Comparison of Young’s Modulus at Different Building Orientations and Test Methods

This study investigates the comparison of Young's Modulus value from tensile and three-point bendingBending methods for two build orientations (0° and 90° build angles) of ABS material. Twenty specimens were printed using FDM 3D printer with parameters of 200 μm layer thickness, solid print strength and cross print pattern for each method. The tensile experiment was following ASTM D638, and the three-point bendingBending experiment was also following ASTM D790 to find the Young’s Modulus value. The results obtained from both experiments were compared to each other as well as to theoretical and standard values. The results show that highest Young’s modulus value was from the three-point bendingBending method with 0° build angle orientation. This is due to the different ways of loading are used to test mechanical properties and orientation of 3D printing build angle.