Title: Mechanical capabilities of semi-rigid thermoplastics ABS and PLA from 3D printing

Authors: Jaime Vinicio Molina-Osejos; Cesar Ayabaca-Sarria; Diana Belén Peralta-Zurita; Santiago Gómez-Rosero; Gustavo Adolfo Moreno-Jimenez

Addresses: Ingeniería Mecánica, Arquitectura e Ingeniería, Universidad Internacional SEK del Ecuador, Albert Einstein y 5ta Transversal, Quito, 170120, Pichincha, Ecuador ' Mecánica, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, Quito, 170120, Pichincha, Ecuador ' Arquitectura e Ingeniería, Ingeniería Mecánica, Universidad Internacional SEK del Ecuador, Albert Einstein y 5ta Transversal, Quito, 170120, Pichincha, Ecuador ' Electrical and Computer Engineering, Western University of Ontario, 1151 Richmond St, London, N6A 3K7, Ontario, Canada ' Arquitectura e Ingeniería, Ingeniería Mecánica, Universidad Internacional SEK del Ecuador, Albert Einstein y 5ta Transversal, Quito, 170120, Pichincha, Ecuador

Abstract: The use of 3D printing is more common in industries, such as textiles, food, aeronautics, automotive, medicine and others, because of its great versatility during the manufacturing process generation of elements or components with high geometric complexity in relatively short time at low cost. This study presents the characterisation of semi-rigid acrylonitrile-butadiene-styrene (ABS) and polylactic acid (PLA), which was obtained using both of additive manufacturing and specifically the molten material deposition method. The semi-rigid samples were made with five different infill patterns in their interiors: triangle, square, pentagon, and circles. The samples were subjected to tensile and bending tests, which allowed the evaluation of the yield strength, ultimate tensile strength, deformation and modulus of elasticity. Also, ASTM D638-14 and ASTM D790-10 norms were used for methodology validation. The results determined that the distribution of concentric circles with 7,964 MPa/g and 12,234 MPa/g was the best for PLA and the square with 8.82 MPa/g and 8,994 MPa/g was the best for ABS respectively.

Keywords: acrylonitrile-butadiene-styrene; ABS; polylactic acid; PLA; material characterisation; 3D printing; yield strength; deformation; fused deposition modelling; FDM; mechanical resistance.

DOI: 10.1504/IJMPT.2019.102938

International Journal of Materials and Product Technology, 2019 Vol.59 No.3, pp.253 - 269

Received: 14 Jul 2018
Accepted: 28 Jan 2019
Published online: 11 Oct 2019 *

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