Issue 63

O. Aourik et alii, Frattura ed Integrità Strutturale, 63 (2023) 246-256; DOI: 10.3221/IGF-ESIS.63.19

Analysis of the resistance to crack propagation in SENT test specimens printed in ABS using parallel or crossed filaments between layers

O. Aourik, A. Chouaf, M. Othmani Hassan II University, National School of Electricity and Mechanics, Casablanca, Morocco oumaima.aourik@ensem.ac.ma, http://orcid.org/0000-0002-7451-5213 a.chouaf@ensem.ac.ma, http://orcid.org/0000-0003-1765-6762 mourad.othmani@ensem.ac.ma, http://orcid.org/0000-0001-8601-8073 A BSTRACT . Additive manufacturing techniques continue to develop and cover all industrial fields. However, the performances of aspect and mechanical behavior of the parts obtained by this process remain to be mastered and are still the subject of current research works. Among these performances, the one corresponding to the resistance to the propagation of cracks. In order to improve this very interesting property in various industrial fields, it is desirable to master the understanding of crack propagation in this type of structure obtained by 3D printing. The objective of this paper is to analyze and understand the effect of the adopted raster angle on the crack propagation in SENT specimens obtained by FDM in ABS (Acrylonitrile Butadiene-Styrene). Two approaches were developed: one is experimental to determine the critical stress intensity factor K IC and the other is numerical to predict the possible paths of crack propagation. K EYWORDS . Additive Manufacturing, FDM, Raster Angle, ABS, Crack, Numerical Simulation.

Citation: Aourik, O., Chouaf, A., Othmani, M., Analysis of the resistance to crack propagation in SENT test specimens printed in ABS using parallel or crossed filaments between layers, Frattura ed Integrità Strutturale, 63 (2023) 246-256.

Received: 21.07.2022 Accepted: 30.09.2022 Online first: 10.12.2022 Published: 01.01.2023

Copyright: © 2023 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

I NTRODUCTION

ver the past decade, additive manufacturing (AM) has attracted considerable attention in the development and manufacturing industries. We can mention the medical, engineering, aerospace, and automotive fields [1-4]. Despite the progress that additive manufacturing methods are experiencing, in addition to significant technological and material advances, the quality of printed objects still needs to be improved. Indeed, by this process, which involves many manufacturing parameters, it is very difficult to obtain a part with the desired mechanical performance. This is due to the lack of control of the multi-physical interactions of these parameters [5-12]. Given the complexity of the problem, it is essential to make an optimal choice of a particular permutation of these parameters for a given performance. It is in this sense that many researchers have developed their studies on the qualities of printed parts. Among these works is that of Turner et al, who addressed the relationship between printing parameters O

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