Comparison of Young’s Modulus determination from Ultrasonic Testing and Three-Point Bending Testing

Abstract

This study investigates the comparison of Young’s modulus value from ultrasonic testing and three-point bending testing. Five specimens from ABS material were created using FDM 3D printer with parameters of 200 μm layer thickness, solid print strength, and cross print pattern. Five specimens from stainless steel 316 were fabricated from conventional plate using waterjet cutting machine. Ultrasonic tests were done on each sample from ABS and stainless steel 316 by following ASTM A578. The three-point bending experiments of ABS and stainless steel 316 specimens were following ASTM D790, and ASTM E290, respectively. Ultrasonic testing and three-point bending testing were done on both materials to find the Young’s Modulus values. The results obtained from both experiments were compared to each other as well as to a standard value. The results show that Young’s modulus values from ultrasonic testing are more comparable to the standard value than that from three-point bending testing. These are due to build orientation of ABS, and grain size of stainless steel 316 which have some effect on Young’s Modulus values.