PSI - Issue 51

ScienceDirect Structural Integrity Procedia 00 (2022) 000–000 Structural Integrity Procedia 00 (2022) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 51 (2023) 185–191

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the ICSID 2022 Organizers Abstract The applications of fused disposition modeling (FDM) 3D printed components have dramatically increased due to their efficient production time, exceptional mechanical properties, and excellent finishing quality. The challenge of studying the behavior and predicting the mechanical properties of 3D PLA (polylactic acid) fabricated parts with varying sets of printing parameters has risen with innovative and complex component shapes. Therefore, this study highlights three main printing parameters that influence the durability and integrity of the parts produced by PLA. This study illustrates the effect of three printing process variables: raster angle (RSA), layer thickness (LYT), and infill density (IFD), on two outputs: strength at fracture and strain behavior of PLA printed specimens. The study shows extensive experimental work of 27 sets of different combinations of printing processes (108 tested specimens). It also presents two quadratic mathematical models to predict: (1) the tensile strength and (2) strain at fracture of PLA-printed specimens, including the effects of the printing parameters. The prediction and experimental results are quite comparable to one another. The study concludes with an optimized set of printing parameters for higher durability and greater integrity. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the ICSID 2022 Organizers Keywords: Fused deposition modeling; 3D printing; optimization; mechanical test; PLA 1. Introduction During the last decade, the demand for layer-upon-layer printing manufacturing technology has increased immensely for design prototyping, modeling simulations, and parts production (Zhuang et al. (2022)). The main reason 6th International Conference on Structural Integrity and Durability (ICSID 2022) Tensile strength and strain behavior study and modeling of PLA printed parts with optimized AM parameters Mohammed Algarni a * a Mechanical Engineering Department, Faculty of Engineering, P.O. box 344, Rabigh 21911, King Abdulaziz University, Jeddah, Saudi Arabia Abstract The applications of fused disposition modeling (FDM) 3D printed components have dramatically increased due to their efficient production time, exceptional mechanical properties, and excellent finishing quality. The challenge of studying the behavior and predicting the mechanical properties of 3D PLA (polylactic acid) fabricated parts with varying sets of printing parameters has risen with innovative and complex component shapes. Therefore, this study highlights three main printing parameters that influence the durability and integrity of the parts produced by PLA. This study illustrates the effect of three printing process variables: raster angle (RSA), layer thickness (LYT), and infill density (IFD), on two outputs: strength at fracture and strain behavior of PLA printed specimens. The study shows extensive experimental work of 27 sets of different combinations of printing processes (108 tested specimens). It also presents two quadratic mathematical models to predict: (1) the tensile strength and (2) strain at fracture of PLA-printed specimens, including the effects of the printing parameters. The prediction and experimental results are quite comparable to one another. The study concludes with an optimized set of printing parameters for higher durability and greater integrity. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the ICSID 2022 Organizers Keywords: Fused deposition modeling; 3D printing; optimization; mechanical test; PLA 1. Introduction During the last decade, the demand for layer-upon-layer printing manufacturing technology has increased immensely for design prototyping, modeling simulations, and parts production (Zhuang et al. (2022)). The main reason 6th International Conference on Structural Integrity and Durability (ICSID 2022) Tensile strength and strain behavior study and modeling of PLA printed parts with optimized AM parameters Mohammed Algarni a * a Mechanical Engineering Department, Faculty of Engineering, P.O. box 344, Rabigh 21911, King Abdulaziz University, Jeddah, Saudi Arabia

* Corresponding author. Tel.: +966-569-440440. E-mail address: malgarni1@kau.edu.sa * Corresponding author. Tel.: +966-569-440440. E-mail address: malgarni1@kau.edu.sa

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the ICSID 2022 Organizers 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the ICSID 2022 Organizers

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the ICSID 2022 Organizers 10.1016/j.prostr.2023.10.087