Finite element analysis of 3D-printed acrylonitrile styrene acrylate (ASA) with ultrasonic material characterization

• Main Authors: Yap, Yee Ling, Toh, William, Koneru, Rahul, Chua, Zhong Yang, Lin, Kehua, Yeoh, Kirk Ming, Lim, Chin Mian, Lee, Jia Shing, Nur Adilah Plemping, Lin, Rongming, Ng, Teng Yong, Chan, Ian Keen, Guang, Huanyu, Chan, Brian Wai Yew, Teong, Soo Soon, Zheng, Guoying
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Mechanical engineering::Mechanics and dynamics; Finite Element Modeling; Additive Manufacturing
• Online Access: https://hdl.handle.net/10356/139977
• Institution: Nanyang Technological University

This paper investigates the orthotropic properties of Fused Deposition Modeling (FDM)-printed Acrylonitrile Styrene Acrylate (ASA) material with different raster configurations. The elastic properties were determined using a non-destructive ultrasonic technique. This technique allows us to deduce the orthotropic elastic constants from the material density and the velocities of the longitudinal and shear waves propagating through the material along different directions. Tensile tests were performed in addition to ultrasonic tests to obtain the yield properties of the ASA material and to validate the elastic constants determined by the ultrasonic tests, which have shown very close correspondence. Finally, numerical verification was performed by comparing the experimental results of the three-point and four-point bending tests with the finite element simulation results which have as input the material properties from the ultrasonic testing. The simulation results have shown excellent agreement with the experimental results, implying that the material properties obtained from the ultrasonic testing were highly accurate comparing to the actual orthotropic elastic properties of the 3D-printed ASA material.