Faculty Profiles - TADA Naoya

Papers - TADA Naoya

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Crystal plastic homogenization finite element analysis of Ti-6242 alloy subjected to in-plane reverse loading Reviewed

Takeshi UEMORI, Naoya TADA, Junji SAKAMOTO

Bulletin of the JSME, Mechanical Engineering Journal 12 ( 2 ) 24-00340 2025.4

Effect of artificial defect on tensile properties of thin titanium alloy wire Reviewed

Junji SAKAMOTO, Naoya TADA, Takeshi UEMORI, Koyo OISHI

Bulletin of the JSME, Mechanical Engineering Journal 11 ( 6 ) 24-00129 2024.12

Crystal Grain Rotation during Tensile Test of Polycrystalline Pure Titanium Thin Sheet Based on Surface Height and Crystal Orientation Reviewed

Naoya Tada, Hiroaki Ohashi, Takeshi Uemori, Junji Sakamoto

Journal of Physics: Conference Series 2892 012002 2024.11

Elasticity-based prediction of inhomogeneous deformation of polycrystalline metals Invited

Naoya TADA

Extended abstract of Asia-Pacific Conference on Fracture and Strength 2024 (APCFS 2024) P001 2024.11

Creep Fracture and Damage Evaluation Based on the Distribution of Cavies on Grain Boundaries Invited Reviewed

Naoya Tada

Abstract book of 2024 International Symposium on Structural Integrity (ISSI 2024) 178 2024.11

Method for Predicting Crack Size Using Amplitude Change in Titanium Alloy under Bending Vibration Reviewed

J. Sakamoto, N. Tada, T. Uemori

Book of Abstracts: Europian Conference on Fracture 2024 (ECF24) 472 2024.9

Fracture Morphology of Ti-6Al-4V Thin Wire under Load-controlled Fatigue Test Reviewed

Junnji SAKAMOTO, Naoya TADA, Takeshi UEMORI

Titanium Japan 72 ( 3 ) 39 - 43 2024.7

Relationship between cyclic tensile properties of cellulose nanofiber reinforced natural rubber and volume fraction of bound rubber obtained from swelling tests Reviewed

Kento OKUI, Naoya TADA, Takeshi UEMORI, Junji SAKAMOTO, Keita SAKAKIBARA

Transactions of the JSME 90 ( 932 ) 24-00008 2024.4

Vibration change and crack propagation under bending vibration of aluminum alloy Reviewed

SAKAMOTO Junji, TADA Naoya, UEMORI Takeshi

Transactions of the JSME (in Japanese) 90 ( 930 ) 23-00246 2024.2

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society of Mechanical Engineers

In this study, aluminum alloy specimens were subjected to bending vibrations at different vibration frequencies near the first resonance frequency in order to investigate the vibration changes associated with crack propagation. Bending displacement, crack length, and strains at several parts of the specimen were measured during the bending vibration tests. As a result, it was confirmed that when the vibration frequency was lower than the initial first resonance frequency, the vibration amplitude increased with the crack length, and when the vibration frequency was higher than the initial first resonance frequency, the vibration amplitude decreased with an increase in the crack length. This is due to the decrease in the first resonance frequency due to the material damage. The relationship between the change of bending displacement amplitude and the crack length during vibration of the specimens can be organized using the slope (dΔε_x2/df_v) of the relationship between the strain range and the vibration frequency for the undamaged specimen. This might be due to the strong correlation between the decrease in the first resonance frequency and the crack size when the crack initiation location is limited in the material. Moreover, based on the relationship between the change of bending displacement amplitude and the crack length, the stress intensity factor range (ΔK) was estimated by incorporating the load change into the crack length. By using the modified ΔK, the crack growth rate during bending vibration could be predicted.

DOI： 10.1299/transjsme.23-00246

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Finite Element Simulation of Resistance Spot Welding of Aluminized Hot-Stamped Steel Sheets Reviewed

Manabu Fukumoto, Naoya Tada

Transactions of Society of Automotive Engineers of Japan 55 ( 1 ) 107 - 112 2024.1

Prediction of slip activity of crystal grains around semi-circular and semi-elliptical notches in thin-sheet specimens of pure titanium using formulated macroscopic stress distribution and crystal orientation Reviewed

Naoya Tada, Takeshi Uemori, Junji Sakamoto

Engineering Failure Analysis 153 107623 2023.11

A Mathematical Model of Shunting in Resistance Spot Welding Reviewed

Manabu FUKUMOTO, Naoya TADA

Quarterly Journal of the Japan Welding Society 41 ( 4 ) 302 - 310 2023.11

Prediction of active slip system for commercially pure titanium sheet by crystal plasticity finite element analysis Reviewed

Takeshi UEMORI, Naoya TADA, Junji SAKAMOTO, Masatoshi DOI

Extended abstract of The Advanced Technology in Experimental Mechanics and International DIC Society Joint Conference 2023 (ATEM-iDICs '23) 19-G05 2023.10

Microscopic Inhomogeneous Deformation of Polycrystalline Metals in Elastic and Plastic Regions Reviewed

Naoya Tada

Abstract of Materials Today Conference 2023 O4C.1 2023.8

Effect of Surface Roughness and Oxidation Treatment on Joint Strength between Aluminum Alloy and High-Density Polyethylene Reviewed

N. Tada, T. Uemori, J. Sakamoto

Extended Abstracts of 17th International Conference on Advances in Experimental Mechanics 2023.8

Tensile properties and slip deformation behavior of pure titanium thin wire with a small diameter-to-grain-size ratio Reviewed

Junji Sakamoto, Naoya Tada, Takeshi Uemori

Materials Science and Engineering A 863 144532 2023.1

Slip Activity of Crystal Grains around Notch in Thin Sheet Specimen of Pure Titanium Invited Reviewed

Naoya Tada, Takeshi Uemori, Junji Sakamoto

19 - 19 2022.12

Application of Complex-Step Derivative Approximation Method to Crystal Plasticity Analysis of Commercially Pure Titanium Sheet Reviewed

Takeshi UEMORI, Naoya TADA, Junji SAKAMOTO

Titanium Japan 70 ( 2 ) 158 - 163 2022.4

Effect of Mechanical Surface Treatment and Post-treatment Polishing on Tensile Strength and Fatigue Life of High-speed Tool Steel Reviewed

N.Karunathilaka, N.Tada, T.Uemori, J.Sakamoto, R.Hanamitsu, M.Fujii, Y.Omiya, M.Kawano

International Journal of Peening Science and Technology 2 ( 1 ) 35 - 60 2022

Effect of resin lamination on tensile strength characteristics of SUS304 stainless steel thin film Reviewed

Junji Sakamoto, Naoya Tada, Takeshi Uemori

The International Journal of Advanced Manufacturing Technology 116 ( 3-4 ) 1081 - 1088 2021.9

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