About this Abstract |
Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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Presentation Title |
Challenges and Opportunities in Acoustic Emission Monitoring for Quality Control of Directed Energy Deposition Additive Manufacturing |
Author(s) |
Ehsan Dehghan Niri, Anusuya Vellingiri, Steven Hespeler , Andi Wang |
On-Site Speaker (Planned) |
Ehsan Dehghan Niri |
Abstract Scope |
Acoustic Emission (AE) is a proven nondestructive testing (NDT) method that has demonstrated effectiveness in monitoring infrastructures, testing pressure vessels, and qualifying manufactured components during and after manufacturing processes. Ultrasound stress waves captured during AE monitoring, has been found to contain useful information regarding potential incidents resulting from normal or abnormal events during manufacturing processes. Despite its maturity in monitoring infrastructures, AE encounters several challenges when applied to monitoring additive processes such as directed energy deposition (DED). This article presents a summary of the challenges and opportunities associated with using AE in this context, using several examples to illustrate key points. In particular, the article highlights the strong statistical correlation between the high frequency AE signals and the AM process parameters, as well as the quality of the metallic parts produced. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |