Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
COMPARATIVE STUDY OF MECHANICAL PROPERTIES OF POLYAMIDE 12 MANUFACTURED BY ADDITIVE MANUFACTURING AND CONVENTIONAL PROCESSES
Submission Author:
Rodrigo Coelho , BA , Brazil
Co-Authors:
Joyce Mara Brandão Maia, Bruno Caetano dos Santos Silva, Luã Fonseca Seixas, Alexandre Dourado, Pollyana Cardoso, Valter Estevão Beal, Rodrigo Coelho
Presenter: Joyce Mara Brandão Maia
doi://10.26678/ABCM.COBEM2023.COB2023-2119
Abstract
The benefits of additive manufacturing (AM), such as design customization, weight reduction and reduced lead time, drew a lot of attention from the industry, being used by various segments such as aerospace, automotive and in applications in the health sector. Among the existing AM technologies, those based on Powder Bed Fusion (PBF) principles, can process different classes of materials including thermoplastic polyurethane (TPU), polypropylene (PP) and polyamide 12 (PA12), being the latter the most used polymer in PBF technologies. This is mainly because the wide range between its initial melting and their crystallization temperature. The literature reveals many research comparing different AM technologies used to print PA12 and only few studies to evaluate AM with conventional processes. This work aims to evaluate the mechanical properties of PA12 parts produced by AM HP Multi Jet Fusion (HP-MJF), which is a PBF based technology, and to compare the results with the literature data from conventional processed parts. The specimens for tensile and impact properties were printed on the diagonals of the vat polymerization with an inclination angle of 20° and a distance of 7 mm between each other, as per recommendations of the technology developer and according to data from studies of the same nature. The results reveal that AM parts yields properties equivalent to those obtained upon conventional processing which brings AM as an alternative to the application of conventional processes.
Keywords
Powder bed fusion, Conventional processes, Polyamide 12, Mechanical Properties
