Employing the TOPSIS selection method to assess the use of Ti-6Al-4V ELI processed by additive manufacturing in hip implants
Empregando o método de seleção TOPSIS para avaliar o uso de Ti-6Al-4V ELI processado por manufatura aditiva em implantes de quadril
Leonardo Contri Campanelli; Arthur Tafuri Fernandes; Danieli Aparecida Pereira Reis
Abstract
The processing of medical components of Ti-6Al-4V ELI typically includes forging and machining. Recently there has been a growing interest in additive manufacturing since this technology allows the production of customized components with high dimensional precision and minimum material loss. However, there are problems associated with additive manufacturing, such as the need to employ finishing methods and mainly the reduction of fatigue performance by internal defects and high surface roughness. This work aimed to evaluate the likelihood of using the Ti-6Al-4V ELI alloy processed by additive manufacturing in hip implants. A material selection method based on the weighting of characteristics was used considering solely aspects of mechanical properties. Hence, in a mechanical performance scenario, some processes involving additive manufacturing were found to be feasible for application in hip implants, for instance Directed Energy Deposition (DED) and Selective Laser Melting (SLM), both followed by machining.
Keywords
Resumo
O processamento de componentes médicos de Ti-6Al-4V ELI tipicamente inclui forjamento e usinagem. Recentemente tem havido um crescente interesse na manufatura aditiva, pois essa tecnologia permite a produção de componentes customizados com alta precisão dimensional e perda mínima de material. No entanto, existem problemas associados à manufatura aditiva, tais como a necessidade de empregar métodos de acabamento e principalmente a redução do desempenho à fadiga por defeitos internos e alta rugosidade superficial. Este trabalho teve como objetivo avaliar a probabilidade de utilização da liga Ti-6Al-4V ELI processada por manufatura aditiva em implantes de quadril. Foi utilizado um método de seleção de materiais baseado na ponderação de características considerando apenas aspectos de propriedades mecânicas. Assim, em um cenário de desempenho mecânico, alguns processos envolvendo manufatura aditiva mostraram-se viáveis para aplicação em implantes de quadril, por exemplo, Deposição com Energia Direcionada (DED) e Fusão Seletiva a Laser (FSL), ambos seguidos de usinagem.
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Referências
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Submetido em:
20/01/2023
Aceito em:
19/05/2023
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