA, Ryota NAKANISHI, Togo SHINONAGA, Tadashi SHIOTA, Akira OKADA, Masahiro FUJII

Journal of Advanced Mechanical Design, Systems, and Manufacturing   15 ( 4 )   JAMDSM0052 - JAMDSM0052   2021年

Fundamental Study on High-speed Micro-grooving of Metal by Angled Irradiation of Single-mode CW Fiber Laser 査読 国際誌

Tatsuhiko Sakai, Yasuhiko Okamoto, Chie Katayama, Hirofumi Imai, Akira Okada

Applied Sciences   10 ( 23 )   Jan-33 - Nov-33   2020年12月

高性能微細ワイヤ放電加工実現のための Cu-Zr ワイヤ電極の開発 査読

劉 世賢, 三好 雅人, 岡田 晃,村松 尚国,野村 和弘

電気加工学会誌   54 ( 137 )   155 - 161   2020年11月

Release Resistance of Compression-molded Thermosetting Resin from EDMed Metal Mold 査読 国際誌

Ryoji Kitada, Yuki Ikeuchi, Akira Okada

Proceedings of the 18th International Conference on Precision Engineering (ICPE2020)   B-5-4   2020年11月

Study on High-efficiency and High-quality Micro-welding of Copper by Superposition of 532 nm and 1064 nm Lasers 査読 国際誌

Shota Kawasaki, Yasuhiro Okamoto, Martin Ruthandi Maina, Akira Okada, Shin -ichi Nakashiba, Norio Nishi

Proceedings of the 18th International Conference on Precision Engineering (ICPE2020)   B-6-2   2020年11月

Micro-welding Characteristics of Glass Plates with Gap by Picosecond Pulsed Laser 査読 国際誌

Fujiwara Takumi, Zhiyong Ouyang, Yasuhiro Okamoto, Akira Okada

Proceedings of the 18th International Conference on Precision Engineering (ICPE2020)   B-6-1   2020年11月

Development of Control Method by Variation Range of Gap Voltage in Multi-wire EDM Slicing with Group Power Supplying 査読 国際誌

Tomoya Takegawa, Shusei Tabuchi, Yasuhiro Okamoto, Akira Okada, Haruya Kurihara

Proceedings of the 18th International Conference on Precision Engineering (ICPE2020)   B-5-1   2020年11月

Fundamental Study on Micro-edge Filleting by Using Large-area Electron Beam Irradiation Method 査読 国際誌

Zehua Zhou, Tsubasa Sakai, Togo Shinonaga, Akira Okada

Proceedings of the 18th International Conference on Precision Engineering (ICPE2020)   B-6-4   2020年11月

Fundamental Study on Double-Layered Surface Formation by Electrical Discharge Machining 査読 国際誌

Yuki Ikeuchi, Shun-ichiro Tsuetani, Ryoji Kitada, Akira Okada

Proceedings of the 18th International Conference on Precision Engineering (ICPE2020)   B-5-5   2020年11月

Fundamental Study on High-Speed Surface Processing of Metal by Angled Irradiation of Single-Mode CW Fiber Laser 査読 国際誌

Tatsuhiko Sakai, Chie Katayama, Hirofumi Imai, Yasuhiko Okamoto, Akira Okada

Proceedings of 39th International Congress on Applications of Lasers & Electro-Optics 2020   2020年10月

Fundamental Study on Reduction of Dross in Fiber Laser Cutting of Steel by Shifting Nozzle Axis 査読 国際誌

Atsushi Yagi, Seigo Kadonaga, Yasuhiro Okamoto, Hiroaki Ishiguro, Ryohei Ito, Akihiko Sugiyama, Hiroshi Okawa, Rio Fujita, Akira Okada

Proceedings of 39th International Congress on Applications of Lasers & Electro-Optics 2020   2020年10月

Alumina film sputter deposition on mold steel by large-area electron beam irradiation 査読 国際誌

Togo Shinonaga, Masashi Takata, Motohiro Inoue, Akira Okada

International Journal of Precision Engineering and Manufacturing-Green Technology   s40684-020-00243-1   2020年7月

Evaluation of Mechanical Strength at High Energy Conditions in Micro-joining of Glass by Picosecond Pulsed Laser 査読 国際誌

Zhiyong Ouyang, Takumi Fujiwara, Yasuhiro Okamoto, Akira Okada

Technical Digest of the 21st International Symposium on Laser Precision Microfabrication (LPM2020)   2020年6月

ワイヤ放電加工におけるノズルフラッシングがコーナ加工形状に及ぼす影響 査読

岩井 宏樹, 劉 世賢, 蛭子 奉紀, 岡田 晃, 栗原 治弥

精密工学会誌   86 ( 6 )   480 - 485   2020年6月

放電加工による内部空間形状の創成に関する基礎的研究 査読

因幡 勇汰, LI SHUOXUN, 山口 篤, 岡田 晃

日本機械学会論文集   86 ( 892 )   20 - 00205   2020年6月

γ相黄銅めっき細線ワイヤを用いた微細ワイヤ放電加工特性の基礎的検討 査読

三好 雅人, 劉 世賢, 岡田 晃, 星間 昭人, 杭田 勝俊

日本機械学会誌論文集   86 ( 892 )   20 - 00213   2020年6月

Fundamental Investigation on EDM Characteristis of Lanthanum Hexaboride 査読 国際誌

Yuki Ikeuchi, Keita Fujii, Akira Okada

International Journal of Electrical Machining   ( 25 )   27 - 32   2020年3月

Effect of Numerical Aperture on Molten Area Characteristics in Micro-joining of Glass by Picosecond Pulsed Laser 査読 国際誌

Yasuhiro Okamoto, Zhiyong Ouyang, Takumi Fujiwara, Akira Okada

Welding in the World   64 ( 6 )   937 - 947   2020年3月

Fundamental study on internal space forming by EDM

Yuta Inaba, Shuoxun Li, Atsushi Yamaguchi, Akira Okada

Procedia CIRP   95   215 - 219   2020年

Fundamental study on machining of internal space shapes by EDM 査読 国際誌

Shuoxun Li, Yuta Inaba, Akira Okada, Atsushi Yamaguchi

Proceedings of 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   13th   B22   2019年11月

Fundamental investigation on EDM characteristics of lanthanum hexaboride applied for electron emission parts 査読 国際誌

Keita Fujii, Yuta Ikeuchi, Akira Okada

Proceedings of 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   B25   2019年11月

Fundamental study on fine wire EDM characteristics using γ-phase brass coated steel wire 査読 国際誌

Masato Miyoshi, Akira Okada, Takaaki Enomoto, Yoshiki Natsumeda

Proceedings of 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   86 ( 892 )   B23 - 00213   2019年11月

Investigation on Laser Drilling Process of Solid Metal on Its Liquid and Detection Method of Penetration State 査読 国際誌

Chikako Kawasaki, Yasuhiro Okamoto, Nozomi Taura, Tatsuhiko Sakai, Akira Okada

Proceedings of 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   B02   2019年11月

Fundamental Investigation on Reduction of Surface Roughness for Mold Material by μs Pulsed Laser of 532 nm 査読 国際誌

Takuro Kozaki, Yasuhiro Okamoto, Akira Okada

Proceedings of 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   B01   2019年11月

Change of Thickness of Removal and Modifed layers on Workpiece with Different Material Property by Larg-area EB irradiation 査読 国際誌

Tsubasa Sakai, Shoya Ota, Togo Shinonaga, Akira Okada

Proceedings of 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   B09   2019年11月

Fundamental Study on Surface Damage Repairing of AMed Metal Parts by Large-area Electron Beam Irradiation 査読 国際誌

Taisei Watanabe, Togo Shinonaga, Atsushi Yamaguchi, Akira Okada

Proceedings of 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   B06   2019年11月

Influence of Surface Temperature Field in Large-area Electron Beam Irradiation on Wear Resistance of Zirconia 査読 国際誌

Togo Shinonaga, Tsubasa Sakai, Motohiro Inoue, Akira Okada

Proceedings of 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   B08   2019年11月

Influence of Initial Surface State on Shape Change of LIPSS 査読 国際誌

Yuki Wada, Togo Shinonaga, Yasuhiro Okamoto, Akira Okada

Proceedings of 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   B06   2019年11月

Investigation of Micro-grooving of Metals by High-speed Scanning of CW Laser 査読 国際誌

Chie Katayama, Yasuhiro Okamoto, Tatsuhiko Sakai, Seigo Kadonaga, Akira Okada

Proceedings of 8th International Conference of Asian Society for Precision Engineering and Nanotechnology   B04   2019年11月

ワイヤ放電加工における加工粉排出向上のためのノズル噴射法の検討 査読

蛭子 奉紀, 岡田 晃, 栗原 治弥

日本機械学会論文集   85 ( 880 )   19 - 224   2019年11月

Effective Supplying Method of Shielding Gas in Vertical-position Laser Welding of Pure Titanium 査読 国際共著 国際誌

Yasuhiro Okamoto, Kyo Kitagawa, Seigo Kadonaga, Akira Okada, Esther T. Akinlabi, Sisa Pityana

Proceedings of 38th International Congress on Applications of Lasers & Electro-Optics 2019   M2020   2019年10月

Influence of numerical aperture on molten area formation in fusion micro-welding of glass by picosecond pulsed laser 査読 国際誌

Z. Ouyang, Y. Okamoto, Y. Ogino, T. Sakagawa, A. Okada

Applied Sciences   9 ( 7 )   1412-1 - 1412-16   2019年7月

Creation of Smooth and Flat Surface in Micro-machining of Monocrystalline Diamond by Pulsed Laser 査読 国際誌

Yasuhiro Okamoto, Takahiro Shimose, Atsuya Kajitani, Akira Okada

Proceedings of Laser in Manufacturing 2019   220   2019年6月

つり下げ電極を用いた放電加工による曲がり穴加工法の開発 ―チタン合金の放電加工特性と曲がり穴加工― 査読

山口 篤, 太田 浩平, 李 碩勛, 岡田 晃

精密工学会誌   85 ( 4 )   359 - 364   2019年4月

Surface Characteristics of Molding Die Treated by Electron Beam Irradiation 査読 国際誌

Yoshihito HAGIHARA, Masaaki SANO, Akira OKADA

International Journal of Electrical Machining   ( 24 )   13 - 20   2019年3月

Investigation of Separation Method for Gallium Nitride with Internal Modified Layer by Ultrashort Pulsed Laser 査読 国際誌

Yasuhiro Okamoto, Motoki Ota, Akira Okada

International Journal of Electrical Machining   24 ( 24 )   27 - 32   2019年3月

Study on Improvement of Wear Resistance for Zirconia by Large-area Electron Beam Irradiation 査読 国際誌

Togo Shinonaga, Mitsuhiro Kimura, Motohiro Inoue, Akira Okada

International Journal of Electrical Machining   ( 24 )   21 - 26   2019年3月

High surface quality micro machining of monocrystalline diamond by picosecond pulsed laser 査読 国際誌

Y. Okamoto, A. Okada, A. Kajitani, T. Shinonaga

CIRP Annals - Manufacturing Technology   68 ( 1 )   197 - 200   2019年

工作物の磁性が大面積電子ビーム照射における除去厚さおよび改質層厚さに及ぼす影響 査読 国際誌

酒井翼, 篠永東吾, 岡田晃

日本機械学会論文集(Web)   85 ( 880 )   19-00227   2019年

Effects of Concave Shape on Absorption Rate and Molten Volume in Micro-welding of Copper by Pulsed Nd:YAG Laser 査読

Kazuki Hamada, Martin Maina, Reiki Inoue, Yasuhiro Okamoto, Akira Okada, Norio Nishi, Shin-ichi Nakashiba, Tomokazu Sakagawa

Proceedings of the 17th International Conference on Precision Engineering (ICPE2018)   B-6-2   2018年11月

Improvement of Shape Accuracy in Multi-wire EDM Slicing of Semiconductor Ingot 査読 国際誌

Takayuki Ikeda, Yasuhiro Okamoto, Haruya Kurihara, Akira Okada, Masataka Kido

Proceedings of the 17th International Conference on Precision Engineering (ICPE2018)   B-5-18   2018年11月

Influence of Surface State in Micro-Welding of Copper by Nd:YAG Laser 査読

Martin Ruthandi Maina, Yasuhiro Okamoto, Reiki Inoue, Shin-ichi Nakashiba, Akira Okada, Tomokazu Sakagawa

Applied Sciences   8 ( 12 )   Jan-64 - Mar-64   2018年11月

Investigation of Assist Gas Flow to Improve Slope Angle of Kerf in Thick Plate Cutting of Mild Steel by Fiber Laser 査読

Kyo Kitagawa, Yasuhiro Okamoto, Akira Okada, Hiroaki Ishiguro, Akihiko Sugiyama, Hironobu Miyoshi, Ryohei Ito

Proceedings of 37th International Congress on Applications of Lasers & Electro-Optics 2018   M1305   2018年10月

Improvement of Slope Angle of Kerf in Thick Plate Cutting of Mild Steel by Fiber Laser 査読

Kyo Kitagawa, Yasuhiro Okamoto, Akira Okada, Hiroaki Ishiguro, Akihiko Sugiyama, Hironobu Miyoshi, Ryohei Ito

Proceedings of 37th International Congress on Applications of Lasers & Electro-Optics 2018   P115   2018年10月

Investigation on Osteoconductivity of EDMed Titanium Alloy Surface in Deionized Water 査読

Yuta lida, Keita Fujii, Togo Shinonaga, Akira Okada

Proceedings of 2018 International Conference on Machining, Materials and Mechanical Technologies   180 - 184   2018年9月

Fundamental Study on Curved Hole by EDM Drilling Using a Suspended Ball Electrode into Practical Materials 査読

Kohei Ota, Shuoxun Li, Akira Okada, Yasuhiro Okamoto, Atsushi Yamaguchi

Proceedings of 2018 International Conference on Machining, Materials and Mechanical Technologies   283 - 287   2018年9月

Influence of Molten Area on Joining Strength in Micro-welding of Glass by Picosecond Pulsed Laser 査読

Yuta Ogino, Zhiyong Ouyang, Yasuhiro Okamoto, Togo Shinonaga, Akira Okada

Proceedings of 2018 International Conference on Machining, Materials and Mechanical Technologies   194 - 198   2018年9月

High-speed Wire EDM by Newly Developed Copper-Zirconium Wire Electrode 査読

Ayaka Kuwada, Naokuni Muramatsu, Kazuhiro Nomura, Yasuhiro Okamoto, Akira Okada

Proceedings of 2018 International Conference on Machining, Materials and Mechanical Technologies   185 - 189   2018年9月

Study on Improvement of Wear Resistance for Zirconia by Large-area EB Irradiation 査読

Togo Shinonaga, Mitsuhiro Kimura, Motohiro, Inoue, Akira Okada

Proceedings of 2018 International Conference on Machining, Materials and Mechanical Technologies   190 - 193   2018年9月

Smoothing of Hole Bottom Surface by Guiding Electron Beam with Magnet 査読

Mituhiro Kimura, Togo Shinonaga, Motohiro Inoue, Akira Okada

Proceedings of 2018 International Conference on Machining, Materials and Mechanical Technologies   26 - 30   2018年9月

High Surface Quality Welding of Aluminum Using Adjustable Ring-mode Fiber Laser 査読

Martin Ruthandi Maina, Yasuhiro Okamoto, Akira Okada, Matti N?rhi, Jarno Kangastupa, Jorma Vihinen

Journal of Materials Processing Technology   258 ( 8 )   180 - 188   2018年8月

Stabilization of Fusion Micro-welding of Glass by Picosecond Pulsed Laser 査読

Yasuhiro Okamoto, Yuta Ogino, Togo Shinonaga, Akira Okada

International Conference on Processing and Manufacturing of Advanced Materials (THERMEC '2018)   2018年7月

Investigation of Surface Quality in High Speed Laser Welding of Aluminum Alloy using Adjustable Ring-mode Fiber Laser 査読

Martin Ruthandi Maina, Yasuhiro Okamoto, Akira Okada, Matti N?rhi, Jarno Kangastupa, Jorma Vihinen

2018 Sustainable Research and Innovation Conference   2018年5月

Influence of Intensity Distribution on Surface Quality in High Speed Laser Welding of Aluminum Alloy 査読

Martin Ruthandi Maina, Yasuhiro Okamoto, Akira Okada, Matti N?rhi, Jarno Kangastupa, Jorma Vihinen

TECHNICAL DIGEST of the Third Smart Laser Processing Conference, SLPCp8-P6, p.62   62   2018年4月

Control of Kerf Width in Multi-wire EDM Slicing of Semiconductors with Circular Section 査読

Yasuhiro Okamoto, Takayuki Ikeda, Haruya Kurihara, Akira Okada, Masataka Kido

Procedia CIRP   68   100 - 103   2018年4月

Study on Improvement of Wear Resistance for Zirconia by Large-area Electron Beam Irradiation 査読

Togo Shinonaga, Yasuaki Kimura, Tsubasa Sakai, Akira Okada

Procedia CIRP   68   178 - 183   2018年4月

Influence of Jet Flushing on Corner Shape Accuracy in Wire EDM 査読

Tomonori Ebisu, Akiyoshi Kawata, Yasuhiro Okamoto, Akira Okada, Haruya Kurihara

Procedia CIRP   68   104 - 108   2018年4月

Magnetic fixtures for enhancement of smoothing effect by electron beam melting 査読

Togo Shinonaga, Akira Okada, Hao Liu, Mitsuhiro Kimura

Journal of Materials Processing Technology   254   229 - 237   2018年4月

Mold Releasability of EDM Finished Surface Using Powder Mixed Working Fluid 査読

Ryoji Kitada, Keita Fujii, Ruixiang Wang, Akira Okada

International Journal of Electrical Machining   ( 23 )   24 - 31   2018年3月

Influence of Pulse Duration on Effective Energy on Material Removal in Micro-processing of Mild Steel by Several Hundred Nanoseconds Pulsed Laser 査読

Yasuhiro Okamoto, Mizuna Ito, Akira Okada, Togo Shinonaga

International Journal of Electrical Machining   ( 23 )   38 - 44   2018年

Study on Variation of Burr Height in Micro-deburring with Large-area Electron Beam 査読

Togo Shinonaga, Tsubasa Sakai, Yasuaki Kimura, Akira Okada

International Journal of Electrical Machining   ( 23 )   45 - 50   2018年

Influence of material property on thickness of modified layer generated by large-area electron beam 査読

Togo Shinonaga, Yasuaki Kimura, Tsubasa Sakai, Akira Okada

19TH CIRP CONFERENCE ON ELECTRO PHYSICAL AND CHEMICAL MACHINING   68   178 - 183   2018年

Effects of Polarization Direction on Removal Characteristics of Silver Nanowire Transparent Conductive Film by Ultrashort Pulsed Laser 査読

