About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Applications
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Presentation Title |
Identification of Defects in Additively Manufactured Microlattices |
Author(s) |
Nicholas Calta, Jean Baptiste Forien, Gabe Guss, Philip Depond, Manyalibo Matthews |
On-Site Speaker (Planned) |
Jean Baptiste Forien |
Abstract Scope |
Effective process monitoring for defect detection remains a significant challenge in laser powder bed fusion (LPBF) additive manufacturing. This is a particularly important goal during the fabrication of highly complex parts that LPBF is uniquely suited to produce, because the post-build inspection of such parts is extremely challenging. Here, we use high speed pyrometry to measure thermal emission from the melt to identify defects in microlattice builds. We illustrate that specific thermal signatures can be successfully used to identify engineered defects in microlattices build, and discuss the uncertainties associated with this approach. The applicability of this approach to identifying process error-derived defects will also be discussed.
Prepared by LLNL under Contract DE-AC52-07NA27344. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |