FRACTURE MECHANICS APPROACH TO FRACTURE BEHAVIOR OF CENTER CRACKED SHEET SPECIMENS OF 2024-T3 ALUMINUM ALLOY UNDER MODE II LOADING

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概要

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• Initiation of stable crack growth under Mode II loading in center cracked specimens of 2024-T3 aluminum alloy is investigated using the apparatus devised previously by the authors. This apparatus makes it possible to conduct Mode II testing on a specimen which has the same geometry as that for Mode I testing. It is shown that the stress intensity factor at initiation of stable crack growth, (K_i)n, is constant irrespective of the specimen width for W≧ and decreases as W decreases for W<Wo, where Wo is a certain specimen width. This tendency is quite similar to our previous results about Mode I loading. Finite element analysis is carried out in order to examine if J-integral is applicable. It is shown that the specimen width dependence of (K_i)n is well explained by (J_i)m=constant criterion. This result is similar to Kitagawa and others' analysis for Mode I loading.

• 一般社団法人日本機械学会の論文

著者

• Takamatsu Tohru

  Dept. Of Mechanical Engineering Univ. Of Electro-communications

• Ichikawa Masahiro

  Dept. Of Mechanical Engineering Ii Univ. Of Electro-communications

関連論文

• FRACTURE MECHANICS APPROACH TO FRACTURE BEHAVIOR OF CENTER CRACKED SHEET SPECIMENS OF 2024-T3 ALUMINUM ALLOY UNDER MODE II LOADING

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