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Deformation Response and Life of Metallic CompositesThe project was initially funded for one year (for $100,764) to investigate the potential of particulate reinforced metals for aeropropulsion applications and to generate fatigue results that quantify the mean stress effect for a titanium alloy matrix material (TIMETAL 21S). The project was continued for a second year (for $85,000) to more closely investigate cyclic deformation, especially ratcheting, of the titanium alloy matrix at elevated temperature. Equipment was purchased (for $19,000) to make the experimental program feasible; this equipment included an extensometer calibrator and a multi-channel signal conditioning amplifier. The project was continued for a third year ($50,000) to conduct cyclic relaxation experiments aimed at validating the elastic-viscoelastic-viscoplastic model that NASA GRC had developed for the titanium alloy. Finally, a one-year no cost extension was granted to enable continued analysis of the experimental results and model comparisons.
Document ID
20050210037
Acquisition Source
Headquarters
Document Type
Contractor or Grantee Report
Authors
Lissenden, Cliff J. (Pennsylvania State Univ. University Park, PA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2005
Subject Category
Metals And Metallic Materials
Funding Number(s)
CONTRACT_GRANT: NCC3-848
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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