9–13 Jul 2017
Monona Terrace Community and Convention Center
US/Central timezone

Epoxy Tensile Testing at Cryogenic Temperatures

11 Jul 2017, 13:00
2h
Exhibit Hall AB

Exhibit Hall AB

Speaker

Wesley Johnson (NASA Glenn Research Center)

Description

This 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.

Authors

Wesley Johnson (NASA Glenn Research Center) Samantha Alberts (NASA Glenn Research Center) Conrad Doehne (NASA Glenn Research Center)

Presentation materials