Ammarullah Muhammad Imam, Hartono Rachmad, Supriyono Toto, Santoso Gatot, Sugiharto S, Permana Muki Satya
Department of Mechanical Engineering, Faculty of Engineering, Universitas Pasundan, Bandung 40153, West Java, Indonesia.
Biomechanics and Biomedics Engineering Research Centre, Universitas Pasundan, Bandung 40153, West Java, Indonesia.
Biomedicines. 2023 Mar 20;11(3):951. doi: 10.3390/biomedicines11030951.
Due to polymeric wear debris causing osteolysis from polymer, metal ions causing metallosis from metal, and brittle characteristic causing fracture failure from ceramic in the application on bearing of total hip prosthesis requires the availability of new material options as a solution to these problems. Polycrystalline diamond (PCD) has the potential to become the selected material for hard-on-hard bearing in view of its advantages in terms of mechanical properties and biocompatibility. The present study contributes to confirming the potential of PCD to replace metals and ceramics for hard-on-hard bearing through von Mises stress investigations. A computational simulation using a 2D axisymmetric finite element model of hard-on-hard bearing under gait loading has been performed. The percentage of maximum von Mises stress to respective yield strength from PCD-on-PCD is the lowest at 2.47%, with CoCrMo (cobalt chromium molybdenum)-on-CoCrMo at 10.79%, and AlO (aluminium oxide)-on-AlO at 13.49%. This confirms that the use of PCD as a hard-on-hard bearing material is the safest option compared to the investigated metal and ceramic hard-on-hard bearings from the mechanical perspective.
由于在全髋关节假体轴承应用中，聚合物磨损碎屑会导致聚合物引起的骨溶解，金属离子会导致金属引起的金属中毒，以及陶瓷的脆性特征会导致断裂失效，因此需要有新的材料选择来解决这些问题。鉴于多晶金刚石（PCD）在机械性能和生物相容性方面的优势，它有潜力成为硬对硬轴承的选定材料。本研究通过冯·米塞斯应力研究，有助于证实PCD替代金属和陶瓷用于硬对硬轴承的潜力。已使用二维轴对称有限元模型对步态加载下的硬对硬轴承进行了计算模拟。PCD对PCD的最大冯·米塞斯应力与各自屈服强度的百分比最低，为2.47%，钴铬钼（CoCrMo）对CoCrMo为10.79%，氧化铝（AlO）对AlO为13.49%。这证实，从机械角度来看，与所研究的金属和陶瓷硬对硬轴承相比，使用PCD作为硬对硬轴承材料是最安全的选择。
