Mehboob, Hassan and Tarlochan, Faris and Mehboob, Ali and Chang, Seung-Hwan and Ramesh, S. and Harun, Wan Sharuzi Wan and Kadirgama, Kumaran (2020) A novel design, analysis and 3D printing of Ti-6Al-4V alloy bio-inspired porous femoral stem. Journal of Materials Science-Materials in Medicine, 31 (9). ISSN 0957-4530, DOI https://doi.org/10.1007/s10856-020-06420-7.
Full text not available from this repository.Abstract
The current study is proposing a design envelope for porous Ti-6Al-4V alloy femoral stems to survive under fatigue loads. Numerical computational analysis of these stems with a body-centered-cube (BCC) structure is conducted in ABAQUS. Femoral stems without shell and with various outer dense shell thicknesses (0.5, 1.0, 1.5, and 2 mm) and inner cores (porosities of 90, 77, 63, 47, 30, and 18%) are analyzed. A design space (envelope) is derived by using stem stiffnesses close to that of the femur bone, maximum fatigue stresses of 0.3 sigma(ys)in the porous part, and endurance limits of the dense part of the stems. The Soderberg approach is successfully employed to compute the factor of safetyN(f)> 1.1. Fully porous stems without dense shells are concluded to fail under fatigue load. It is thus safe to use the porous stems with a shell thickness of 1.5 and 2 mm for all porosities (18-90%), 1 mm shell with 18 and 30% porosities, and 0.5 mm shell with 18% porosity. The reduction in stress shielding was achieved by 28%. Porous stems incorporated BCC structures with dense shells and beads were successfully printed.
| Item Type: | Article |
|---|---|
| Funders: | Qatar Foundation (QF), Qatar National Research Fund (QNRF) [Grant No: NPRP 8-876-2-375], National Research Foundation of Korea [Grant No: 22A20152813260] |
| Uncontrolled Keywords: | Engineering, BiomedicalMaterials Science, Biomaterials |
| Subjects: | Q Science > Q Science (General) T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering > Department of Mechanical Engineering |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 24 Nov 2024 13:36 |
| Last Modified: | 24 Nov 2024 13:36 |
| URI: | http://eprints.um.edu.my/id/eprint/36481 |
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