- Tytuł:
- Prediction of brittle fracture propagation behaviour of hydroxyapatite (HAp) coating in artificial femoral stem component
- Autorzy:
-
Sheng, C.H.
Nagentrau, M.
Ibrahim, N.H. - Powiązania:
- https://bibliotekanauki.pl/articles/2201136.pdf
- Data publikacji:
- 2022
- Wydawca:
- Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
- Tematy:
-
hydroxyapatite (HAp)
fracture
stress intensity factor (SIF)
artificial femoral stem
hydroksyapatyt (HAp)
złamanie
współczynnik intensywności naprężeń
sztuczny trzon kości udowej - Opis:
- Purpose: This study addresses the brittle fracture propagation behaviour modelling of hydroxyapatite (HAp) coating in artificial femoral stem component. Design/methodology/approach: A simple two dimensional flat-on-flat contact configuration finite element model consisting contact pad (bone), Ti-6Al-4V substrate and HAp coating is employed in static simulation. The HAp coating is modelled as elastic layer with pre-microcrack which assumed to be initiated due to stress singularity. Findings: The study revealed that reducing coating thickness, pre-microcrack length and artificial femoral stem elastic modulus along with increasing bone elastic modulus will result in significant stress intensity factor (SIF) to promote brittle fracture propagation behaviour. Research limitations/implications: The influence of coating thickness, pre-microcrack length, bone and artificial femoral stem elastic modulus on fracture behaviour is examined under different stress ratio using J-integral analysis approach. Practical implications: The proposed finite element model can be easily accommodating different Hap coating thickness, pre-microcrack length, bone and artificial femoral stem elastic modulus to perform detailed parametric studies with minimal costly experimental works. Originality/value: Limited research focussing on brittle fracture propagation behaviour of HAp coating in artificial femoral stem component. Thus, present study analysed the influence of coating thickness, pre-microcrack length, bone and artificial femoral stem elastic modulus on stress intensity factor (SIF) of HAp coating.
- Źródło:
-
Archives of Materials Science and Engineering; 2022, 113, 3; 34--41
1897-2764 - Pojawia się w:
- Archives of Materials Science and Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł