About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Nondestructive Evaluation of Porosity in Binder Jet SS316L Components using Ultrasound and X-ray Computed Tomography |
Author(s) |
Olivia J. Cook, Nancy Huang, Robert L.W. Smithson, Christopher M. Kube, Allison M. Beese, Andrea P. Argüelles |
On-Site Speaker (Planned) |
Olivia J. Cook |
Abstract Scope |
The progression of additive manufacturing technologies hinges on their ability to produce defect-free parts with ideal properties. Binder jet printing (BJP) has many advantages over fusion-based AM methods, such as no thermal cycling, increased geometric freedom, and lower energy consumption. However, part porosity has been shown to compromise properties in BJP components. In this study, NDE methods, which are well suited to evaluate components containing spatially varying characteristics, were applied in this study to examine porosity. X-ray computed tomography was used to obtain 3D reconstructions of the pores present in binder jet printed SS316L tensile samples. Subsequently, samples were scanned in an ultrasonic immersion system, and wave speed and attenuation spatial maps were extracted. These ultrasonic testing results were analyzed against XCT results to explore deeper linkages between pore morphology and wave speed and attenuation beyond the known sensitivity to the volume fraction of porosity. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |