Fatigue of Metals by Repeated Finite Strain

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  • 有限ひずみ振幅による金属の疲れ
  • ユウゲンヒズミ シンプク ニ ヨル キンゾク ノ ツカレ

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Abstract

It is generally recognized that the plastic deformation always precedes the fatigue failure and the plastic region in the matrix palys an important role in the nucleation and propagation of fatigue cracks. The mechanisms of fatigue phenomenon, therefore, might be clarified by obtaining some correct information concerning the behaviors of the plastic region. From this standpoint, the experiments of fatigue failure of both the mild steel and the brass tubes under repeated finite strain and some other relevant experiments were performed. By these experiments several interesting phenomena and some relations among the factors concerning the fatigue phenomenon have been found.

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