研究者詳細 - 岡田　晃

論文 - 岡田　晃

分割表示 396 件中 341 - 360 件目／全件表示 >>

Biomachining of Metal Using Agar Culture Medium 査読

Journal of the Japan Society of Advanced Production Technology 23 ( 1 ) 13 - 18 2005年

Unconventional Cutting Technologies in Orthopaedic Surgery 査読

Joseph A. McGEOUGH, *Akira OKADA

Proceedings of 7th International Conference on Advanced Manufacturing Systems and Technology Processing ( 486 ) 87 - 97 2005年

Fundamental Study on Radiofrequency Machining of Metals 査読

Akira OKADA, Joseph, A. McGEOUGH, David MacMILLAN, dinburgh University

Proceedings of the 19th International Conference on Computer Aided Production Engineering, (CD-ROM) 2005年

Fundamental Study on Multi-wire EDM Slicing Method for Monocrystalline Silicon Ingot-Effects of Supply Method of Working Fluid and Wire Speed on Machining Characteristics- 査読

Yoshiyuki UNO, Akira OKADA, Yasuhiro OKAMOTO, Katsutomo Suzuki, Satoshi HIROTA, Tameyoshi HIRANO, Shiro TAKATA, Kzuhiko ISHIKAWA

Proceedings of the 3rd International Conference on Leading Edge Manufacturing in 21st Century, pp.783-786 783 - 786 2005年

Fundamental Study on Coating Wire Electrode for High Performance WEDM 査読

Masato. MORITA, Toshiyuki. YAMAUCHI, Akira. OKADA, Yoshiyuki. UNO, Toshiaki. SHIMIZU

Proceedings of the 3rd International Conference on Leading Edge Manufacturing in 21st Century, pp.779-782 779 - 782 2005年

A New Surface Modification Method of Metal Moldby Large-area Electron Beam Irradiation 査読

Akira OKADA, Yoshiyuki UNO, Keita NISHINA, Kensuke UEMURA, Purwadi?RAHARJO, Sadao SANO, Yu ZHANBO

Proceedings of the 3rd International Conference on Leading Edge Manufacturing in 21st Century, pp.739-744 739 - 744 2005年

寒天培地を利用した金属のバイオマシニング査読

*岡田晃,宇野義幸,中西隆,金枝敏明

先端加工学会誌 23 ( 1 ) 13 - 18 2005年

Effect of debris distribution on wall concavity in deep-hole EDM 査読

S Cetin, A Okada, Y Uno

JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING 47 ( 2 ) 553 - 559 2004年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：JAPAN SOC MECHANICAL ENGINEERS

In deep-hole electrical discharge machining, the electrode jump height and hence the movement of the machining debris inside the side gap affect the wall concavity of the machined holes. In this study, the dielectric fluid flow and the debris distribution in the machining gap caused by electrode jump is analyzed to understand the wall concavity phenomenon of the holes using a computational fluid dynamics (CFD) simulation program. Fluid flow and debris-fluid interaction under low and high electrode jumps are examined and compared. The accuracy of the predictions obtained by the numerical calculation is assessed through comparisons with experimental data.

DOI： 10.1299/jsmec.47.553

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High efficient surface finishing of bio-titanium alloy by large-area electron beam irradiation 査読

A Okada, Y Uno, N Yabushita, K Uemura, P Raharjo

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 149 ( 1-3 ) 506 - 511 2004年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE SA

A new surface finishing process for bio-titanium alloy products by large-area electron beam (LAEB) irradiation is proposed. In the LAEB irradiation equipment, high energy density EB can be irradiated without concentrating the beam. Therefore, LAEB with a maximum diameter of 60 mm can be used for instantaneous melting or evaporating metal surface. Experimental results made it clear that the surface roughness becomes smaller with increasing energy density of beam. Under a proper irradiating condition, the surface roughness of titanium alloy machined with end mill decreases from 10 to 0.8 mum R-z in a few minutes. Moreover, the corrosion resistance can be greatly improved. (C) 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.jmatprotec.2004.02.017

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大面積パルス電子ビーム照射によるチタン合金製生体部品の高能率表面仕上げ査読

岡田晃, 宇野義幸, 佐藤公亮, 八野田健, 植村賢介

電気加工学会誌 38 ( 89 ) 27 - 34 2004年

Effect of Debris Accumulation on Machining Speed in EDM 査読

Serkan CETIN,*Akira OKADA, Yoshiyuki UNO

International Journal of Electrical Machining ( 9 ) 9 - 14 2004年

Electrode jump motion in linear motor equipped die-sinking EDM 査読

S Cetin, A Okada, Y Uno

JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME 125 ( 4 ) 809 - 815 2003年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ASME-AMER SOC MECHANICAL ENG

The effects of electrode jump parameters on machining speed and depth were experimentally investigated in linear motor equipped electrical discharge machining. A new definition named "Machining speed breakpoint" is introduced, theoretically calculated from a proposed electrode jump and debris exclusion model, and compared with the experimental results. Additionally, an algorithm is developed to calculate the accumulation of debris in machining gap. The algorithm showed that the debris concentration in gap rises suddenly before the machining speed break point.

DOI： 10.1115/1.1615793

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「文鎮」から「ジャイロスコープ」へ進化した「機械工作実習」査読

宇野義幸, 岡田晃, 岡本康寛

工学教育 51 ( 5 ) 58 - 61 2003年