T. Shimose, Y. Okamoto, M. Oshita, N. Nishi, T. Shinonaga, A. Okada

Journal of Advanced Mechanical Design, Systems, and Manufacturing   12 ( 5 )   JAMDSM0100-1 - JAMDSM0100-5   2018年

Fundamental Study on Addition of Osteoconductivity to Titanium Alloy Surface by EDM 査読

Togo Shinonaga, Yuta Iida, Ryota Toshimitsu, Akira Okada

International Journal of Automation Technology   11 ( 6 )   869 - 877   2017年11月

Influence of Nozzle Jet Flushing on Wire Breakage in 1st-Cut Wire EDM from Start Hole 査読

Akiyoshi Kawata, Akira Okada, Yasuhiro Okamoto, Haruya Kurihara

Key Engineering Materials   749   45 - 50   2017年9月

Effects of Pulse Duration on Removal Characteristics of Silver Nanowire Transparent Conductive Film by Nanosecond Pulsed Laser 査読

Norio Nishi, Yasuhiro Okamoto, Masafumi Oshita, Akira Okada, Togo Shinonaga, Tomokazu Sakagawa

Journal of Materials Processing Technology   240   255 - 261   2017年2月

Improvement of curved hole EDM drilling performance using suspended ball electttrode by workpiece vibration 査読

A.Okada, A. Yamacuchi, K. Ota

CIRP Annals ?Manufacturing Technology   66 ( 1 )   189 - 192   2017年

Study on clarification of large-Area eb irradiation phenomenon by electron track analysis 査読

Yasuaki Kimura, Togo Shinonaga, Akira Okada

Key Engineering Materials   749 ( 749 )   118 - 123   2017年

Influence of nozzle jet flushing on wire breakage in 1st-cut wire edm from start hole 査読

Akiyoshi Kawata, Akira Okada, Yasuhiro Okamoto, Haruya Kurihara

Key Engineering Materials   749 ( 749 )   130 - 135   2017年

Study on Reduction of Discoloration Area in Micro-drilling of Multi-layered Artificial Skin by Picosecond Pulsed Laser 査読

Yasuhiro Okamoto, Akira Eguchi, Naoto Maeda, Akira Okada, Shogo Minagi, Qiuyue Pan, Keiji Jin, Goro Nishigawa

International Journal of Electrical Machining   ( 22 )   8 - 13   2017年

Improvement of Surface Characteristics for Long Life of Metal Mold by EDM in Chromium Powder MixedWorking Fluid. 査読

Ruixiang Wang, Ryoji Kitada, Ryota Toshimitsu, Akira Okada

International Journal of Electrical Machining   ( 22 )   26 - 30   2017年

Cutting Performance of Boron-doped Diamond Coated Tools in Drilling of CFRP 査読

Alexander SOLDATOV, Akira OKADA, Kensuke UEMURA, Hitoshi OGAWA

Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), B13   B13   2017年

Influence of Pulse Duration on Effective Energy on Material in Nanosecond Pulsed Laser Processing of Mild Steel 査読

Mizuna Ito, Togo Shinonaga, Yasuhiro Okamoto, Akira Okada

Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), D10   D10   2017年

Effects of Polarization Directionon Removal Characteristics of Silver Nanowire Transparent Conductive Film by fs Pulsed Laser 査読

Takahiro Shimose, Yasuhiro Okamoto, Masafumi Oshita, Norio Nishi, Togo Shinonaga, Akira Okada

Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), D09   D09   2017年

Study on Shape Variation of Periodic Surface Nanostructures Produced with Ultrashort Pulse Laser for Control of Cell Spreading Direction 査読

Shono Kinoshita, Togo Shinonaga, Yasuhiro Okamoto, Akira Okada

Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), D07   D07   2017年

Low-visibility Processing of Silver Nanowire Transparent Conductive Film by Pulsed Laser 査読

Yasuhiro Okamoto, Norio Nishi, Masafumi Oshita Takahiro, Shimose,Togo Shinonaga, Akira Okada, Tomokazu Sakagawa

Proceedings of 36th International Congress on Applications of Lasers & Electro-Optics 2017, M202   M202   2017年

Fundamental Study on Slicing Method of Gallium Nitride by Ultrashort Pulsed Laser 査読

Togo Shinonaga, Motoki Ota, Yasuhiro Okamoto, Akira Okada

The 18th International Symposium on Laser Precision Microfabrication Prpgram & Techunical digest, We1-O-9, p.132   132   2017年

Multi-wire EDM slicing of semiconductors with group power supplying method 査読

Yasuhiro Okamoto, Takayuki Ikeda, Haruya Kurihara, Akira Okada, Masataka Kido

Proceedings of euspen's 17th International Conference, 183-184   183 - 184   2017年

Expansion of Smoothed Area on Hole Bottom Surface by Setting Magnetic Block in Large-area Electron Beam Irradiation 査読

Togo Shinonaga, Mitsuhiro Kimura, Akira Okada

Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), D33   D33   2017年

Formation of Chromium Carbide on Carbon Tool Steel by EDM in Powder Mixed Working Fluid 査読

Ruixiang Wang, Yuta Iida, Ryoji Kitada, Akira Okada

Proceedings of the 9th International Conference on Leading Edge Manufacturing in 21st Century (LEM21), D31   D31   2017年

Characteristics of Spatter in Micro-drilling of Metal Sheet by Pulsed Nd:YAG Laser 査読

Yasuhiro Okamoto, Hibiki Yamamoto and Akira Okada

International Journal of Automation Technology   10 ( 6 )   874 - 881   2016年11月

Prediction of rounding phenomenon at corner tips in large-area electron beam irradiation 査読

Togo Shinonaga*,Akira Okada*,Tomoaki Miyoshi

International Journal of Machine Tools and Manufacture   110 ( 110 )   18 - 26   2016年11月

Effect of focusing condition on molten area characteristics in micro-welding of borosilicate glass by picosecond pulsed laser 査読

I. H W Nordin,Y. Okamoto*,A. Okada*,T. Takekuni ,T. Sakagawa

Applied Physics A: Materials Science and Processing   122 ( 5 )   492   2016年5月

Thermo-Mechanical Analysis on Thermal Deformation of Thin Stainless Steel in Laser Micro-Welding 査読

Mohd Idris Shah Ismail,Yasuhiro Okamoto*,Akira Okada*

International Journal of Manufacturing, Materials, and Mechanical Engineering   6 ( 2 )   51 - 66   2016年4月

Effect of wavelength and pulse duration on laser micro-welding of monocrystalline silicon and glass 査読

I. H W Nordin,Y. Okamoto*,A. Okada*,H. Jiang,T. Sakagawa

Applied Physics A: Materials Science and Processing   122 ( 4 )   400   2016年4月

Study on the movement of wire electrode during fine wire electrical discharge machining process 査読

Sameh Habib, Akira Okada

Journal of Material Processing Technology   227 ( 227 )   147 - 152   2016年1月

Influence of Electrical Discharge Machining Parameters on Cutting Parameters of Carbon Fiber Reinforced Plastic 査読

Sameh Habib, Akira Okada

Machining Science and Technology   20 ( 1 )   99 - 114   2016年1月

Study on Metal Film Formation by Large-area Electron Beam Irradiation 査読

Togo Shinonaga, Masashi Takata, Akira Okada, Sadao Sano

International Journal of Electrical Machining   21 ( 21 )   7 - 12   2016年

Control of modicied surface layer thickness in pulsed large-area EB irradiation 査読

Akira Okada, Togo Shinonaga, Motohiro Inoue

Electrotechnica and Electronica   51 ( 5月6日 )   215 - 220   2016年

つり下げ電極を用いた放電加工による曲がり穴加工法の開発-アルミニウム合金と合金工具鋼の放電加工特性と曲がり穴加工-. 査読

山口篤, 岡田晃, 三宅達也

精密工学会誌   82 ( 10 )   907 - 912   2016年

Investigation on Visibility of Drilled Hole in Laser Micro-drilling of Multi-layered Articicial Skin 査読

Yasuhiro Okamoto, Kiichi Asako, Naoto Maeda, Akira Okada, Shogo Miyanagi, Qiuyue Pan, Keiji Jin, Goro Nishigawa

International Journal of Electrical Machining   21 ( 21 )   13 - 17   2016年

Control of Surface Profile in Periodic Nanostructures Produced with Ultrashort Pulsed Laser 査読

Togo Shinonaga, Shouno Kinoshita, Yasuhiro Okamoto, Akira Okada

Proceedings of 35th International Congress on Applications of Lasers & Electro-Optics 2016 Paper#M601   601   2016年

Effects of Surface States on Light Absorption Characteristics in Micro-welding of Copper by Pulsed Nd:YAG laser 査読

Reiki Inoue, Takuya Wada, Yasuhiro Okamoto, Akira Okada

Proceedings of the International Conference on Machining, Materials and Mechanical Technologies IC3MT 2016 paper#P.66   66   2016年

Study on high efferent micro-deburring by large-area EB irradiation 査読

Togo Shinonaga, Yasuaki Kimura, Akira Okada, Tomoaki Miyoshi

Proceeding of the 16th international conference of the european society for precision engineering and nanotechnology paper#P.7.20   7   2016年

Investigation of Spatter Behavior in Micro-processing of Metal Sheet by Pulsed Laser 査読

Yasuhiro Okamoto, Akira Okada, Hibiki Yamamoto, Kento Shirasaya, Jari Kolehmainen, Togo Shinonaga

