Delamination-fretting wear failure evaluation at HAp-Ti-6Al–4V interface of uncemented artificial hip implant

Present research aims to develop a finite element computational model examine delamination-fretting wear behaviour that can suitably mimic actual loading conditions at HAp-Ti-6Al–4V interface of uncemented hip implant femoral stem component. A simple contact configuration based on fretting fatigue experimental arrangement subjected different mechanical and tribological properties consist pad (bone), HAp coating Ti–6Al–4V substrate are developed using adaptive modelling approach adopting modified Archard equation be examined under static simulation. The is validated verified with reported literatures. findings revealed significant recorded edge (leading edge) as result substantial pressure slip driven by stress singularity effect. promoted higher delamination length, lower normal loading, increased porous (cancellous) cortical bone elastic modulus cycle number due relative amplitude the reduced rigidity. Tensile-compressive condition (R=−1) experiences most (8 times higher) compared ratio R=0.1 R=10.