Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis

Bonnheim, Noah B.; Gramling, Hannah M.; Ries, Michael D.; Shukla, Sanjai K.; Iliescu, B.; Pruitt, Lisa A.

doi:10.1016/j.artd.2017.06.005

Cited by 7 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stem head and stem rod are modeled as an elastic-plastic material. Based on previous research, there are 3 material's options used in this study, Titanium Alloy (Ti-6Al-4V), Cobalt-Chrome alloy (Co-Cr), and Stainless Steel 316L (SS 316L) [4], [6]- [8], [14], [15], [17]- [21]. Table 1 show the properties of the material that used in the analysis.…”

Section: Materials Modelmentioning

confidence: 99%

Numerical Analysis Of Stress Distribution On Artificial Hip Joint Due To Jump Activity

et al. 2018

View full text Add to dashboard Cite

Due to degenarative disorder of articular cartilage, hip joint need to be replaced with an artificial hip joint. Currently, the modular design of artificial hip joint become popular in the procedure because the modular type's provide flexibility for the surgeon. But, there were several report about the failure of modular version, and the failure was likely to happen on the neck part. The main focus of this research was to ensure the design safety of present artificial hip joint using FEM (Finite Element Method). The present artificial hip joint was loaded with force that occurred due to jump activity, and there were 3 type of materials that used in this research (Titanium Alloy (Ti-6Al-4V), Cobalt -Chrome alloy, and stainless steel (SS) 316L). The result is maximum stress that occurred on Ti-6Al-4V, Co-Cr alloy, and SS316L were 296.13 MPa, 294.02 MPa, and 294.51 MPa, respectively. The Ti-6Al-4V perform the best among the others with the safety factor of 2.7.

show abstract

Section: Materials Modelmentioning

confidence: 99%

Numerical Analysis Of Stress Distribution On Artificial Hip Joint Due To Jump Activity

et al. 2018

View full text Add to dashboard Cite

show abstract

“…7,8 This report provides detailed proof of the serious risks associated with not considering these relationships, particularly for fatigue crack initiation in real applications, in this case, an aeroengine fan hub failure of Ti6Al4V alloy, not previously considered susceptible to facet fatigue. CoCr alloys are employed in the medical device industry for a number of important applications, including cardiovascular stents 9 and orthopedic hip implants, 10,11 where design against premature fatigue failure is of critical importance. In recent years, major advances in microstructural imaging, including electron backscatter diffraction (EBSD), have enabled accurate visual characterization of grain structures and their orientation.…”

Section: Introductionmentioning

confidence: 99%

A high-fidelity crystal-plasticity finite element methodology for low-cycle fatigue using automatic electron backscatter diffraction scan conversion: Application to hot-rolled cobalt–chromium alloy

Leen

Harrison

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

The common approach to crystal-plasticity finite element modeling for load-bearing prediction of metallic structures involves the simulation of simplified grain morphology and substructure detail. This paper details a methodology for predicting the structure–property effect of as-manufactured microstructure, including true grain morphology and orientation, on cyclic plasticity, and fatigue crack initiation in biomedical-grade CoCr alloy. The methodology generates high-fidelity crystal-plasticity finite element models, by directly converting measured electron backscatter diffraction metal microstructure grain maps into finite element microstructural models, and thus captures essential grain definition for improved microstructure–property analyses. This electron backscatter diffraction-based method for crystal-plasticity finite element model generation is shown to give approximately 10% improved agreement for fatigue life prediction, compared with the more commonly used Voronoi tessellation method. However, the added microstructural detail available in electron backscatter diffraction–crystal-plasticity finite element did not significantly alter the bulk stress–strain response prediction, compared to Voronoi tessellation–crystal-plasticity finite element. The new electron backscatter diffraction-based method within a strain-gradient crystal-plasticity finite element model is also applied to predict measured grain size effects for cyclic plasticity and fatigue crack initiation, and shows the concentration of geometrically necessary dislocations around true grain boundaries, with smaller grain samples exhibiting higher overall geometrically necessary dislocations concentrations. In addition, minimum model sizes for Voronoi tessellation–crystal-plasticity finite element and electron backscatter diffraction–crystal-plasticity finite element models are proposed for cyclic hysteresis and fatigue crack initiation prediction.

show abstract

Effect of carbon fiber type on monotonic and fatigue properties of orthopedic grade PEEK

Bonnheim

Ansari

Regis

et al. 2019

Journal of the Mechanical Behavior of Biomedical Materials

View full text Add to dashboard Cite

Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis

Cited by 7 publications

References 21 publications

Numerical Analysis Of Stress Distribution On Artificial Hip Joint Due To Jump Activity

Numerical Analysis Of Stress Distribution On Artificial Hip Joint Due To Jump Activity

A high-fidelity crystal-plasticity finite element methodology for low-cycle fatigue using automatic electron backscatter diffraction scan conversion: Application to hot-rolled cobalt–chromium alloy

Effect of carbon fiber type on monotonic and fatigue properties of orthopedic grade PEEK

Contact Info

Product

Resources

About