TY - CONF
T1 - Insights into powder flow characterization methods for directed energy distribution additive manufacturing systems
AU - Brown, Stephen W.
AU - Przyjemski, Andrew G.
AU - McPherson, Matthew B.
AU - Steinberg, Jacob H.
AU - Corbin, David
AU - Reutzel, Edward Ted W.
N1 - Funding Information:
This material is based on research sponsored by the Office of Naval Research Manufacturing Technology program and its Center of Excellence, the Institute for Manufacturing and Sustainment Technologies (iMAST) at ARL Penn State. The project was contractually supported by Naval Sea Systems Command under agreement number N00024-12-D-6404.
Publisher Copyright:
© Solid Freeform Fabrication 2018: Proceedings of the 29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018. All Rights Reserved.
PY - 2020
Y1 - 2020
N2 - Powder-blown Directed Energy Distribution Additive Manufacturing systems often feed powdered metal into a melt pool generated by a laser. As the laser is moved, the melt pool solidifies, leaving behind a deposit. Such depositions may be built up into full components or used to add features on existing components. Distribution and uniformity of the powder flow is critical to achieve uniform and predictable depositions. For example, small deviations at the minute-level (cf. the resolution limit of the deposition) can propagate to gross deviations at the component-level. Meanwhile, large deviations in the powder flow can be yet unobservable to the naked eye, but produce catastrophic effects within small depositions. Such depositions are common to repair applications targeted at ARL Penn State, wherein relatively small deposits are created on larger, critical components. Novel and re-purposed OEM tools are compared to study these powder flow behaviors, providing new insights into process variability.
AB - Powder-blown Directed Energy Distribution Additive Manufacturing systems often feed powdered metal into a melt pool generated by a laser. As the laser is moved, the melt pool solidifies, leaving behind a deposit. Such depositions may be built up into full components or used to add features on existing components. Distribution and uniformity of the powder flow is critical to achieve uniform and predictable depositions. For example, small deviations at the minute-level (cf. the resolution limit of the deposition) can propagate to gross deviations at the component-level. Meanwhile, large deviations in the powder flow can be yet unobservable to the naked eye, but produce catastrophic effects within small depositions. Such depositions are common to repair applications targeted at ARL Penn State, wherein relatively small deposits are created on larger, critical components. Novel and re-purposed OEM tools are compared to study these powder flow behaviors, providing new insights into process variability.
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M3 - Paper
AN - SCOPUS:85084960754
SP - 1976
EP - 1988
T2 - 29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018
Y2 - 13 August 2018 through 15 August 2018
ER -