Modification to a testing assembly to enable strain-life measurements in pressurized hydrogen gas
Peter Bradley, May Ling Martin, Matthew Connolly, Robert Amaro, Damian Lauria, Andrew Slifka
Strain-controlled fully-reversed fatigue testing, or strain-life testing, provides critical information on material lifetime and damage response. Strain-life data in hydrogen gas environments is missing in the literature and could provide valuable insights into hydrogen effects on the mechanical response of metals such as steels. We adapted existing hydrogen-gas-environment mechanical-testing equipment, which had been designed only for tensile loads, to accommodate the large compressive loads needed to perform strain-life testing. The considerations of these adaptations are discussed. Successful strain-life testing data was acquired from a 4130 pressure vessel steel.
, Martin, M.
, Connolly, M.
, Amaro, R.
, Lauria, D.
and Slifka, A.
Modification to a testing assembly to enable strain-life measurements in pressurized hydrogen gas, Review of Scientific Instruments, [online], https://doi.org/10.1063/5.0131798, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=935654
(Accessed September 22, 2023)