![]() Flexural and tensile poly-lactic acid specimens are printed according to ASTM standards D790 and D638, respectively, and thoroughly analyzed based on the surface morphological analysis to characterize defects. In addition, CRITIC embedded WASPAS is adopted to optimize the parts' mechanical attributes and overcome the defects. Modeling of the 3D printing process parameters such as layer thickness, printing speed, and printing temperature is carried out through L27 orthogonal array using Taguchi approach. The current study is a progress towards understanding the evolution of processing defects and the correlation of mechanical behavior with the process parameters. The industry is trying to develop certification to better control variations in mechanical attributes. The additive manufacturing technique of material extrusion has challenge of excessive process defects and not achieving the desired mechanical properties.
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