Enhancing the Tensile Strength of FDM Products through Optimal Adjustment of Process Parameters

Abstract

Additive manufacturing is considered one of the most prominent technologies of the Fourth Industrial Revolution. It is used to produce three-dimensional models through the successive deposition of semi-molten material layers. This technology is characterized by reduced material waste and high design flexibility, enabling the fabrication of complex geometries that are difficult to achieve Using conventional manufacturing methods. Fused Deposition Modeling (FDM) is among the most widely used techniques due to its low cost and ease of implementation.This study aims to analyze the effect of key process parameters—layer thickness, printing speed, and extrusion temperature—on the tensile strength of FDM-manufactured parts. A statistical approach was adopted for experimental design and data analysis, allowing the evaluation of both individual and interaction effects of these parameters and the determination of optimal values. A mathematical model was also developed to predict process behavior.The results indicate that layer thickness and extrusion temperature have the most significant influence on tensile strength, while printing speed shows a relatively smaller effect, though it remains important in improving interlayer bonding.