Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions
Abstract
One of the most important aspects of materials typically used in biomedical engineering is their resistance to various unfavourable exploitation conditions, which greatly impact their work life. In terms of extreme conditions, two major factors include fatigue and corrosion, and a combination of these can significantly decrease the expected life of various implants. The focus of this paper will be on hip implants made of Ti-Al6-4V titanium alloy, a material commonly used in such applications, due to its resistance to corrosion and bio-compatibility. Research shown here was based on experimental testing of said alloy in order to determine its mechanical properties under different working environments, including normal, salty and wet conditions. These properties were then used as input data for Extended Finite Element method (XFEM) numerical simulations of fatigue crack growth in hip implants with various geometries. This was of particular interest since specimens which were kept in salt...y and wet environment had a slight degradation of yield stress and tensile strength, but an increase in plasticity.
Keywords:
Ti-Al6-V4 alloy / hip implants / fatigue crack growth / corrosion / Extended Finite Element MethodSource:
Procedia Structural Integrity, 2023, 48, 215-221Collections
Institution/Community
Inovacioni centarTY - CONF AU - Smoljanić, Tamara AU - Sedmak, Simon AU - Milovanović, Aleksa AU - Milović, Ljubica PY - 2023 UR - https://machinery.mas.bg.ac.rs/handle/123456789/7110 AB - One of the most important aspects of materials typically used in biomedical engineering is their resistance to various unfavourable exploitation conditions, which greatly impact their work life. In terms of extreme conditions, two major factors include fatigue and corrosion, and a combination of these can significantly decrease the expected life of various implants. The focus of this paper will be on hip implants made of Ti-Al6-4V titanium alloy, a material commonly used in such applications, due to its resistance to corrosion and bio-compatibility. Research shown here was based on experimental testing of said alloy in order to determine its mechanical properties under different working environments, including normal, salty and wet conditions. These properties were then used as input data for Extended Finite Element method (XFEM) numerical simulations of fatigue crack growth in hip implants with various geometries. This was of particular interest since specimens which were kept in salty and wet environment had a slight degradation of yield stress and tensile strength, but an increase in plasticity. C3 - Procedia Structural Integrity T1 - Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions EP - 221 SP - 215 VL - 48 DO - 10.1016/j.prostr.2023.07.151 ER -
@conference{ author = "Smoljanić, Tamara and Sedmak, Simon and Milovanović, Aleksa and Milović, Ljubica", year = "2023", abstract = "One of the most important aspects of materials typically used in biomedical engineering is their resistance to various unfavourable exploitation conditions, which greatly impact their work life. In terms of extreme conditions, two major factors include fatigue and corrosion, and a combination of these can significantly decrease the expected life of various implants. The focus of this paper will be on hip implants made of Ti-Al6-4V titanium alloy, a material commonly used in such applications, due to its resistance to corrosion and bio-compatibility. Research shown here was based on experimental testing of said alloy in order to determine its mechanical properties under different working environments, including normal, salty and wet conditions. These properties were then used as input data for Extended Finite Element method (XFEM) numerical simulations of fatigue crack growth in hip implants with various geometries. This was of particular interest since specimens which were kept in salty and wet environment had a slight degradation of yield stress and tensile strength, but an increase in plasticity.", journal = "Procedia Structural Integrity", title = "Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions", pages = "221-215", volume = "48", doi = "10.1016/j.prostr.2023.07.151" }
Smoljanić, T., Sedmak, S., Milovanović, A.,& Milović, L.. (2023). Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions. in Procedia Structural Integrity, 48, 215-221. https://doi.org/10.1016/j.prostr.2023.07.151
Smoljanić T, Sedmak S, Milovanović A, Milović L. Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions. in Procedia Structural Integrity. 2023;48:215-221. doi:10.1016/j.prostr.2023.07.151 .
Smoljanić, Tamara, Sedmak, Simon, Milovanović, Aleksa, Milović, Ljubica, "Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions" in Procedia Structural Integrity, 48 (2023):215-221, https://doi.org/10.1016/j.prostr.2023.07.151 . .