Experimental investigation on flexural properties of FDM processed Nylon 12 parts using RSM

Fused deposition modelling (FDM) is one of the leading additive manufacturing technologies for producing plastic parts in a layer by layer manner d from a digital file. The actual levels of processed parameters of the manufactured parts using fused deposition modelling (FDM) are considered the major obstruction to optimize the mechanical properties. As a result of the FDM parameters and the interaction among them the parts' mechanical properties of the manufactured parts are affected, thus, many experiments have been dedicated to find the proper parameter setting. This paper presents a study on the influence of three FDM process parameters (air gap, raster angle, and build orientation) on the flexural strength of the FDM Nylon 12 manufactured parts. Response surface methodology (RSM) is used as a statistical technique to analyse results. Analysis of variance (ANOVA) method is also used to test the significance of parameters. The results indicate that the air gap and raster angle are the most influential parameters affecting the flexural strength.