On the SLM and EBM of Ti-6Al-4V ELI alloy for advanced knee arthroplasty

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

On the SLM and EBM of Ti-6Al-4V ELI alloy for advanced knee arthroplasty

Popis výsledku v původním jazyce

Research and development of a novel implant knee design and insertion technology, preservation of original healthy bone, light mass of the implant, prolongation of time for re-operation. Optimisation of technological routines for production of samples made from Ti6Al4V ELI powder suitable for knee implant production, testing of dimensional accuracy, quality, mechanical and fatigue properties, production of implant prototypes. Selective Laser Melting (SLM) and Electron Beam Melting (EBM) of the Ti6Al4V ELI alloy, advanced machining, analytical electron microscopy, mechanical, tribological and fatigue testing were used as principal techniques. Two series of solid cylindrical specimens (diameter 14mm, length 120mm; 24 bits) were made for the standard mechanical testing. Several samples of knee implants have been made and tested also. Both additive technologies proved to be competitive for the knee implant production. The EBM technology allowed a production of very fine structured materials with a low porosity (<0.1%), high mechanical properties of Ti6Al4V (tensile strength more than 1,000 MPa, elongation more than 12%), tumbled glossy surface (Ra<0.03) m, and better fatigue resistance (tension/thrust mode). A statistically significant low coefficient of friction on high molecular polyethylene (p<0.01) compared to the standard polishing was found due to smooth surface topography of samples. The novel design of the knee implant, digital technologies, EBM technology and surface post-processing of Ti6Al4V, allow to reduce the weight of the novel type of the distal femur implant (> 60%) with a higher preservation of the original bone. The EBM samples showed a better combination of tensile strengths, plasticity and fatigue resistance.

Název v anglickém jazyce

On the SLM and EBM of Ti-6Al-4V ELI alloy for advanced knee arthroplasty

Popis výsledku anglicky

Research and development of a novel implant knee design and insertion technology, preservation of original healthy bone, light mass of the implant, prolongation of time for re-operation. Optimisation of technological routines for production of samples made from Ti6Al4V ELI powder suitable for knee implant production, testing of dimensional accuracy, quality, mechanical and fatigue properties, production of implant prototypes. Selective Laser Melting (SLM) and Electron Beam Melting (EBM) of the Ti6Al4V ELI alloy, advanced machining, analytical electron microscopy, mechanical, tribological and fatigue testing were used as principal techniques. Two series of solid cylindrical specimens (diameter 14mm, length 120mm; 24 bits) were made for the standard mechanical testing. Several samples of knee implants have been made and tested also. Both additive technologies proved to be competitive for the knee implant production. The EBM technology allowed a production of very fine structured materials with a low porosity (<0.1%), high mechanical properties of Ti6Al4V (tensile strength more than 1,000 MPa, elongation more than 12%), tumbled glossy surface (Ra<0.03) m, and better fatigue resistance (tension/thrust mode). A statistically significant low coefficient of friction on high molecular polyethylene (p<0.01) compared to the standard polishing was found due to smooth surface topography of samples. The novel design of the knee implant, digital technologies, EBM technology and surface post-processing of Ti6Al4V, allow to reduce the weight of the novel type of the distal femur implant (> 60%) with a higher preservation of the original bone. The EBM samples showed a better combination of tensile strengths, plasticity and fatigue resistance.

Druh

A - Audiovizuální tvorba

CEP obor

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OECD FORD obor

30211 - Orthopaedics

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

ISBN

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Místo vydání

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Název nakladatele resp. objednatele

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Verze

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Identifikační číslo nosiče

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