Design and fabrication of epoxy-based hip implant
by Ranjit Singh; Manoj Narwariya; Avadesh K. Sharma; P.S. Chauhan; Rajeev Singh
International Journal of Materials Engineering Innovation (IJMATEI), Vol. 13, No. 4, 2022

Abstract: Generally, hip implants are fabricated by metals and ceramics due to their excellent mechanical strength. However, the body fluid causes severe corrosion of these materials, deteriorating the implant's structural integrity and mechanical strength. The present work is intended to design and fabricate the epoxy-based hip implant with enhanced physical and mechanical characteristics. The epoxy-based hip implant was designed using manual calculations and modelling software. The analysis shows that the maximum stress acting on the neck of the hip implant is 27.18 MPa which was lower than the yield strength of epoxy resin (107.52 MPa). It was observed that the stresses are concentrated on the neck of the implant. Further, we poured epoxy into a 3D printed PLA mould to manufacture the epoxy-based hip implant. The hip implant was tested experimentally using polariscope and a universal testing machine. The polariscope results reveal similar stress behaviour to the simulated results obtained by modelling software. The maximum stress of 5.22 MPa was applied to the neck of the implant. The compression test shows that the fabricated hip implant has mechanical characteristics similar to a human bone, making it suitable for implant application.

Online publication date: Thu, 27-Oct-2022

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