Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant
Abstract
Total hip replacement implants are used as an artificial replacement for disfunctional hips in order to sustain joint movement. Chosen material and design of total hip replacement are the most influential factors for artificial joint utilization. Selected total hip replacement is obtained by precision casting method, made from Ti6Al4V ELI (Extra Low Interstitials) alloy. In order to acquire a geometrical model of chosen implant, the 3D scanner is used and an obtained point cloud (PC), then exploited for reverse engineering to a CAD model. The neck thickness of implant affects angle of movement of the joint and structural integrity. Reducing the thickness of the neck section results in higher movement of the joint, but inversely affects its structural integrity. The 3D scanned implant has a neck thickness of 14.6 mm, and data from literature suggest that the best movement angle is for 9 mm thickness of the implant. In order to redesign the available implant, five different models with a... neck thickness between 9 and 14.6 mm are made. Obtained results show the thickness effects the stress distribution in a critical area.
Keywords:
total hip replacement implant / finite element method (FEM) / Ti-6Al-4V ELI alloy / reverse engineering / 3D scanner 'Geomagic Capture'Source:
Structural Integrity and Life, 2019, 19, 3, 237-242Publisher:
- Society for Structural Integrity and Life, Institute for Material Testing
Funding / projects:
- Sustainability and improvement of mechanical systems in energetic, material handling and conveying by using forensic engineering, environmental and robust design (RS-35006)
- Developed new methods for diagnosis and examination mechanical structures (RS-35040)
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Mijatović, Tamara AU - Milovanović, Aleksa AU - Sedmak, Aleksandar AU - Milović, Ljubica AU - Čolić, Katarina PY - 2019 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4195 AB - Total hip replacement implants are used as an artificial replacement for disfunctional hips in order to sustain joint movement. Chosen material and design of total hip replacement are the most influential factors for artificial joint utilization. Selected total hip replacement is obtained by precision casting method, made from Ti6Al4V ELI (Extra Low Interstitials) alloy. In order to acquire a geometrical model of chosen implant, the 3D scanner is used and an obtained point cloud (PC), then exploited for reverse engineering to a CAD model. The neck thickness of implant affects angle of movement of the joint and structural integrity. Reducing the thickness of the neck section results in higher movement of the joint, but inversely affects its structural integrity. The 3D scanned implant has a neck thickness of 14.6 mm, and data from literature suggest that the best movement angle is for 9 mm thickness of the implant. In order to redesign the available implant, five different models with a neck thickness between 9 and 14.6 mm are made. Obtained results show the thickness effects the stress distribution in a critical area. PB - Society for Structural Integrity and Life, Institute for Material Testing T2 - Structural Integrity and Life T1 - Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant EP - 242 IS - 3 SP - 237 VL - 19 UR - https://hdl.handle.net/21.15107/rcub_technorep_4195 ER -
@article{ author = "Mijatović, Tamara and Milovanović, Aleksa and Sedmak, Aleksandar and Milović, Ljubica and Čolić, Katarina", year = "2019", abstract = "Total hip replacement implants are used as an artificial replacement for disfunctional hips in order to sustain joint movement. Chosen material and design of total hip replacement are the most influential factors for artificial joint utilization. Selected total hip replacement is obtained by precision casting method, made from Ti6Al4V ELI (Extra Low Interstitials) alloy. In order to acquire a geometrical model of chosen implant, the 3D scanner is used and an obtained point cloud (PC), then exploited for reverse engineering to a CAD model. The neck thickness of implant affects angle of movement of the joint and structural integrity. Reducing the thickness of the neck section results in higher movement of the joint, but inversely affects its structural integrity. The 3D scanned implant has a neck thickness of 14.6 mm, and data from literature suggest that the best movement angle is for 9 mm thickness of the implant. In order to redesign the available implant, five different models with a neck thickness between 9 and 14.6 mm are made. Obtained results show the thickness effects the stress distribution in a critical area.", publisher = "Society for Structural Integrity and Life, Institute for Material Testing", journal = "Structural Integrity and Life", title = "Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant", pages = "242-237", number = "3", volume = "19", url = "https://hdl.handle.net/21.15107/rcub_technorep_4195" }
Mijatović, T., Milovanović, A., Sedmak, A., Milović, L.,& Čolić, K.. (2019). Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant. in Structural Integrity and Life Society for Structural Integrity and Life, Institute for Material Testing., 19(3), 237-242. https://hdl.handle.net/21.15107/rcub_technorep_4195
Mijatović T, Milovanović A, Sedmak A, Milović L, Čolić K. Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant. in Structural Integrity and Life. 2019;19(3):237-242. https://hdl.handle.net/21.15107/rcub_technorep_4195 .
Mijatović, Tamara, Milovanović, Aleksa, Sedmak, Aleksandar, Milović, Ljubica, Čolić, Katarina, "Integrity assessment of reverse engineered ti-6al-4v eli total hip replacement implant" in Structural Integrity and Life, 19, no. 3 (2019):237-242, https://hdl.handle.net/21.15107/rcub_technorep_4195 .