Abstract
Fretting of the stem-head joint in a prosthetic hip implant is investigated experimentally and computationally. An FE-based methodology for fretting wear-fatigue prediction in a prosthetic hip implant is developed. Tribological and profilometry tests are performed for two head stem material combinations: Coâ28Crâ6Mo DMLS Tiâ6Alâ4V and Coâ28Crâ6Mo forged Tiâ6Alâ4V. The hardness and wear resistance of DMLS Tiâ6Alâ4V are shown to be superior to those of forged Tiâ6Alâ4V. The significance of wear in a hip joint for 10 years of service in a normal weight person for moderately intense exercise is predicted for both material combinations. Both material combination joints are shown to have excellent wear resistance which suggests that the wear debris emission will not be significant.
| Original language | English (Ireland) |
|---|---|
| Number of pages | 14 |
| Journal | Tribology International |
| Volume | 65 |
| Publication status | Published - 1 Jan 2013 |
Authors (Note for portal: view the doc link for the full list of authors)
- Authors
- Zhang, T. and Harrison, N. M. and McDonnell, P. F. and McHugh, P. E. and Leen, S. B.
- Zhang, T.,Harrison, N. M.,McDonnell, P. F.,McHugh, P. E.,Leen, S. B.