Insights into powder flow characterization methods for directed energy distribution additive manufacturing systems

Stephen W. Brown, Andrew G. Przyjemski, Matthew B. McPherson, Jacob H. Steinberg, David Corbin, Edward Ted W. Reutzel

Research output: Contribution to conferencePaperpeer-review

Abstract

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.

Original languageEnglish (US)
Pages1976-1988
Number of pages13
StatePublished - 2020
Event29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018 - Austin, United States
Duration: Aug 13 2018Aug 15 2018

Conference

Conference29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018
CountryUnited States
CityAustin
Period8/13/188/15/18

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Fingerprint Dive into the research topics of 'Insights into powder flow characterization methods for directed energy distribution additive manufacturing systems'. Together they form a unique fingerprint.

Cite this