A Study Of Anisotropic Dependent Toughening Mechanisms Of Cortical Bone Under Monotonic Loading

Shahrin, Siti Asiah Ismam (2021) A Study Of Anisotropic Dependent Toughening Mechanisms Of Cortical Bone Under Monotonic Loading. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Mekanik. (Submitted)

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The fracture resistance of human cortical bone is adversely influenced by diseases such as osteoporosis that are age-related. Aging bones are prone to be porous in return making them easily exposed to bone fracture occurrence. Cortical bone toughening mechanisms are known to be dependent on its microstructure that is affected by cortical porosity considering void volumes within the cortical bone volume. There are abundant published works of literature that measure the relation between cortical bone and fracture toughness under Mode I loading via experimental procedures, however, simulation is, apparently on the contrary. The aim of this study is to investigate the relationship between the cortical bone microstructural properties and stress intensity factor, KI as the quantitative measure of bone fracture toughness. To address the subject mentioned, the bone is modelled as a compact tension (CT) specimen with crack size variations as also to investigate the toughness properties of the cortical bone concerning the crack size. Moreover, the motion of crack growth along its trajectory is also explored in highlighting the crack propagation in response to different cortical bone microstructures. The finite element analysis shows that the stress intensity factor increases as the number of microstructures and the crack size increase, besides, the presence of microstructure also does influence crack deflection as a matter of enhancing the cortical bone’s toughening mechanism, which is consistent with that reported in published literature.

Item Type: Monograph (Project Report)
Subjects: T Technology
T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery
Divisions: Kampus Kejuruteraan (Engineering Campus) > Pusat Pengajian Kejuruteraan Mekanikal (School of Mechanical Engineering) > Monograph
Depositing User: Mr Mohamed Yunus Mat Yusof
Date Deposited: 16 Dec 2022 08:45
Last Modified: 16 Dec 2022 08:45
URI: http://eprints.usm.my/id/eprint/56031

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