Influence of layer thickness and 3D printing direction on tensile properties of ABS material

The 3D printing process is a kind of additive manufacturing, that the basic principle of this process is adding material layer by layer to form a product. The purpose of this research was to study tensile properties of 3D printing ABS (Acrylonitrile Butadiene Styrene) material with axial and lateral direction. The specimen was printed according to ASTM D 632-02 by layer thickness variation around 0.1 mm, 0.2 mm and 0.3 mm. Moreover, three specimens were made for each printing axial and lateral direction. Tensile test was performed using Zwick Roell Series Z 021 machine. Then, the fracture surface was studied by SEM testing used ZEOL JSM-6510LA. Based on the research from 6 variation layer of 3D printing, the optimal result was found on the axial direction of 0.3 mm thickness layer with tensile strength 30.60 MPa and able to receive maximum load 551.13 N. The lateral direction of 0.3 mm thickness layer has tensile strength 19.42 MPa and able to receive maximum load 349.12 N. The voids were seen at the fracture surface of specimen.