OS1103 ナノスケールの応力特異場を有するき裂の伝ぱ基準

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タイトル別名
  • OS1103 Criterion of Crack Propagation Induced by Nanoscale Singular Stress Field

抄録

In order to investigate the mechanical factors dominating crack propagation induced by nano-meter-scale singular stress field, crack propagation experiments are carried out using silicon (Si) single crystal specimens, which possess precracks with nano-meter-scale singular stress field. The minimum size of singular stress field among specimens is 65 nm. Critical value of stress intensity factor at fracture, K_<IC>, is evaluated to be 1.05〜1.30 MPa・m^<1/2>. The result indicates that the fracture mechanics concept based on continuum mechanics is still valid.

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