Effect of Material type and Process Parameters on Tensile Strength of 3D Printed Specimen

Fused deposition Modelling (FDM) is a solid based 3D printing process. In this work, FDM based 3D printing process with three different raw materials and its tensile strength is investigated. Nylon, Acrylonitrile butadiene styrene (ABS) and Polyethylene Terephthalate Glycol (PETG) are used as three raw materials in this work. Tensile specimen is printed using FDM and conducted tensile strength using Universal Testing Machine (UTM). Process parameters considered raw material type, layer thickness and filament extrusion speed. Response parameter considered is tensile strength. Experiments are designed on basis of Taguchi L 9 orthogonal array for analysing the performance. The result of experiment is revealed that nylon is most significant parameter affecting the tensile strength. Also, it is noticed that 3D printed tensile specimen strength is influenced with lower value of layer thickness (0.1 mm) and extrusions speed (50 mm/sec). Analysis of Variance (ANOVA) is performed and the result indicated that layer thickness and material type are shown higher contribution.