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Wire and Cable Cold Bending TestOne of the factors in assessing the applicability of wire or cable on the lunar surface is its flexibility under extreme cold conditions. Existing wire specifications did not address their mechanical behavior under cold, cryogenic temperature conditions. Therefore tests were performed to provide this information. To assess this characteristic 35 different insulated wire and cable pieces were cold soaked in liquid nitrogen. The segments were then subjected to bending and the force was recorded. Any failure of the insulation or jacketing was also documented for each sample tested. The bending force tests were performed at room temperature to provide a comparison to the change in force needed to bend the samples due to the low temperature conditions. The results from the bending tests were plotted and showed how various types of insulated wire and cable responded to bending under cold conditions. These results were then used to estimate the torque needed to unroll the wire under these low temperature conditions.
Document ID
20100008936
Document Type
Contractor Report (CR)
Authors
Colozza, Anthony
(Analex Corp. Cleveland, OH, United States)
Date Acquired
August 25, 2013
Publication Date
February 1, 2010
Subject Category
Structural Mechanics
Report/Patent Number
E-17130
NASA/CR-2010-216086
Funding Number(s)
WBS: WBS 342806.06.03.03
CONTRACT_GRANT: NNC07E252T-8
Distribution Limits
Public
Copyright
Public Use Permitted.
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