期刊
ENGINEERING FRACTURE MECHANICS
卷 174, 期 -, 页码 44-53出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2016.11.002
关键词
Fracture toughness; Cortical bone; Quasi-brittle material; Two-Parameter Model
类别
资金
- Italian Ministry of Education, University and Research (MIUR)
The analysis of the bone fracture behaviour is fundamental for prevention, diagnosis and treatment of traumas. In the present paper, an experimental campaign on fracture behaviour of bovine femoral cortical bones is conducted to characterise the fracture toughness, K-IC(S), which is related to the structure and load-bearing capacity of bones. Firstly, K-IC(S) is evaluated through a two-parameter model originally proposed for quasi-brittle materials. To take into account the crack deflection (kinked crack) due to osteons orientation, the two-parameter model is modified by applying the Castigliano theorem. Fracture toughness results here obtained are compared with those related to a femur of an 18-month-old bovine, available in the literature. (C) 2016 Elsevier Ltd. All rights reserved.
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