About this Abstract |
Meeting |
Additive Manufacturing Benchmarks 2022 (AM-Bench 2022)
|
Symposium
|
Additive Manufacturing Benchmarks 2022 (AM-Bench 2022)
|
Presentation Title |
Porosity Characterization of BinderJet Additive Manufacturing Parts via Ultrasonic Methods |
Author(s) |
Olivia J. Cook, Nancy Huang, Robert Smithson, Christopher M Kube, Allison M Beese, Andrea P Argüelles |
On-Site Speaker (Planned) |
Andrea P Argüelles |
Abstract Scope |
Binder jet metallic additive manufacturing (AM) is a popular alternative to fusion-based metal AM processes. However, binder jetting is prone to porosity, which decreases the adoption of binder jetted parts. To bring insight to the binder jet process, ultrasonic testing is applied to generate spatially dependent ultrasonic wave speed and attenuation measurements and help characterize and map porosity. Ultrasonic testing was conducted in an immersion system on binder jetted stainless steel and stainless steel infiltrated with bronze. X-ray computed tomography was performed to provide a ground truth assessment of porosity. Maps of wave speed and attenuation displayed a strong correlation to the X-ray CT pore reconstructions. As expected, the ultrasonic wave speed and attenuation were found to be sensitive to average pore size and volume fraction. This work supports the utility of using ultrasonic testing to help develop and improve the binder jet AM process and corresponding parts. |
Proceedings Inclusion? |
Undecided |