103 破断面のフラクタル性と破壊モード

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タイトル別名
  • Fractality on the Fracture Surface and Fracture Mode

説明

The fracture modes, i.e., brittle fracture and ductile fracture are studied comparing the criteria in macroscopic and microscopic aspects. In this study, as the macroscopic criterion, the stress triaxiality and the critical stress intensity factor are used. As the microscopic criterion, the idea of fractal is applied to the fracture surfaces. The tensile fracture tests and the three points bending tests were carried out using S35C, S55C and FC200. Fractal dimension are calculated based on the method of box-counting and hight-hight correlation. The relationship between the fracture modes and the fractal dimension of the fracture surfaces is discussed.

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