Technical Digest of the 17th International Symposium on Laser Precision Microfabrication (LPM2016)Paper#82   82   2016年

Insulation Characteristics and Visibility of Transparent Conductive Film Containing Silver Nanowires by Nanosecond Pulsed Laser 査読

Masafumi Oshita, Norio Nishi, Yasuhiro Okamoto, Togo Shinonaga, Akira Okada

TECHNICAL DIGEST of the Second Smart Laser Processing Conference Paper#82   82   2016年

Fundamental Study on Separation Method of Gallium Nitride with Internal Modified Layer by Ultrashort Pulsed Laser 査読

Motoki Ota, Yasuhiro Okamoto, Togo Shinonaga, Akira Okada

TECHNICAL DIGEST of the Second Smart Laser Processing Conference Paper#81   81   2016年

Effective Shielding Gas Supplying Method of Wide Area in Vertical-Position Laser Welding of Pure Titanium 査読

Kazuo Yokohara, Yasuhiro Okamoto, Akira Okada, Hikotaro Ochiai, Ryosuke Kimura, Shozo Ono, Masayuki Akase

TECHNICAL DIGEST of the Second Smart Laser Processing Conference Paper#67   67   2016年

Shape Change of Periodic Nanostructures Produced with Ultrashort Pulsed Laser on Titanium Surface 査読

Togo Shinonaga, Shono Kinoshita, Yasuhiro Okamoto, Akira Okada

TECHNICAL DIGEST of the Second Smart Laser Processing Conference Paper#52   52   2016年

High-speed Observation of Thin Wire Movement in Fine Wire EDM 査読

Takuya Kamei, Akira Okada, Yasuhiro Okamoto

Procedia CIRP   42 ( 42 )   596 - 600   2016年

High-speed Observation of Molten Area Formation in Microwelding of Glass by Picosecond Pulsed Laser 査読

Motoki Ota, Yasuhiro Okamoto, Imaduddin Helmi Wan Nordin, Togo Shinonaga, Akira Okada

Proceedings of the International Conference on Machining, Materials and Mechanical Technologies IC3MT 2016 paper#P.67   67   2016年

Investigation of Nanocrystalline Diamond Coating on Cutting Tools for CFRP 査読

Alexander SOLDATOV, Akira OKADA, Kensuke UEMURA

Proceedings of the International Conference on Machining, Materials and Mechanical Technologies IC3MT 2016 paper#P.102   102   2016年

Fundamental Study onSmoothing of Hole BottomSurface by Large-area Electron Beam Irradiation 査読

Hao Liu, Togo Shinonaga, Akira Okada, Motohiro Inoue

Proceedings of the International Conference on Machining, Materials and Mechanical Technologies IC3MT 2016 paper#P.71   71   2016年

Formation of Periodic Nanostructures with Femtosecond Laser for Creation of New Functional Biomaterials 査読

Togo Shinonaga, Shono Kinoshita, Yasuhiro Okamoto, Masahiro Tsukamoto, Akira Okada

Procedia CIRP   42 ( 42 )   57 - 61   2016年

Improvement in Surface Characteristics by EDM with Chromium Powder Mixed Fluid 査読

Ryota Toshimitsu, Akira Okada, Ryoji Kitada and Yasuhiro Okamoto

Procedia CIRP   42 ( 42 )   231 - 235   2016年

Influence of Pulse Duration on Processing Characteristics of Transparent Conductive Film Containing Silver Nanowires by ns Pulsed Fiber Laser 査読

Masafumi Oshita, Norio Nishi, Yasuhiro Okamoto, Akira Okada, Togo Shinonaga, Tomokazu Sakagawa

Procedia CIRP   42 ( 42 )   62 - 66   2016年

Investigation of Shielding Gas Supplying Method in Vertical-position Laser Welding of Pure Titanium 査読

Kazuo Yokohara, Yasuhiro Okamoto, Akira Okada, Hikotaro Ochiai, Ryosuke Kimura, Shozo Ono and Masayuki Akase

Procedia CIRP   42 ( 42 )   448 - 453   2016年

Reduction of Discoloration Zone in Micro-drilling of Multi-layered Artificial Skin by Picosecond Pulsed Laser 査読

Yasuhiro Okamoto, Togo Shinonaga, Akira Eguchi, Kiichi Asako, Naoto Maeda, Akira Okada, Shogo Minagi

Proceedings of 35th International Congress on Applications of Lasers & Electro-Optics 2016 Paper#M701   701   2016年

Effect of Surrounding Gas Condition on Surface Integrity in Microdrilling of SiC by ns Pulsed Laser 査読

Yasuhiro Okamoto, Kiich Asako, Norio Nishi, Tomokazu Sakagawa, Akira Okada

Applied Physics B Laser and Optics   119 ( 3 )   509 - 517   2015年6月

Influence of Bead Geometry on Weld Distortion in Laser Micro-welding of Thin Stainless Steel Sheet with High-speed Scanning 査読

Yasuhiro Okamoto, Satoshi Matsuoka, Tadanori Otowa and Akira Okada

International Journal of Electrical Machining   ( 20 )   9 - 15   2015年

Effect of Tilting Jet Flushing Nozzle on Wire EDM Performance 査読

Takuro Konishi, Akira Okada, Yasuhiro Okamoto, Haruya Kurihara

International Journal of Electrical Machining   ( 20 )   2 - 8   2015年

Experimental investigation on wire vibration during fine wire electrical discharge machining process 査読

Sameh Habib, Akira Okada

International Journal of Advanced Manufacturing Technology   ( 1433-3015 )   1 - 12   2015年

矩形ファイバを用いたナノ秒パルスレーザによるZnO 膜の除去加工におけるレーザ光強度分布の影響(共著) 査読

西則男, 岡本康寛, 横山豪人, 岡田晃, 中芝伸一, 酒川友一

精密工学会誌   81 ( 11 )   1033 - 1038   2015年

つり下げ電極を用いた放電加工による曲がり穴加工法の開発-小径曲がり穴加工のための電極球質量および直径の検討- 査読

山口篤, 岡田晃, 三宅達也, 池嶋俊貴

精密工学会誌   81 ( 11 )   1039 - 1044   2015年

Study on applicability of large-area EB irradiation to micro-deburring 査読

Tomoaki Miyoshi, Akira Okada, Yasuhiro Okamoto

Key Engineering Materials   656-657 ( 656-657 )   369 - 374   2015年

Wire breakage and deflection caused by nozzle jet flushing in wire EDM 査読

Akira Okada, Takuya Konishi, Yasuhiro Okamoto, Haruki Kurihara

CIRP Annals - Manufacturing Technology   64 ( 1 )   233 - 236   2015年

つり下げ電極を用いた放電加工による曲がり穴加工法の開発 ?つり下げ構造の最適化と複雑曲がり穴加工の可能性? 査読

山口 篤, 岡田 晃, 三宅 達也

精密工学会誌   81 ( 5 )   435 - 440   2015年

イオンビームによるステンレス鋼ナイフエッジのバリ取りと形状制御 査読

玉置 司, 岡田 晃, 植村 賢介, 宇野 義幸, 高木 利樹

精密工学会誌   81 ( 5 )   446 - 451   2015年

Effects of focusing condition on micro-welding characteristics of borosilicate glass by picosecond pulsed laser 査読

Tomohiro Takekuni, Yasuhiro Okamoto, Takahiro Fujiwara, Akira Okada, Isamu Miyamoto

Key Engineering Materials   656-657 ( 626-657 )   461 - 467   2015年

Study on surface characteristics of EDMed surface with nickel powder mixed fluid 査読

Shuhei Iwasaki, Ryoji Kitada, Akira Okada, Yasuhiro Okamoto

Key Engineering Materials   656-657 ( 656-657 )   375 - 380   2015年

Investigation of Laser Microdrilling Method for Multi-Layered Arti cial Skin 査読

Kiichi Asako, Yasuhiro Okamoto, Akira Okada, Shogo Minagi, Naoto Maeda, Qiuyue Pan, Keiji Jin, Goro Nishigawa

Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century   2015年

Effect of Focusing Condition on Micro-Welding Characteristic of Glass by ps Pulsed Laser 査読

Yasuhiro Okamoto, Imaduddin Helmi Wan Nordin, Togo Shinonaga, Tomohiro Takekuni, Tomokazu Sakagawa, Akira Okada

Proceedings of 34th International Congress on Applications of Lasers &Electro-Optics 2015, pp.244-249   244 - 249   2015年

Laser Micro-drilling of Multi-layered Arti cial Skin 査読

Yasuhiro Okamoto, Norio Nishi, Shin-ichi Nakashiba, Tomokazu Sakagawa, Akira Okada

Proceedings of Lasers in Manufacturing Laser in Manufactring 2015   2015年

Smart Laser Micro-welding of Difficult-to-weld Materials for Electronic Industry 査読

Yasuhiro Okamoto, Norio Nishi, Shin-ichi Nakashiba, Tomokazu Sakagawa and Akira Okada

Proceedings of Laser-based Micro- and Nano-Processing IX, Lasers and Application in Science and Engineering, Photonics West Conference 2015   9351   935102-1 - 935102-9   2015年

Fundamental Study on Metal Film Coating by Large-area EB Irradiation 査読

Masashi Takata, Togo Shinonaga, Akira Okada, Motohiro Inoue, Sadao Sano

Proceedings of 30th Annual Meeting of the American Society for Precision Engineering, Vol.62, pp.595-598   62   595 - 598   2015年

