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Fatigue Resistance of Liquid-assisted Self-repairing Aluminum Alloys Reinforced with Shape Memory AlloysA self-repairing aluminum-based composite system has been developed using a liquid-assisted healing theory in conjunction with the shape memory effect of wire reinforcements. The metal-metal composite was thermodynamically designed to have a matrix with a relatively even dispersion of a low-melting eutectic phase, allowing for repair of cracks at a predetermined temperature. Additionally, shape memory alloy (SMA) wire reinforcements were used within the composite to provide crack closure. Investigators focused the research on fatigue cracks propagating through the matrix in order to show a proof-of-concept Shape Memory Alloy Self-Healing (SMASH) technology for aeronautical applications.
Document ID
20140013299
Document Type
Technical Memorandum (TM)
Authors
Wright, M. Clara
(NASA Kennedy Space Center Cocoa Beach, FL, United States)
Manuel, Michele
(Florida Univ. Gainesville, FL, United States)
Wallace, Terryl
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
November 3, 2014
Publication Date
September 1, 2013
Subject Category
Composite Materials
Report/Patent Number
NASA/TM-2013-216629
NTR KSC-13806
Funding Number(s)
CONTRACT_GRANT: NNX12AP71A
Distribution Limits
Public
Copyright
Public Use Permitted.
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