In-situ stress measurement comparison of aluminum pressure vessels under high working pressures

Issue title: International Workshop for Sample Environment at Scattering Facilities Gettysburg, PA, USA, September 19–22, 2016

Guest editors: Yamali Hernandez, Paolo Imperia and Eddy Lelièvre-Berna

Article type: Research Article

Authors: Leão, Juscelino B.^{; *} | Milner, Justin

Affiliations: NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA

Correspondence: [*] Corresponding author. E-mail: [email protected].

Abstract: The results of residual stress measurements on autofrettage monoblock pressure vessels before and after 100+ pressure and temperature cycles; and, for the first time, in-situ stress measurements on a vessel under high working pressures as measured by neutron diffraction is presented here. High-pressure vessel design depends heavily on finite element analysis (FEA) which, though useful, requires more data to execute a comparison of the stresses encountered in a working pressure vessel. In-situ pressure stress measurements by neutron diffraction may provide useful data for refinements in FEA calculations and determine vessel pressure/temperature cycling behavior.

Keywords: Hydrostatic pressure, neutron scattering, stress and strain, autofrettage

DOI: 10.3233/JNR-170040

Journal: Journal of Neutron Research, vol. 19, no. 1-2, pp. 65-72, 2017