Evaluation of Molten Area in Micro-welding of Monocrystalline Silicon and Glass 査読

Imaduddin Helmi Wan Nordin, Yasuhiro Okamoto, Isamu Miyamoto, Akira Okada

Proceedings of 2nd International Manufacturing Engineering Conference 2015   2015年

Film Formation Mechanism in Alumina Coating by Large-area Electron Beam Irradiation 査読

Masashi Takata, Togo Shinonaga, Yasuhiro Okamoto, Akira Okada, Motohiro Inoue, Sadao Sano

Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century   595 - 598   2015年

Fundamental Study on Curved Hole Drilling Method by EDM with Suspended Ball Electrode 査読

Atsushi YAMAGUCHI, Akira OKADA, Tatsuya MIYAKE, Toshiki IKESHIMA

Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century, C25 4pages   2015.8 ( 0 )   _1104 - 1_   2015年

Investigation of Machining Con- trollabil lity in Multi-wire EDM Slicing with Group Power Supply- ing Method 査読

Akitoshi Suzuki, Yasuhiro, Okamoto, Akira Okada, Haruya Kurihara, Masataka Kido

Proceedings of the 8th International Conference on Leading Edge Manufac- turing in 21st Century   2015年

High-quality and Reliable Removal Method of ZnO by ns Pulsed Fiber Laser with Square Core Optical Fiber 査読

Norio Nishi, Yasuhiro Okamoto, Akira Okada, Shin-ichi Nakashiba, Tomokazu Sakagawa

Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century   2015年

Improvement of Surface Characteritics for Long Life of Metal Molds by Large-area EB Irradiation 査読

Akira Okada, Yasuhiro Okamoto, Yoshiyuki Uno, Kensuke Uemura

Journal of Material Processing Technology   214 ( 8 )   1740 - 1748   2014年8月

Formation of Internal Modified Line with High Aspect Ratio in Sapphire by Sub-nanosecond Pulsed Fiber Laser 査読

Yasuhiro Okamoto, Tomohiro Takekuni and Akira Okada

Journal of Laser Micro/Nanoengineering   9 ( 1 )   52 - 58   2014年3月

Fundamental Study on Releasability of Molded Rubber from Mold Tool Surface 査読

Akira Okada, Yasuhiro Okamoto, Adam Clare and Yoshiyuki Uno

International Journal of Advanced Manufacturing Technology   70 ( 5-8 )   1515 - 1521   2014年2月

Singulation Characteristics of Semiconductor Package Using Pulse Fiber Laser and SHG:YAG Laser 査読

Yasuhiro Okamoto, Ryoji Kitada, Akira Okada, Yoshiyuki Uno

International Journal of Electrical Machining   ( 19 )   28 - 33   2014年

連続発振半導体レーザ重畳パルスNd:YAGレーザを用いたアルミ合金の微細溶接におけるキーホール発現境界 査読

中芝 伸一, 岡本 康寛, 酒川 友一, 原田 昌宜, 岡田 晃

精密工学会誌   80 ( 4 )   419 - 424   2014年

Novel Micro-welding of Silicon and Glass by Ultrashort Pulsed Laser 査読

Yasuhiro OKAMOTO, Isamu MIYAMOTO, Jorma VIHINEN, Akira OKADA

Materials Science Forum   783-786 ( 783-786 )   2792 - 2797   2014年

Study on Possibility of Micro-deburring by Large-area Electron Beam Irradiation 査読

Hajime Yonehara, Akira Okada, Yasuhiro Okamoto

International Journal of Electrical Machining   ( 19 )   22 - 27   2014年

Effect of Wavelength and Pulse Duration in Laser Micro-welding of Glass and Monocrystalline Silicon 査読

I. H, W. Nordin, Y. Okamoto, I. Miyamoto, A. Okada

Proceedings of the 15th International Symposium on Laser Precision Microfabrication (LPM2014)   2014年

Investigation of Micro-welding Characteristics of Si and Glass by Picosecond Pulsed Laser 査読

I. H, W. Nordin, Y. Okamoto, I. Miyamoto, A. Okada

Proceedings of the First Smart Laser Processing Conference 2014 (SLPC2014) in Electro Proceedings   2014年

Development of Simple Power Supplying System in Multi-wire EDM Slicing Method 査読

Yasuhiro Okamoto, Akitoshi Suzuki, Atsushi Kimura, Akira Okada, Haruya Kurihara, Masataka Kido

Proceedings of 29th Annual Meeting of the American Society for Precision Engineering 251-254   251 - 254   2014年

Characterization of Absorptivity in Micro-welding of Copper by Pulsed Green Nd:YAG Laser 査読

Yasuhiro Okamoto, Shin-ichi Nakashiba, Takuya Wada, Tomokazu Sakagawa, Norio Nishi, Akira Okada

Proceedings of 33rd International Congress on Applications of Lasers & Electro-Optics 2014 M805 In USB   2014年

Improvement of Gas Shielding Effect in Vertical-position Laser Micro-welding of Titanium Alloy 査読

Kento Shirasaya, Yasuhiro Okamoto, Kazuo Yokohara, Shozou Ono, Ryousuke Kimura, Hikotaro Ochiai, Akira Okada

Proceedings of 33rd International Congress on Applications of Lasers & Electro-Optics 2014 P154 In USB   2014年

Effect of Jet Flushing with Tilting Nozzle in Wire Electrical Discharge Machining 査読

Akira Okada, Takuro Konishi, Yasuhiro Okamoto, Haruki Kurihara

Proceedings of the 14th euspen International Conference, Vol.2, pp.446-452   2 ( 2 )   446 - 452   2014年

Study on Applicability of Large-area EB Irradiation to Micro-deburring 査読

Tomoaki Miyoshi, Akira Okada, Yasuhiro Okamoto

Proceedings of the International Conference on Machining, Materials and Mechanical Technologies IC3MT 174   2014年

Effect of Surrounding Gas Condition on Surface Integrity in Micro-drilling of SiC by ns Pulsed Laser 査読

Yasuhiro Okamoto, Kiichi Asako, Norio Nishi, Tomokazu Sakagawa, Akira Okada

Technical Digest of 9th International Conference on Photo-Excited Processes and Applications、A107   2014年

Influence of Nozzle Jet Flushing on Wire Deflection and Breakage in Wire EDM 査読

Takuro Konishi, Sameh Habib, Akira Okada, Yasuhiro Okamoto, Haruya Kurihara

Proceedings of the International Conference on Machining, Materials and Mechanical Technologies IC3MT 178   2014年

Study on Surface Characteristics of EDMed Surface with Nickel Powder Mixed Fluid 査読

Syuhei Iwasaki, Ryoji Kitada, Akira Okada, Yasuhiro Okamoto

Proceedings of the International Conference on Machining, Materials and Mechanical Technologies IC3MT 177   2014年

Effects of Focusing Condition on Micro-welding Characteristics of Borosilicate Glass by Picosecond Pulsed Laser 査読

Tomohiro Tekekuni, Yasuhiro Okamoto, Takahiro Fujiwara, Akira Okada, Isam Miyamoto

Proceedings of the International Conference on Machining, Materials and Mechanical Technologies IC3MT 176   2014年

Fundamental Study on Sputter Deposition of Ceramic Film by Large-area EB Irradiation 査読

Shuhei Misumi, Akira Okada, Yasuhiro Okamoto

Procedia CIRP   6   487 - 492   2013年4月

Micro-welding of High Thermal Conductive Material Aluminum-Graphite Composite by Pulsed Nd:YAG Laser 査読

Mohd Idris Shah Ismail, Yasuhiro Okamoto, Akira Okada, Yoshiyuki Uno and Muhaizad Muktar

Journal of Laser Micro/Nanoengineering   8 ( 1 )   90 - 96   2013年1月

Improving the Productivity of Electrical Discharge Machining Process By Using Multi-Thin Electrodes 査読

Habib Sameh, Akira Okada, Yoshiyuki UNO

Machining Science and Technology   17 ( 1 )   110 - 128   2013年1月

Evaluation of molten zone in micro-welding of glass by picosecond pulsed laser 査読

Yasuhiro Okamoto, Isamu Miyamoto, Kristian Cvecek, Akira Okada, Kenta Takahashi, Michael Schmidt

Journal of Laser Micro Nanoengineering   8 ( 1 )   65 - 69   2013年1月

Neural Network Modeling for Prediction of Weld Bead Geometry in Laser Microwelding 査読

Mohd Idris Shah Ismail, Yasuhiro Okamoto and Akira Okada

Advances in Optical Technologies   ( 11 )   105 - 111   2013年

Investigation of Wire Movement in Fine Wire EDM by High Speed Observation 査読

Akira OKADA, Sho ICHII, Yasuhiro OKAMOTO

International Journal of Electrical Machining   ( 18 )   43 - 48   2013年

Influence of Polarization Plane on Groove Shape in Scribing of Sapphire by THG: YAG Laser 査読

Yasuhiro OKAMOTO, Shin-ichi NAKASHIBA, Tomokazu SAKAGAWA, Akira OKADA, Yoshiyuki UNO

International Journal of Electrical Machining   ( 18 )   49 - 54   2013年

Effect of Cutting Direction on Machining of Carbon Fiber Reinforced Plastic By Electrical Discharge Machining Process 査読

Sameh Habib, Akira Okada and Sho Ichii

International Journal of Machining and Machinability of Materials   13 ( 4 )   414 - 427   2013年

