Fatigue crack propagation modes: plastic deformation mode and damage accumulation mode

Shigeru Hamada, Kejin Zhang, Motomichi Koyama, Masaharu Ueda, Hiroshi Noguchi

研究成果: ジャーナルへの寄稿記事

抜粋

To define the fatigue crack propagation mode for the prediction and classification of the experimental results based on its evolution mechanism, successive mesoscopic observations of a fatigue process under pure cyclic mode II loading are performed. Thus, damage accumulation, which is considered to be a vacancy accumulation, is found to be a mechanism. The phenomena occur not at the crack tip but ahead of it. Thus, “plastic deformation mode” and “damage accumulation mode” are the terms proposed to represent the fatigue crack propagation modes instead of “tensile mode” and “shear mode,” respectively. Moreover, as a method to classify both the fatigue crack propagation modes using the experimental results, it is proposed to identify the plastic strain in the wake of the crack tip.

元の言語英語
ページ(範囲)111-122
ページ数12
ジャーナルInternational Journal of Fracture
222
発行部数1-2
DOI
出版物ステータス出版済み - 3 1 2020

    フィンガープリント

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

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