Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Residual Stress in Additive Manufactured Polymers
Submission Author:
Arthur Adeodato , RJ
Co-Authors:
Arthur Adeodato, Yago Chagas Santos Santiago de Moura, Lucas Vignoli, Daniel de Macedo Barreto Netto, Brenno Tavares Duarte, Paulo Pedro Kenedi
Presenter: Arthur Adeodato
doi://10.26678/ABCM.COBEM2023.COB2023-0962
Abstract
Additive manufacturing (AM) is a technological advancement that has significantly transformed the manufacturing industry by enabling the production of complex geometries with high precision and accuracy. This technology has found numerous applications in various fields, including aerospace, automotive, biomedical, and consumer products. However, it has been observed that internal stresses, which refer to the residual stresses, that remain in the material after printing and solidification, can significantly affect the mechanical response and reliability of the printed components. This fact can lead to unpredictable behaviors and premature damage issues. This paper aims to investigate the effects of residual stresses on the mechanical behavior of polymer-based materials, specifically poly-lactic acid (PLA) and PLA with carbon particles (PLACP). Different specimens are printed and tested in a universal material test machine, for mechanical characterization. The residual stresses are indirectly evaluated through the utilization of the slitting method. A comparison between PLA with and without carbon particles is performed to gain an insight into which combination of characteristics of the AM process is favorable to minimize the presence of the specimen’s residual stress. The results can contribute to the ongoing efforts to address the challenges associated with AM and the advances in this technology.
Keywords
Residual stresses, Additive manufacturing, Polymer Characterization, Experimental Procedures
