Creep deformation behaviour of PC-ABS parts processed by fused deposition additive manufacturing under different extrusion parameters

Fused deposition modeling (FDM) is a complex process for many additive manufacturing practitioners as it involves selection of a large number of intervening process conditions to produce quality products to meet customer needs and achieve competitive advantages. Understanding the effect of operating conditions on the mechanical properties of FDM printed parts is an important task as they influence the functionality of the products. The growing demand for use of Polycarbonate/Acrylonitrile-Butadiene-Styrene (PC-ABS) alloys in the production of automotive components led to the need for understanding the creep deformation performance of processed material and product under various processing parameters. This study investigates the effect of FDM process conditions on creep deformation behaviour. A systematic study through definitive screening design and statistical analysis was carried out in order to correlate the FDM processing parameters with the performance of PC-ABS alloys. In this study, the regression model was developed for the calculation of the processing parameters in FDM of PC-ABS products and gives technical information for the determination of which process parameters are the best to use for practical purposes.