Identifying Elastic Constants for PPS Technical Material When Designing and Printing Parts Using FDM Technology

Materials

Jone Retolaza¹  JoseLuis Gómez²  Gorka Díez²  Rubén Ansola³ 

[1] Bilbao Industry IX Accenture Astondo Bidea Edificio 602 Parque Tecnológico de Bizkaia, 480170 Derio, Spain;Department of Materials GAIKER Technology Center Parque Tecnológico de Bizkaia Edificio 202, 48170 Zamudio, Spain;Department of Mechanical Engineering, Faculty of Engineering University of the Basque Country Alda, Urquijo s/n, 48013 Bilbao, Spain;

关键词: material characterization;    elastic constants;    anisotropic;    fused deposition modeling;    finite element analysis;    mechanical testing;   

DOI  :  10.3390/ma14051123

来源: DOAJ

【 摘 要 】

This paper introduces a methodology to study the anisotropic elastic constants of technical phenylene polysulfide thermoplastic (PPS), printed using fused deposition modeling (FDM) in order to provide designers with a guide to achieve the required mechanical properties in a printed part. The properties given by the manufacturer are usually taken from injected samples and these are not the real properties for printed parts. Compared to other plastic materials, PPS offers higher mechanical and thermal resistance, lower moisture absorption, higher dimensional stability, is highly resistant to chemical attacks and environmental aging, and its fireproof performance is good. One of the main difficulties presented when calculating and designing for FDM printing is that printed parts present anisotropic behavior i.e., they do not have the same properties in different directions. Haltera-type samples were printed in the three manufacturing directions according to optimum parameters for material printing, aimed at calculating the anisotropic matrix of the material. The samples were tested in order to meet standards and values for elastic modulus, shear modulus and tensile strength were obtained, using Digital Image Correlation System to measure the deformations. An approximated transversally isotropic matrix was defined using the obtained values. The fracture was analyzed using SEM microscopy to check whether the piece was printed correctly. Finally, the obtained matrix was validated by a flexural test and a finite element simulation.

【 授权许可】

Unknown