電子ビーム照射面に窒化処理を適用した金型綱の熱疲労特性について 査読

萩原義人, 佐野正明, 岡田 晃

電気加工学会誌   47 ( 115 )   88 - 96   2013年

プラズマ窒化処理がステンレス刃物の切断性能に及ぼす影響 査読

玉置 司, 岡田 晃, 植村賢介, 宇野義幸

精密工学会誌   79 ( 10 )   950 - 955   2013年

Micro-welding of Aluminium Alloy by Superposition of Pulsed Nd:YAG Laser and Continuous Diode Laser 査読

Yasuhiro Okamoto, Shin-ichi Nakashiba, Tomokazu Sakagawa, Akira Okada

The Paton Welding Journal   11 ( 11 )   105 - 111   2013年

Fundamental study on sputter deposition of ceramic film by large-area electron beam irradiation 査読

S. Misumi, A. Okada, Y. Okamoto, M. Inoue

PROCEEDINGS OF THE SEVENTEENTH CIRP CONFERENCE ON ELECTRO PHYSICAL AND CHEMICAL MACHINING (ISEM)   6   486 - 491   2013年

Numerical Study on Wire Deflection by Jet Flushing in Wire EDM 査読

Kazuki Kuriyama, Akira Okada, Yasuhiro Okamoto

Proceedings of 5th International Conference on Asian Society for Precision Engineering and Nanotechnology,   2013年

Fundamental Study on Micro-deburring by Large-area EB Irradiation 査読

Akira OKADA, Hajime YONEHARA, Yasuhiro OKAMOTO

Procedia CIRP   5 ( 5 )   19 - 24   2013年

Fundamental Study on Multi-Wire EDM Slicing of SiC by Wire Electrode with Track-shaped Section 査読

Atsushi Kimura, Yasuhiro Okamoto, Akira Okada, Jun Ohya, Toshiyuki Yamauchi

Procedia CIRP   6 ( 6 )   232 - 237   2013年

Study on Movement of Thin Tungsten Wire Electrode during Fine Wire EDM 査読

Naoki WATANABE, Akira OKADA, Yasuhiro OKAMOTO

Proceedings of the 7th International Conference on Leading Edge Manufacturing in 21st Century, pp.369-372   369 - 372   2013年

Precise Prediction of Shape Change at Convex Corner by Large-area EB Irradiation 査読

Koki KOYAMA, Akira OKADA, Yasuhiro OKAMOTO, Koji TABUCHI

Proceedings of the 7th International Conference on Leading Edge Manufacturing in 21st Century, pp.358-365   358 - 365   2013年

Fundamental Study on Micro-welding of Copper by Green Pulsed YAG Laser 査読

Sunao TAKAI, Shin-ichi NAKASHIBA, Yasuhiro OKAMOTO, Akira OKADA, Tomokazu SAKAGAWA

Proceedings of the 7th International Conference on Leading Edge Manufacturing in 21st Century, pp.35-38.   35 - 38   2013年

Fundamental Characteristics of Spatter in Micro-drilling of Metal Sheet by Pulsed Nd:YAG Laser 査読

Kento SHIRASAYA, Yasuhiro OKAMOTO, Akira OKADA

Proceedings of the 7th International Conference on Leading Edge Manufacturing in 21st Century, pp.43-46.   43 - 46   2013年

Investigation of Micro-drilling Characteristics for SiC by Harmonics of YAG Laser 査読

Shin URUSHIBATA, Yasuhiro OKAMOTO, Akira OKADA, Shin-ichi NAKASHIBA, Tomokazu SAKAGAWA

Proceedings of the 7th International Conference on Leading Edge Manufacturing in 21st Century, pp.39-42.   39 - 42   2013年

Study on Releasability of Molded Resin from EDM Finished Surface with Metal Powder Mixed Fluid 査読

Akira Okada, Ryoji Kitada, Shuhei Iwasaki, Yasuhiro Okamoto

Proceedings of 28th Annual Meeting of the American Society for Precision Engineering   2013年

Singulation of Semiconductor Package by Superposition of Pulsed Fiber Laser and Green YAG Laser 査読

Yasuhiro Okamoto, Kento Shirasaya, Ryoji Kitada, Akira Okada

Proceedings of 32nd International Congress on Applications of Lasers & Electro-Optics 2013   829 - 835   2013年

Influence of Weld Bead Geometry on Thermal Deformation in Laser Micro-welding 査読

Satoshi Matsuoka, Yasuhiro Okamoto, Akira Okada

Procedia CIRP   6 ( 6 )   492 - 497   2013年

Investigation of Phenomenon in Removal Processing of TCO Film by ns Pulsed Fiber Laser 査読

Takehito Yokoyama, Yasuhiro Okamoto, Shin-ichi Nakashiba, Tomokazu Sakagawa, Akira Okada

Proceedings of 5th International Conference on Asian Society for Precision Engineering and Nanotechnology,   2013年

Novel Micro-welding of Silicon and Glass by Ultrashort Pulsed Laser 査読

Yasuhiro Okamoto, Isamu Miyamoto, Jorma Vihinen, Akira Okada

Proceedings of 8th International Conference on Processing and Manufacturing of Advanced Materials   2013年

Challenge to Development of Functional Multi-wire EDM Slicing Method 査読

Yasuhiro Okamoto, Atushi Kimura, Akira Okada, Jun Ohya and Toshiyuki Yamauchi

Key Engineering Materials   523-524   287 - 292   2012年11月

Study on Improvement in Surface Characteristics by Large-area EB Irraidation 査読

Akira Okada, Tomohiro Fujita, Kouki Kouyama and Yasuhiro Okamoto

Proceedings of the 15th International Machine Tool Engineers' Conference   66 - 67   2012年11月

Investigation on Micro-machining Characteristics and Phenomenon of Semiconductor Materials by Harmonics of Nd:YAG Laser 査読

Takayuki Hirano, Yasuhiro Okamoto, Akira Okada, Yoshiyuki Uno, Tomokazu Sakagawa and Shin-ichi Nakashiba

Key Engineering Materials   516   36 - 41   2012年6月

Optimization of Nozzle Flushing Method for Smooth Debris Exclusion in Wire EDM 査読

Takuya Fujimoto, Akira Okada, Yasuhiro Okamoto, Yoshiyuki Uno

Key Engineering Materials   516   73 - 78   2012年6月

Direct micro-joining of flexible printed circuit and metal electrode by pulsed Nd:YAG laser 査読

Mohd Idris Shah Ismail, Yasuhiro Okamoto, Akira Okada, Yoshiyuki Uno, Kentaro Ueoka

International Journal of Precision Engineering and Manufacturing   13 ( 3 )   321 - 329   2012年3月

Investigation on Micro-machining Characteristics and Phenomenon of Semiconductor Materials by Harmonics of Nd:YAG Laser 査読

Takayuki Hirano, Yasuhiro Okamoto, Akira Okada, Yoshiyuki Uno, Tomokazu Sakagawa, Shin-ichi Nakashiba

PROCEEDINGS OF PRECISION ENGINEERING AND NANOTECHNOLOGY (ASPEN2011)   516 ( 516 )   36 - +   2012年

Optimization of Nozzle Flushing Method for Smooth Debris Exclusion in Wire EDM 査読

Takuya Fujimoto, Akira Okada, Yasuhiro OKamoto, Yoshiyuki Uno

PROCEEDINGS OF PRECISION ENGINEERING AND NANOTECHNOLOGY (ASPEN2011)   516 ( 516 )   73 - +   2012年

Challenge to Development of Functional Multi-wire EDM Slicing Method using Wire Electrode with Track-shaped Section 査読

Yasuhiro Okamoto, Atsushi Kimura, Akira Okada, Yoshiyuki Uno, Jun Ohya, Toshiyuki Yamauchi

EMERGING TECHNOLOGY IN PRECISION ENGINEERING XIV   523-524 ( 523-524 )   287 - +   2012年

プラズマ窒化処理がステンレス刃物鋼の表面性状に及ぼす影響 査読

玉置,植村, 岡田,宇野

精密工学会誌   78 ( 1 )   72 - 76   2012年

Influence of Surrounding Gas Type and Pressure Condition on Micro-drilling Characteristics of Silicon Carbide by Harmonices of Nd:YAG Laser 査読

Yasuhiro Okamoto, Shin Urushibata, Akira Okada, Shin-ich Nakashiba Tomokazu Sakagawa

Proc. of 31st International Congress on Applications of Lasers & Electro-Optics 2012, pp.1269-1276   1269 - 1276   2012年

Velocity and Angle of Spatter in Fine Laser Processing 査読

Yasuhiro Okamoto, Hibiki Yamamoto, Akira Okada, Kento Shirasaya and Jari Tapanni Kolehmainen

Physics Procedia   39 ( 39 )   792 - 799   2012年

Evaluation of Damaged Region at the Groove Edge of TCO Filim in Pulsed Fiber Laser Processing 査読

Yasuhiro Okamoto, Naoya Tkahashi, Shin-ichi Nakashiba, Tomokazu Sakagawa, Akira Okada

Proc. of 31st International Congress on Applications of Lasers & Electro-Optics 2012, pp.860-865   860 - 865   2012年

Singulation of Sapphire Substrate with High Aspect Ration Internal Modification by Sub-nanosecond Pulsed Fiber Laser 査読

Yasuhiro Okamoto, Kenta Takahashi, Akira Okada

Proc. of 31st International Congress on Applications of Lasers & Electro-Optics 2012, pp.813-819   813 - 819   2012年

