Thermally-driven morphing with high temperature composites

Eric N Eckstein, Paul M Weaver, Michael C. Halbig

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

The thermal expansion mismatch between heat-resisting metals and high-temperature composite materials is explored as a method of achieving thermally-driven morphing in elevated-temperature environments, with an eye towards applications in variable-geometry hot structures in gas turbine engines. Three concepts are presented and demonstrated. The first thermal morphing system is a bimorph laminate which exploits the CTE mismatch between a titanium metal matrix composite and its parent titanium matrix material. The second concept is similar to the first, but uses a diffusion-bonded austenitic stainless steel alloy as the high expansion layer. The third concept utilizes a carbon fiber, silicon carbide matrix ceramic matrix composite joined to a stainless steel skin in a trailing-edge flap arrangement. Furnace-based experiments of cantilever-mounted specimens are performed to evaluate the displacement response of the metal-matrix and ceramic-matrix concepts at temperatures up to 606°C and 1035°C, respectively.

Original languageEnglish
Title of host publication57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Number of pages18
ISBN (Electronic)9781624103926
DOIs
Publication statusPublished - 4 Jan 2016
Event57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2016 - San Diego, United States
Duration: 4 Jan 20168 Jan 2016

Conference

Conference57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2016
CountryUnited States
CitySan Diego
Period4/01/168/01/16

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