|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing Fatigue and Fracture V: Processing-Structure-Property Investigations and Application to Qualification
||Characterization of 3D-printed Metals with Ultrasonic Technique
||Terence Costigan, Ping-Chuan Wang, Robert Van Pelt, Aaron Nelson
|On-Site Speaker (Planned)
Additive manufacturing (AM) of metals is rapidly finding applications in various industries, but certain disadvantages inherited in AM prevent it from becoming widely adopted, including surface roughness, lack of isotropic densification and dimension accuracy, etc. Such imperfections have significant impact on product performance and reliability. The goal for this research is to develop a characterization means using ultrasonic excitation to investigate how properties and fatigue behavior of AM parts depend on fabrication factors such as density and printing orientation. A test methodology being developed employs a pair of conical stainless steel specimens with piezoelectric transducers sandwiched in between to induce vibration. In this presentation, feasibility of the test and specimen design will be demonstrated with finite element modeling. Experimental results will be summarized by comparing specimens prepared by AM with several printing conditions and by traditional machining process. The implication of using ultrasonic characterization of AM structures will be discussed.
||Additive Manufacturing, Characterization, Iron and Steel