ADDITIVELY MANUFACTURED Ti6Al4V LATTICE STRUCTURES FOR BIOMEDICAL APPLICATIONS

Öz

Additive Manufacturing (AM) is a rapidly developing technology which provides opportunity to build up complex geometries due to the freedom of manufacturing. Lattice structures, three-dimensional open-celled structures composed of one or more repeating unit cells, can be produced with unique mechanical, thermal, acoustic, biomedical and electrical properties by optimization of type and dimension of unit cell and additive manufacturing parameters. Lattice structures provide lightweight and porous parts which are widely preferable in biomedical applications. Different type of lattice structures have been used for obtaining bone like implant surface to accelerate osseointegration. There are many studies in this field, but the ideal designs and dimensional accuracy of the various lattice structures for biomedical field have not been completely reached. In this study, octahedral, star and dodecahedron lattice structures with thin strut diameter were manufactured by laser powder bed fusion technology (LPBF) by Ti6Al4V powder. Cubic and plate samples were built on z-direction and their top and side surfaces were inspected in terms of topographical characteristics and dimensional accuracy by scanning electron microscope. Dimensional accuracy has been found to tend to shrinkage behavior for all lattice structures. The best dimensional accuracy was obtained from octahedral lattice structure comparing with strut diameters.

Anahtar Kelimeler

• Keywords: Additive Manufacturing. Lattice Structures. Powder Bed Fusion. Ti6Al4V.Orthopedic Prosthesis

Proje Numarası

FDK-2021-4135

ADDITIVELY MANUFACTURED Ti6Al4V LATTICE STRUCTURES FOR BIOMEDICAL APPLICATIONS

Öz

Additive Manufacturing (AM) is a rapidly developing technology which provides opportunity to build up complex geometries due to the freedom of manufacturing. Lattice structures, three-dimensional open-celled structures composed of one or more repeating unit cells, can be produced with unique mechanical, thermal, acoustic, biomedical and electrical properties by optimization of type and dimension of unit cell and additive manufacturing parameters. Lattice structures provide lightweight and porous parts which are widely preferable in biomedical applications. Different type of lattice structures have been used for obtaining bone like implant surface to accelerate osseointegration. There are many studies in this field, but the ideal designs and dimensional accuracy of the various lattice structures for biomedical field have not been completely reached. In this study, octahedral, star and dodecahedron lattice structures with thin strut diameter were manufactured by laser powder bed fusion technology (LPBF) by Ti6Al4V powder. Cubic and plate samples were built on z-direction and their top and side surfaces were inspected in terms of topographical characteristics and dimensional accuracy by scanning electron microscope.

Anahtar Kelimeler

• Additive Manufacturing
• Lattice Structures. Powder Bed Fusion
• Ti6Al4V
• Orthopedic Prosthesis

Destekleyen Kurum

Yıldız Teknik Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi

Proje Numarası

FDK-2021-4135

Teşekkür

This work was supported by Yildiz Technical University Scientific Research Projects Coordination Unit. Project Number: FDK-2021-4135.

Kaynakça

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