Mechanical anisotropy of ABS specimens 3D printed by FDM
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2019
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BRAZIL MRS MEETING, 18th
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Resumo
Additive manufacturing (AM) has been developed as a technique for fast
fabrication of component parts through 3D printing, using a process of adding
successive layers, one after another.
The Fused Deposition Modeling (FDM) technique is a 3D printing process that
generally uses a thermoplastic filament as the printing base material. The
material is fed by a coil and the head of the extruder performing the process is
heated. Printing can be done in several directions, depending on the purpose of
the component part.
In this work mechanical tests were done on ABS (Acrylonitrile-Butadiene-Styrene)
tensile specimens built by FDM, in different orientations, to analyze its properties
and to make a correlation between these properties and the influence of the
printing direction in the final product.
The tensile specimens in dog bone shaped were tested according to the ASTM
D638 standards. The experiments were done at room temperature. The horizontal
built specimens (H-specimens), fabricated in the z-direction, while the beads were
layered along the x and y direction, parallel to the build table, showed the
maximum resistance of 30 MPa. The specimens built with their gage length out of
x-y plane (V-specimen and D-specimen, vertical and diagonal specimens
respectively) presented lower ultimate strength, for instance 14 MPa for the Vspecimen.
Additional investigation is on the way to understand the presence of defects
(cavities and crazes) in the ABS microstructure since the literature points that the
ability to manipulate it is the key to an improved performance of this type of
structural material.
Como referenciar
ANDRADE, ARNALDO H.P. de; LOBO, RAQUEL de M.; BREDA, FRANCISCO J.; CASTAGNET, MARIANO. Mechanical anisotropy of ABS specimens 3D printed by FDM. In: BRAZIL MRS MEETING, 18th, September 22-26, 2019, Balneário Camburiú, SC. Abstract... São Carlos, SP: Aptor Software, 2019. p. 2564-2564. Disponível em: http://repositorio.ipen.br/handle/123456789/31044. Acesso em: 10 May 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.