Failure Analysis and Quality Assessment of 3D Printed ABS Parts Available to Purchase

The work aims to study the performance of 3D-printed parts under In-Plane and Out-of-Plane shear stresses. The test articles are made from Acrylonitrile Butadiene Styrene (ABS) by the 3D printing process (Fused Deposition Modeling - FDM). The testing procedures have been performed according to the ASTM D3846–02 method for defining the In-Plane shear strength while the ASTM D5379 method has been used for determining the Out-of-Plane shear properties. The statistical distribution functions were determined for both test data. Failure analysis has been performed for determining the Probability Density Function, the Survival Function, and the Hazard Function. The probability of failure at a certain stress level has been determined. A comparison between parts manufactured using the 3D printer and the commercially manufacturing process has been performed using the nonparametric two-sample Kolmogorov-Smirnov normality test of the underlying distributions and also supported by Mann-Whitney test.