Effects of Initial Crack Length and Specimen Thickness on Fracture Toughness of Compact Bone

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概要

• 論文の詳細を見る

• This paper deals with the determination of fracture mechanics parameters, such as critical stress intensity factor, K_c, and critical strain energy release rate, G_c, of compact bone. Haversian bone samples taken from fresh bovine femurs were machined into small compact tension (CT) specimens with various initial crack lengths and thicknesses, and then tested under quasi-static mode I loading condition at room temperature. Factor K_c was determined following the ASTM standard E399-90, and the compliance method was used for the determination of G_c. The values of K_c and G_c were larger in the specimens with transversely oriented initial cracks than in those with longitudinally oriented initial cracks. Both K_c and G_c were dependent on initial crack length as well as specimen thickness, and these fracture characteristics could be interpreted by a hypothesis based on the observation of damage accumulation, or microcracking ahead of the main crack front.

• 一般社団法人日本機械学会の論文
• 1999-09-15

著者

• Bonfield William

  Interdisciplinary Research Centre In Biomedical Materials Queen Mary And Westfield College Universit

• TANABE Yuji

  Faculty of Engineering, Tohoku University

• Tanabe Yuji

  Faculty Of Engineering Niigata University

関連論文

• Growth of Crack in Steel by Impact Tension
• Effects of Initial Crack Length and Specimen Thickness on Fracture Toughness of Compact Bone

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