Experimental and numerical research of mechanical behaviour of titanium alloy hip implant

Čolić, Katarina; Sedmak, Aleksandar; Legweel, Kaled; Мilošević, Мiloš; Mitrović, Nenad; Mišković, Zoran; Hloch, Sergej

doi:10.17559/tv-20160219132016

Cited by 8 publications

(2 citation statements)

References 6 publications

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“…non-lubrication (dry) condition [29]. Furthermore, some of the prominent work on hip prosthesis using finite element analysis is described in [68][69][70][71][72][73][74]79] In the present work, hip implant assembly with 28 mm diameter femoral head with three different materials and liner with two different materials have been considered with a variety of stem and cup materials. The boundary condition is taken as per the ISO standard with dry and wet conditions.…”

Section: Introductionmentioning

confidence: 99%

Dry and Wet Lubrication Analysis for Multi-Material Hip Assembly

Ravikant

Mittal

Gupta³

2022

Int. J. Automot. Mech. Eng.

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Hip joint repair/replacement is one of the most thriving orthopedic surgical procedures in the human body. The group of patients undergoing hip replacement considerably includes young and physically active persons with varying movements thus requiring longer product life and ease of maintenance. Perfect lubrication in hip assembly ensures a low wear rate and better product life. The present work focuses on dry and wet lubrication analysis of complete implant assembly instead of an individual part. The assembly consists of a stem, head, liner and cup, each made of different materials like a ceramic femoral head mounted over a metallic femoral stem with a polyethylene liner and a metallic acetabular cup. In this work, eight metal-materials are considered for stem/cup, three ceramic materials for the head and two polyethylene materials for the liner. The combinations of these materials are evaluated for various mechanical parameters. Dry (µ = 0.13) and wet (µ = 0.05) lubricating conditions between the liner and femoral head have been considered and their effects on the head, liner and cup have been evaluated for the optimization of Hip joint design. Fifty percent of re-surgery cases arise because of excessive wear out resulting in aseptic loosening of the femoral head and liner interface. Femoral head of size 28 mm diameter with 2 mm thick liner and 3 mm thick acetabular cup are modeled and are analyzed for axial pay load of 2.3 kN. The maximum von mises stress and total deformation for various material combinations of implant assembly have been compared to select the most suitable one for the arthroplasty implantation. The combination of CoCrMo – Ceramics – HXLPE – CoCrMo demonstrates minimum stress and deformation for all three parts i.e. femoral head, liner and acetabular cup under present loading and boundary conditions. ZTA is emerged as the preferred ceramic material for femoral head having a higher compressive strength.

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Section: Introductionmentioning

confidence: 99%

Dry and Wet Lubrication Analysis for Multi-Material Hip Assembly

Ravikant

Mittal

Gupta³

2022

Int. J. Automot. Mech. Eng.

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“…There are several methodologies for qualifying the failure of carbon epoxy sandwich plates, but only a few attempts have been made to use the Digital Image Correlation (DIC) methodology for qualifying strain and/or displacement fields. DIC is used to record field variables such as deformation and strains throughout the trailing edge segment during the failure series [46][47][48]. Sutton et al defined the procedure for performing DIC for the first time in 1983.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Tensile Properties of Carbon/Epoxy Composite Materials with Different Fiber Orientation Using Digital Image Correlation

Jelić

Travica

Ugrinović

et al. 2021

Current Problems in Experimental and Computational Engineering

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Due to its remarkable qualities, carbon fiber epoxy composite sandwich panels are used in a variety of engineering applications. The goal of this research is to use tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method to characterize carbon fiber reinforced composite sandwich panels with varied fiber orientations (0°/90°and ± 45°). The tested materials were composed of carbon fiber prepregs with epoxy resin systems and Aramid synthetic fiber. The properties of the materials were determined using full-field data derived from 3D DIC measurements and a set of experiments by according to ASTM standards. Values of maximum stress and strain at entire areas, break stress and strain, and toughness at entire areas and, modulus of elasticity of both structures were compared. The adherend's full-field, out-of-plane deformation, strain distribution, and strain evolution along the bond line were captured using a digital image correlation method, allowing the fracture mechanism to be visually defined. Since DIC produces the displacement field, the strain field must be deduced from it. The orientation of the fibers had a significant impact on the tensile properties of the tested materials. The results revealed that the specimen with 0°/90°fiber orientation had higher break stress and brittle fracture, whereas the specimen with ± 45°fiber orientation twisted in the fiber direction had higher elongation values while carrying the applied load. In order to complement previously obtained results, scanning electron microscopy (SEM) analysis of the fibers and core, as well as fracture surfaces was performed.

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