Cargando…

Pore Geometry Optimization of Titanium (Ti6Al4V) Alloy, for Its Application in the Fabrication of Customized Hip Implants

The present study investigates the mechanical response of representative volume elements of porous Ti-6Al-4V alloy, to arrive at a desired range of pore geometries that would optimize the reduction in stiffness necessary for biocompatibility with the stress concentration arising around the pore peri...

Descripción completa

Detalles Bibliográficos
Autores principales: Roy, Sandipan, Panda, Debojyoti, Khutia, Niloy, Chowdhury, Amit Roy
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4221907/
https://www.ncbi.nlm.nih.gov/pubmed/25400663
http://dx.doi.org/10.1155/2014/313975
_version_ 1782342949668913152
author Roy, Sandipan
Panda, Debojyoti
Khutia, Niloy
Chowdhury, Amit Roy
author_facet Roy, Sandipan
Panda, Debojyoti
Khutia, Niloy
Chowdhury, Amit Roy
author_sort Roy, Sandipan
collection PubMed
description The present study investigates the mechanical response of representative volume elements of porous Ti-6Al-4V alloy, to arrive at a desired range of pore geometries that would optimize the reduction in stiffness necessary for biocompatibility with the stress concentration arising around the pore periphery, under physiological loading conditions with respect to orthopedic hip implants. A comparative study of the two is performed with the aid of a newly defined optimizing parameter called pore efficiency that takes into consideration both the stiffness quantity and the stress localization around pores. To perform a detailed analysis of the response of the porous structure over the entire spectrum of loading conditions that a hip implant is subjected to in vivo, the mechanical responses of 3D finite element models of cubic and rectangular parallelepiped geometries, with porosities varying over a range of 10% to 60%, are simulated under representative compressive, flexural as well as combined loading conditions. The results that are obtained are used to suggest a range of pore diameters that lower the effective stiffness and modulus of the implant to around 60% of the stiffness and modulus of dense solid implants while keeping the stress levels within permissible limits.
format Online
Article
Text
id pubmed-4221907
institution National Center for Biotechnology Information
language English
publishDate 2014
publisher Hindawi Publishing Corporation
record_format MEDLINE/PubMed
spelling pubmed-42219072014-11-16 Pore Geometry Optimization of Titanium (Ti6Al4V) Alloy, for Its Application in the Fabrication of Customized Hip Implants Roy, Sandipan Panda, Debojyoti Khutia, Niloy Chowdhury, Amit Roy Int J Biomater Research Article The present study investigates the mechanical response of representative volume elements of porous Ti-6Al-4V alloy, to arrive at a desired range of pore geometries that would optimize the reduction in stiffness necessary for biocompatibility with the stress concentration arising around the pore periphery, under physiological loading conditions with respect to orthopedic hip implants. A comparative study of the two is performed with the aid of a newly defined optimizing parameter called pore efficiency that takes into consideration both the stiffness quantity and the stress localization around pores. To perform a detailed analysis of the response of the porous structure over the entire spectrum of loading conditions that a hip implant is subjected to in vivo, the mechanical responses of 3D finite element models of cubic and rectangular parallelepiped geometries, with porosities varying over a range of 10% to 60%, are simulated under representative compressive, flexural as well as combined loading conditions. The results that are obtained are used to suggest a range of pore diameters that lower the effective stiffness and modulus of the implant to around 60% of the stiffness and modulus of dense solid implants while keeping the stress levels within permissible limits. Hindawi Publishing Corporation 2014 2014-10-21 /pmc/articles/PMC4221907/ /pubmed/25400663 http://dx.doi.org/10.1155/2014/313975 Text en Copyright © 2014 Sandipan Roy et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Roy, Sandipan
Panda, Debojyoti
Khutia, Niloy
Chowdhury, Amit Roy
Pore Geometry Optimization of Titanium (Ti6Al4V) Alloy, for Its Application in the Fabrication of Customized Hip Implants
title Pore Geometry Optimization of Titanium (Ti6Al4V) Alloy, for Its Application in the Fabrication of Customized Hip Implants
title_full Pore Geometry Optimization of Titanium (Ti6Al4V) Alloy, for Its Application in the Fabrication of Customized Hip Implants
title_fullStr Pore Geometry Optimization of Titanium (Ti6Al4V) Alloy, for Its Application in the Fabrication of Customized Hip Implants
title_full_unstemmed Pore Geometry Optimization of Titanium (Ti6Al4V) Alloy, for Its Application in the Fabrication of Customized Hip Implants
title_short Pore Geometry Optimization of Titanium (Ti6Al4V) Alloy, for Its Application in the Fabrication of Customized Hip Implants
title_sort pore geometry optimization of titanium (ti6al4v) alloy, for its application in the fabrication of customized hip implants
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4221907/
https://www.ncbi.nlm.nih.gov/pubmed/25400663
http://dx.doi.org/10.1155/2014/313975
work_keys_str_mv AT roysandipan poregeometryoptimizationoftitaniumti6al4valloyforitsapplicationinthefabricationofcustomizedhipimplants
AT pandadebojyoti poregeometryoptimizationoftitaniumti6al4valloyforitsapplicationinthefabricationofcustomizedhipimplants
AT khutianiloy poregeometryoptimizationoftitaniumti6al4valloyforitsapplicationinthefabricationofcustomizedhipimplants
AT chowdhuryamitroy poregeometryoptimizationoftitaniumti6al4valloyforitsapplicationinthefabricationofcustomizedhipimplants