Repeatability in performance of micro cooling geometries manufactured with laser powder bed fusion

Kathryn L. Kirsch, Jacob C. Snyder, Curtis K. Stimpson, Karen A. Thole, Dominic Mongillo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations

Abstract

Stringent regulations on aircraft engine emissions introduce a series restrictions on weight, size, and durability of all engine components to increase efficiency. In the hot section of a gas turbine engine, for example, airfoil internal cooling schemes must provide more efficient cooling with minimal mass flow. Such a requirement drives the cooling channels' size to the micro scale. One new tool currently being explored to achieve industry-required efficiencies can be found in advanced manufacturing techniques, such as laser powder bed fusion. However, as with all new technologies, the laser powder bed fusion process must be thoroughly investigated, fully understood, and achieve reliable and repeatable results before the process is widely implemented for gas turbine airfoils. This paper provides experimental results on the dimensions, as well as pressure loss and heat transfer performance, of microchannels manufactured using laser powder bed fusion; the microchannels mimic those suitable for airfoil internal cooling. Variability in the performance will be quantified for different builds, as well as for different materials.

Original languageEnglish (US)
Title of host publication53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105111
DOIs
StatePublished - 2017
Event53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017 - Atlanta, Georgia
Duration: Jul 10 2017Jul 12 2017

Publication series

Name53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017

Other

Other53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017
Country/TerritoryGeorgia
CityAtlanta
Period7/10/177/12/17

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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