Effect of Plasma Nitriding on Cutting Performance of Stainless Steel Cutlery 査読

Tsukasa Tamaoki, Akira Okada, Kensuke Uemura, Yoshiyuki Uno

Proc. Of 12th International Conference of euspen, Vol.2, pp.266-270   2 ( 2 )   266 - 270   2012年

Micro-welding of Copper Plate by Frequency Doubled Diode Pumped Pulsed Nd:YAG Laser 査読

Shin-ichi Nakashiba, Yasuhiro Okamoto, Tomokazu Sakagawa, SunaoTakai and Akira Okada

Physics Procedia   39 ( 39 )   577 - 584   2012年

Novel Approach for Slicing of Silicon Carbide by Multi-wire EDM using Wire Electrode with Trackshaped Section 査読

Yasuhiro Okamoto, Atsushi Kimura, Akira Okada, Jun Ohya, Toshiyuki Yamauchi

Proceedings of American Society for Precision Engineering 2012 Annual Meeting, pp.331-334   331 - 334   2012年

High-performance Micro-welding of Aluminum Alloy by Combination of Pulsed Nd:YAG Laser And Continuous Diode Laser 査読

Yasuhiro Okamoto, Shinichi Nakashiba, Tomokazu Sakagawa, Akira Okada

Proceedings of Materials Science & Technology 2012 Conference, pp.332-339   332 - 339   2012年

Applicability of Reactive Ion Etching to Fabrication of Micro-Prism Array for Dioptrics System 査読

Ryuto Fujie, Akira Okada and Yoshiyuki Uno

Proceedings of 10th International Conference on Progress of Machining Technology   227 - +   2012年

High-speed Observation of Wire Movement in Fine Wire EDM 査読

Sho Ichii, Akira Okada and Yasuhiro Okamoto

Proceedings of 10th International Conference on Progress of Machining Technology   215 - 218   2012年

Surface Modification of Cemented Carbide with Nickel Binder by Large-Area Electron Beam 査読

Akira Okada, Shuhei Misumi and Yasuhiro Okamoto

Proceedings of 10th International Conference on Progress of Machining Technology   207 - 210   2012年

Thermal Deformation in Micro-welding of Thin Stainless Steel Sheet by Single-mode Fiber Laser 査読

Yasuhiro Okamoto, Satoshi Matsuoka, Mohd Idris Shah Ismail and Akira Okada

Proceedings of 10th International Conference on Progress of Machining Technology   199 - 202   2012年

Evaluation of Molten Zone in Micro-welding of Glass by Picosecond Pulsed Laser 査読

Yasuhiro Okamoto, Isamu Miyamoto, Kristian Cvecek, Akira Okada, Kenta Takahashi, Michael Schmidt

Proceedings of the 13th International Symposium on Laser Precision Microfabrication (LPM2012), On-line, #12-63   2012年

Effects of Wire Surface Roughness on Wire EDM Characteristics 査読

Akira OKADA Toshiyuki YAMAUCH, Masayuki HIGASHI, Masanori NAKAZAWA, Toshiaki SHIMIZU, Yoshiyuki UNO

International Journal of Electrical Machining   ( 16 )   1 - 7   2011年

Experimental Investigation on Micro-Welding of Thin Stainless Steel Sheet by Fiber Laser 査読

Mohd Idris Shah Ismail, Yasuhiro Okamoto, Akira Okada, Yoshiyuki Uno

American Journal of Engineering and Applied Sciences   4 ( 3 )   306 - 312   2011年

Surface modification of cemented carbide by EB polishing 査読

Akira Okada,Ryoji Kitada,Yasuhiro Okamoto,Yoshiyuki Uno

CIRP Annals - Manufacturing Technology   60 ( 1 )   575 - 578   2011年

ワイヤ放電加工用高性能ワイヤ電極の開発に関する研究（第４報）-ワイヤ表面の高抵抗層が放電加工特性に及ぼす影響− 査読

岡田 晃, 山内俊之, 中澤正典, 清水敏明, 宇野義幸

電気加工学会誌   45 ( 109 )   64 - 70   2011年

Welding Characteristics of Aluminum Alloy by Pulsed Nd:YAG Laser with Pre- and Post-irradiation of Superposed Continuous Diode Laser 査読

Shin-ichi Nakashiba, Yasuhiro Okamoto, Tomokazu Sakagawa, Kazuhiro Miura, Akira Okada, Yoshiyuki Uno, Kataoka Corpora

Proceedings of 28th International Congress on Applications of Lasers & Electro-Optics 2011, pp.825-832   825 - 832   2011年

Improvement of Razor Blade Surface Integrity by Plasma Nitriding 査読

Tsukasa Tamaoki, Kensuke Uemura, Akira Okada, Yoshiyuki Uno(Kai, ustries Co, Ltd, Nagata SeikiCo

Proceedings of International Conference on Leading Edge Manufacturing in 21st Centur, in CD-ROM   2011年

Influence of Carbon Fiber Direction on EDM Characteristics of CFRP 査読

Sho Ichii, Akira Okada, Yasuhiro Okamoto, Yoshiyuki Uno

Proceedings of International Conference on Leading Edge Manufacturing in 21st Centur, in CD-ROM   2011年

Clarification of Surface Layer Temperature in EB Polishing by Unsteady Heat Conduction Analysis 査読

Tomohiro Fujita, Akira Okada, Yasuhiro Okamoto, Yoshiyuki Uno

Proceedings of International Conference on Leading Edge Manufacturing in 21st Centur, in CD-ROM   2011年

High-quality Dicing of Semiconductor Package by Superposition of Pulsed Fiber Laser and SHG:YAG Laser 査読

Hibiki Yamamoto, Yasuhiro Okamoto, Muhamad Fahmi, bin Mohd Noor, Ryouji Kitada, Akira Okada

Proceedings of International Conference on Leading Edge Manufacturing in 21st Centur, in CD-ROM   2011年

Effects of Laser Wavelength and Intensity Distribution on Removal Characteristics of TCO Film 査読

Naoya Takahashi, Yasuhiro Okamoto, Shin-ichi Nakashiba, Tomokazu Sakagawa, Akira Okada, Yoshiyuki Uno, Kataoka Corpora

Proceedings of International Conference on Leading Edge Manufacturing in 21st Centur, in CD-ROM   2011年

Effect of Continuous Diode Laser on Crack Generation in Pulsed Nd:YAG Laser Welding of Aluminum Alloy 査読

Kazuya Miura, Yasuhiro Okamoto, Shin-ichi Nakashiba, Tomokazu Sakagawa, Akira Okada, Yoshiyuki Uno, Kataoka Corpora

Proceedings of International Conference on Leading Edge Manufacturing in 21st Century, in CD-ROM   2011年

Micro-welding of high thermal conductive material aluminum-graphite composite by pulsed Nd:YAG laser 査読

Mohd Idris Shah Ismail, Yasuhiro Okamoto, Akira Okada, Yoshiyuki Uno, Muhaizad Mukhtar

Proceedings of the 12th International Symposium on Laser Precision Microfabrication (LPM2011), On-line, #11-056   2011年

型彫り放電加工面の離型性に関する基礎的研究 -離型性に及ぼす要因の解明- 査読

北田良二, 日置裕彦, 岡田 晃, 宇野義幸

電気加工学会誌   44 ( 106 )   52 - 59   2010年

Evaluations of Spark Distribution and Wire Vibration in Wire EDM by High-speed Observation 査読

Akira OKADA, Yoshiyuki UNO, Masanori NAKAZAWA, Toshiyuki YAMAUCHI

CIRP Annals Manufacturing Technology   59 ( 1 )   231 - 234   2010年

大面積電子ビーム照射による超微粒子超硬合金の表面処理 査読

北田良二, 岡田 晃, 宇野義幸, 郭 洪閣

精密工学会誌   76 ( 12 )   1393 - 1397   2010年

CFD Analysis of Jet Flushing Effect on Debris Exclusion in Wire EDM 査読

Akira OKADA, Takuya FUJIMOTO, Yoshiyuki UNO

Proc. of the 21st International Conference on Computer-Aided Production Engineering, (CAPE2010) Paper No. 007, CD-Rom.   1   CDROM   2010年

Increase in Corrosion Resistance and Water Repellency of Metal Mold Surface by EB Polishing 査読

Akira OKADA, Yoshiyuki UNO, Kensuke UEMURA

Proc. of the 25th Annual Meeting of the American Society for Precision Engineering, 301-304   1   301 - 304   2010年

Unconventional Methods of Cutting of Bone and Tissue 査読

Hai Wang, Sameh Habib, Akira OKADA, Yoshiyuki UNO

Proc. of the 16th International Symposium on ElectroMachining   1   457 - 461   2010年

Surface Finishing of Cemented Carbide by Large-area EB Irradiation 査読

Hongge GUO, Ryoji KITADA, Akira OKADA, Yoshiyuki UNO

Proc. of the 16th International Symposium on ElectroMachining   1   451 - 454   2010年

EDM Characteristics of Carbon Fiber Reinforced Plastic 査読

Hai Wang, Sameh Habib, Akira OKADA, Yoshiyuki UNO

Proc. of the 16th International Symposium on ElectroMachining   1   65 - 68   2010年

ワイヤ放電加工用高性能ワイヤ電極の開発に関する研究（第３報）-ワイヤ表面の凹凸が放電加工特性に及ぼす影響− 査読

岡田 晃, 山内俊之, 東昌幸, 清水敏明, 宇野義幸

電気加工学会誌   43 ( 104 )   179 - 186   2009年

Study on Electrical Discharge Machining Characteristics of Electrically Conductive Ceramics 査読

Hai Wang, Akira Okada, Takafumi Uwano,Yoshiyuki Uno and Habib Sameh

Key Engineering Materials   407-408 ( 407-408 )   636 - +   2009年

Newly Developed CuW Electrode for High Performance EDM 査読

Akira OKADA, Shingo OUE, Yoshiyuki UNO, Takayuki SHOJI, Takahiro FUKUSHIMA, Osamu TERADA

International Journal of Electrical Machining   ( 14 )   23 - 28   2009年

大面積電子ビーム照射による手術器具用ステンレス鋼の高能率表面仕上げ 査読

岡田晃, 宇野義幸, 渡辺洋明, 藤原邦彦, 土居憲司

先端加工学会誌   27 ( 1 )   48 - 55   2009年

Computational Fluid Dynamics Analysis of Working Fluid Flow and Debris 査読

Akira OKADA, Yoshiyuki UNO, Shinya ONODA and Sameh HABIB

CIRP Annals Manufacturing Technology   58 ( 1 )   209 - 212   2009年

Surface Modification of Stainless Steel for Surgical Tool by EB-polishing 査読

Akira Okada, Yoshiyuki Uno, Hiroaki Watanabe,Kunihiko Fujiwara and Kenji Doi

Key Engineering Materials   407-408 ( 407-408 )   339 - +   2009年

Improvement of Surface Characteristics of Cemeted Carbide by Large-area Electron Beam Irradiation 査読

Ryoji KITADA, Akira OKADA, Yoshiyuki UNO

Proc. of the 3rd International Conference on ASPEN, 1P2-8   1P2-8   2009年

Investigation on Multi-wire EDM Slicing Method for Polycrystalline Silicon Ingot 査読

Hirokazu TAKAHASHI, Yasuhiro OKAMOTA, Yoshiyuki UNO, Akira OKADA, Yoshihiro ABE, Shiro TAKATA

Proc. of the 3rd International Conference on ASPEN, 1C15   1C15   2009年

Fundamental Study on Releasability of Resin from EDMed Surface 査読

Ryoji KITADA, Akira OKADA, Yoshiyuki UNO, Yu, YANG, Hirohiko HIOKI

Proc. of the 9th International conference of Euspen, Vol.1, pp.117-121.   1 ( 1 )   117 - 121   2009年

Evaluation of Spark Location Distribution in Wire EDM by High-speed Observation 査読

Masanori NAKAZAWA, Akira OKADA, Toshiyuki YAMAUCHI, Yoshiyuki UNO

Proc. of the 5th International Conference on Leading Edge Manufacturing in 21st Century, pp.841-844.   841 - 844   2009年

Study on Separation Force of Molded Resin from EDMed Surface 査読

Hirohiko HIOKI, Ryoji KITADA, Akira OKADA, Yoshiyuki UNO

Proc. of the 5th International Conference on Leading Edge Manufacturing in 21st Century, pp.815-818.   815 - 818   2009年

Improvement of Surface Characteristics of Metal Mold by EB polishing 査読

Haruhisa BAMBA, Akira OKADA, Yoshiyuki UNO, Yuji KANEKO, Itaru MATSUMOTO

Proc. of the 5th International Conference on Leading Edge Manufacturing in 21st Century, pp.801-804.   801 - 804   2009年

Addition of Surface Functions to Orthopedic Surgical Tools and Jigsby Large-area Electron Beam Irradiation 査読

Hiroaki WATANABE, Akira OKADA, Yoshiyuki UNO, Kunihiko FUJIWARA, Kenji DOI

Proc. of the 5th International Conference on Leading Edge Manufacturing in 21st Century, pp.797-800.   797 - 800   2009年

New Surface Modification Method of Bio-titanium Alloy by EB Polishing 査読

*Akira OKADA, Yoshiyuki UNO, Atsuo IIO, Kunihiko FUJIWARA, Kenji DOI

Journal of Advanced Mechanical Design System and Manufacturing   2 ( 4 )   694 - 700   2008年

Effect of Surface Quality of Brass Coating Wire on Wire EDM Characteristics 査読

*Akira OKADA, Toshiyuki YAMAUCHI, Kimihiko ARIZONO, Yoshiyuki UNO

Journal of Advanced Mechanical Design System and Manufacturing   2 ( 4 )   735 - 741   2008年

段付き電極による深穴放電加工特性の向上 査読

岡田 晃, 安田竜一, 宇野義幸

電気加工学会誌   42 ( 101 )   122 - 129   2008年

ワイヤ放電加工用高性能ワイヤ電極の開発に関する研究（第２報） 査読

岡田 晃, 山内俊之, 有園公彦, 清水敏明, 宇野義幸

電気加工学会誌   42 ( 99 )   12 - 19   2008年

大面積電子ビームによる金型加工面の高能率仕上げに関する研究（第３報） 査読

岡田 晃, 虞 戦波, 近藤 温, 宇野義幸, 佐野定男, 植村賢介

精密工学会誌   74 ( 4 )   385 - 389   2008年

Surface finishing of stainless steels for orthopedic surgical tools by large-area electron beam irradiation 査読

A. Okada, Y. Uno, J. A. McGeough, K. Fujiwara, K. Doi, K. Uemura, S. Sano

CIRP ANNALS-MANUFACTURING TECHNOLOGY   57 ( 1 )   223 - 226   2008年

Effect of Electrostatic Cleaning of Dielectric Working Fluid on Electrical Discharge Machining Characteristics 査読

Akira OKADA, Yoshiyuki UNO, Hironori KIMURA, Seiji IWASAKI

Proc. of 10th International conference of Euspen, pp.222-225.   222 - 225   2008年

Development of Multi-wire EDM Slicing Mehod for Silicon Ingot 査読

Y.Okamoto, Y.Uno, A.Okada, S.Ohshita, T.Hirano, S.Takata

Proc.of the 23th American Society for Precision Engineering Annual Meeting, pp530-533.   530 - 533   2008年

A new polishing method of metal mold with large-area electron beam irradiation 査読

Y. Uno, A. Okada, K. Uemura, P. Raharjo, S. Sano, Z. Yu, S. Mishima

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY   187 ( 187-188 )   77 - 80   2007年6月

放電加工用高性能銅タングステン電極の開発 査読

岡田 晃, 大上真吾, 宇野義幸, 庄司隆行, 福島崇洋, 寺田修

電気加工学会誌   41 ( 97 )   69 - 76   2007年

Surface Finishing of SKD 11 Tool Steel via Plasma-based Electron Beam Irradiation 査読

Yoshiaki Daichi, Sadao Sano, Yoshiyuki Uno, Akira Okada

Journal of Key Engineering Materials   364 ( 364-366 )   302 - 307   2007年

Multi-wire Slicing Method for Silicon Ingot with Electrical Discharge Machining 査読

Satoru OHSHITA, Yoshiyuki UNO, Akira OKADA, Yasuhiro OKAMOTO, Tameyoshi HIRANO, Shiro TAKATA

Proc. of Asian Electrical Machining Symposium '07, E21, pp.126-129   126 - 129   2007年

Advantage of Flange Type Electrode in Deep-Hole EDM 査読

Ryuichi YASUDA, Akira OKADA, Yoshiyuki UNO

Proc. of the 4th International Conference on Leading Edge Manufacturing in 21st Century, pp.529-532   529 - 532   2007年

RF Cutting of Non and Semiconducting Materials 査読

D.M.Macmillan, B.W. Flynn, J. McGeough, A. Okada

CIRP Annuals 2007 - Manufacturing Technology, 56/2   2007年

Unconventional Method of Cutting for Orthopaedic Surgery 査読

Joseph McGeough, Akira OKADA

Keynote adress The 20th International Conference on Computer-Aided Production Engineering, 167-171.   167 - 171   2007年

Radio Frequency Electrodischarge Machining of Silicon Wafers 査読

David McMillan, Joseph McGeough, Brian Flynn, Akira Okada

The 20th International Conference on Computer-Aided Production Engineering, 167-171.   167 - 171   2007年

High Efficiency EB Polishing of Metal Mold 査読

*Akira OKADA, Yoshiyuki UNO, Yoshiaki DAICHI and Sadao SANO

Proc. of the 15th International Symposium on ElectroMachining, pp.409-414   409 - 414   2007年

Effect of Surface Quality of Brass Coating Wire on Wire EDM Characteristics 査読

Kimihiko ARIZONO, Toshiyuki YAMAUCHI, Akira OKADA, Yoshiyuki UNO

Proceedings of the 4th International Conference on Leading Edge Manufacturing in 21st Century, pp.533-536   533 - 536   2007年

Surface Modification for Orthopaedic Titanium Alloy by Wide-area Electron Beam 査読

*Akira OKADA, Yoshiyuki UNO, Kensuke UEMURA, Purwadi RAHARJO and Joseph A. McGEOUGH

IMechE Journal of Engineering Manufacture   221 ( 2 )   173 - 178   2007年

New Surface Modification Method of Bio-titanium Alloy by EB Polishing 査読

Atsuo IIO, Akira OKADA, Yoshiyuki UNO, Kunihiko FUJIWARA, Kenji DOI

Proceedings of the 4th International Conference on Leading Edge Manufacturing in 21st Century, pp.557-560   557 - 560   2007年

放電加工面の耐食性に関する基礎的研究 査読

岡田 晃, 田中 智, 三田耕司, 宇野義幸

電気加工学会誌   40 ( 94 )   66 - 73   2006年