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Updated: Jun 15, 2025

Fragility Assessment of Bovine Cortical Bone Using Scratch Tests
Published on: November 30, 2017
Microcrack behavior in bone: Stress field analysis at osteon cement line tips
Chunhui Ji1, Xiuyan Yang1, Liang Zhang1
1Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin University, Tianjin, China.
Abstract:
Bone microstructure governs microcrack propagation complexity. Current research, relying on linear elastic fracture mechanics, inadequately considers authentic multi-level structures, like cement lines and osteons, impacting stress intensity at cracks. This study, by constructing models encompassing single or multiple osteons, delves into the influence of factors like crack length, osteon radius, and modulus ratio on the stress intensity factor at the crack tip. Employing a fracture mechanics phase-field approach to simulate crack propagation paths, it particularly explores the role of cement lines as weak interfaces in crack extension. The aim is to comprehensively and systematically elucidate the critical factors of bone microstructure in the context of crack propagation.
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