Iranian Journal of  Manufacturing Engineering

Iranian Journal of Manufacturing Engineering

Experimental investigation of the role of additive manufacturing parameters on the mechanical properties of PETG parts in the FDM process

Document Type : Original Article

Authors
1 Assistant Professor, Department of Engineering and Flight, Imam Ali University, Tehran, Iran
2 MSc Graduate, Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
Abstract
Additive manufacturing technologies have seen significant advancements in recent decades. Among these methods, Fused Deposition Modeling has garnered considerable attention due to its ability to produce complex parts at a reasonable cost. This research investigates the impact of process parameters on the mechanical properties of parts made from glycol-modified polyethylene terephthalate in this process. . Three main parameters were studied: layer thickness, feed rate, and infill density. Standard specimens were produced for tensile and flexural tests. Analysis of Variance was used to assess the impact of each parameter. The results indicated that layer thickness had the greatest effect on mechanical properties compared to the other parameters, contributing 56% to tensile strength and 37.98% to flexural strength. To achieve optimal tensile properties, both layer thickness and feed rate should be minimized, while infill density should be high. For flexural properties, a low layer thickness, moderate feed rate, and low infill density yielded better results. This study highlights the importance of optimizing process parameters in the 3D printing of glycol-modified polyethylene terephthalate and can contribute to improving the quality and performance of manufactured parts across various industries and applications.
Keywords

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