Effect of Process-Product Parameters on Strength of 3D Printed Primitive Scaffold Structures

Abstract

3D printing by FDM is latest technique, the world using for manufacturing complex geometric parts. Materials like Acrylonitrile Butadiene Styrene (ABS), Polylactic Acid (PLA) are commonly used to carry out this method. This study is based on the effect of process-product parameters on strength of 3D printed scaffold structures. 3D printed scaffold structures have a lot of applications in biomedical engineering. As there are a lot of supporting structures of cellular interactions that assists in growth & development of new tissues that replace the damaged tissues present in the body. Primitive scaffold structure is one of the Triply Periodic Minimal Surfaces (TPMS) structures. In this work, Taguchi Design of Experiment (DOE) L27 array is used, for performing number of experiments with four different process-product parameters such as raster angle, unit cell size, layer thickness & extrusion temperature having three level of input values. Optimized process parameters are calculated on the basis of these optimized parameters and a new part is fabricated which have much better compressive strength properties.