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Failure analysis of a Stirling engine heat pipeFailure analysis was conducted on a heat pipe from a Stirling Engine test rig which was designed to operate at 1073 K. Premature failure had occurred due to localized overheating at the leading edge of the evaporator fin. It was found that a crack had allowed air to enter the fin and react with the sodium coolant. The origin of the crack was found to be located at the inner surface of the Inconel 600 fin where severe intergranular corrosion had taken place.
Document ID
19890010856
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Moore, Thomas J.
(NASA Lewis Research Center Cleveland, OH, United States)
Cairelli, James E.
(NASA Lewis Research Center Cleveland, OH, United States)
Khalili, Kaveh
(Stirling Thermal Motors, Inc., Ann Arbor MI., United States)
Date Acquired
September 5, 2013
Publication Date
March 1, 1989
Subject Category
Metallic Materials
Report/Patent Number
NASA-TM-101418
E-4516
NAS 1.15:101418
Accession Number
89N20227
Funding Number(s)
PROJECT: RTOP 586-01-11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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