Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser melting

Detalhes bibliográficos
Autor(a) principal: Bartolomeu, Flávio
Data de Publicação: 2020
Outros Autores: Costa, M. M., Alves, N., Miranda, G., Silva, Filipe Samuel
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/74726
Resumo: Nickel-titanium (NiTi) cellular structures are a very promising solution to some issues related to orthopaedic implant failure. These structures can be designed and fabricated to simultaneously address a combination of mechanical and physical properties, such as elastic modulus, porosity, wear and corrosion resistance, biocompatibility and appropriate biological environment. This ability can enhance the modest interaction currently existing between metallic dense implants and surrounding bone tissue, allowing long-term successful orthopaedic implants. For that purpose, NiTi cellular structures with different levels of porosity intended to reduce the elastic modulus were designed, modelled, selective laser melting (SLM) fabricated and characterized. Significant differences were found between the CAD design and the SLM-produced NiTi structures by performing systematic image analysis. This work proposes designing guidelines to anticipate and correct the systematic differences between CAD and produced structures. Compressive tests were carried out to estimate the elastic modulus of the produced structures and finite element analyses were performed, for comparison purposes. Linear correlations were found for the dimensions, porosity, and elastic modulus when comparing the CAD design with the SLM structures. The produced NiTi structures exhibit elastic moduli that match that of bone tissue, which is a good indication of the potential of these structures in orthopaedic implants.
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spelling Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser meltingNiTiPower bed fusionSelective laser meltingCellular structuresElastic modulusScience & TechnologyNickel-titanium (NiTi) cellular structures are a very promising solution to some issues related to orthopaedic implant failure. These structures can be designed and fabricated to simultaneously address a combination of mechanical and physical properties, such as elastic modulus, porosity, wear and corrosion resistance, biocompatibility and appropriate biological environment. This ability can enhance the modest interaction currently existing between metallic dense implants and surrounding bone tissue, allowing long-term successful orthopaedic implants. For that purpose, NiTi cellular structures with different levels of porosity intended to reduce the elastic modulus were designed, modelled, selective laser melting (SLM) fabricated and characterized. Significant differences were found between the CAD design and the SLM-produced NiTi structures by performing systematic image analysis. This work proposes designing guidelines to anticipate and correct the systematic differences between CAD and produced structures. Compressive tests were carried out to estimate the elastic modulus of the produced structures and finite element analyses were performed, for comparison purposes. Linear correlations were found for the dimensions, porosity, and elastic modulus when comparing the CAD design with the SLM structures. The produced NiTi structures exhibit elastic moduli that match that of bone tissue, which is a good indication of the potential of these structures in orthopaedic implants.This work was supported by FCT (Fundação para a Ciência e Tecnologia) through the grant SFRH/BD/128657/2017 and the projects POCI-01-0145-FEDER-030353 (SMARTCUT), NORTE 01–0145_FEDER000018-HAMaBICo, UID/EEA/04436/2019 and UID/Multi/04044/2019.ElsevierUniversidade do MinhoBartolomeu, FlávioCosta, M. M.Alves, N.Miranda, G.Silva, Filipe Samuel20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/74726eng1751-616110.1016/j.jmbbm.2020.10389132957198https://www.sciencedirect.com/science/article/pii/S1751616120304458?via%3Dihubinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:07:13Zoai:repositorium.sdum.uminho.pt:1822/74726Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:58:06.400107Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser melting
title Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser melting
spellingShingle Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser melting
Bartolomeu, Flávio
NiTi
Power bed fusion
Selective laser melting
Cellular structures
Elastic modulus
Science & Technology
title_short Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser melting
title_full Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser melting
title_fullStr Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser melting
title_full_unstemmed Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser melting
title_sort Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser melting
author Bartolomeu, Flávio
author_facet Bartolomeu, Flávio
Costa, M. M.
Alves, N.
Miranda, G.
Silva, Filipe Samuel
author_role author
author2 Costa, M. M.
Alves, N.
Miranda, G.
Silva, Filipe Samuel
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Bartolomeu, Flávio
Costa, M. M.
Alves, N.
Miranda, G.
Silva, Filipe Samuel
dc.subject.por.fl_str_mv NiTi
Power bed fusion
Selective laser melting
Cellular structures
Elastic modulus
Science & Technology
topic NiTi
Power bed fusion
Selective laser melting
Cellular structures
Elastic modulus
Science & Technology
description Nickel-titanium (NiTi) cellular structures are a very promising solution to some issues related to orthopaedic implant failure. These structures can be designed and fabricated to simultaneously address a combination of mechanical and physical properties, such as elastic modulus, porosity, wear and corrosion resistance, biocompatibility and appropriate biological environment. This ability can enhance the modest interaction currently existing between metallic dense implants and surrounding bone tissue, allowing long-term successful orthopaedic implants. For that purpose, NiTi cellular structures with different levels of porosity intended to reduce the elastic modulus were designed, modelled, selective laser melting (SLM) fabricated and characterized. Significant differences were found between the CAD design and the SLM-produced NiTi structures by performing systematic image analysis. This work proposes designing guidelines to anticipate and correct the systematic differences between CAD and produced structures. Compressive tests were carried out to estimate the elastic modulus of the produced structures and finite element analyses were performed, for comparison purposes. Linear correlations were found for the dimensions, porosity, and elastic modulus when comparing the CAD design with the SLM structures. The produced NiTi structures exhibit elastic moduli that match that of bone tissue, which is a good indication of the potential of these structures in orthopaedic implants.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/74726
url http://hdl.handle.net/1822/74726
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1751-6161
10.1016/j.jmbbm.2020.103891
32957198
https://www.sciencedirect.com/science/article/pii/S1751616120304458?via%3Dihub
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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