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Testing Tensile and Shear Epoxy Strength at Cryogenic TemperaturesThis paper covers cryogenic, tensile testing and research completed on a number of epoxies used in cryogenic applications. Epoxies are used in many different applications; however, this research focused on the use of epoxy used to bond MLI standoffs to cryogenic storage tanks and the loads imparted to the tank through the MLI. To conduct testing, samples were made from bare stainless steel, aluminum and primed aluminum. Testing involved slowly cooling test samples with liquid nitrogen then applying gradually increasing tensile loads to the epoxy. The testing evaluated the strength and durability of epoxies at cryogenic temperatures and serves as a base for future testing. The results of the tests showed that some epoxies withstood the harsh conditions while others failed. The two epoxies yielding the best results were Masterbond EP29LPSP and Scotch Weld 2216. For all metal surfaces tested, both epoxies had zero failures for up to 11.81 kg of mass.
Document ID
20170009145
Document Type
Presentation
Authors
Alberts, S. J. (NASA Glenn Research Center Cleveland, OH, United States)
Doehne, C. J. (HX5 Sierra, LLC Cleveland, OH, United States)
Johnson, W. L. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
September 28, 2017
Publication Date
July 10, 2017
Subject Category
Fluid Mechanics and Thermodynamics
Report/Patent Number
GRC-E-DAA-TN44281
Meeting Information
2017 Cryogenic Engineering Conference(Madison, WI)
Funding Number(s)
CONTRACT_GRANT: NNC15BA02B
WBS: WBS 448887.04.03.03
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
multilayer insulation
Structural attachments
epoxy

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