Use of pressurized eccentric tubes to study the effect of hydrostatic stress on swelling

Author: Wolfer, W. G.
Published: United States : [publisher not identified], 1977
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1977
Physical Description: microfiche : negative ; 11 x 15 cm
Additional Creators: Reiley, T. C.

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Summary

A technique for measuring the effect of hydrostatic stress on radiation-induced swelling is presented. This technique is based on the nonuniform hydrostatic stress that arises when an eccentric tube (a tube with inner and outer surfaces having dissimilar centers of revolution) is internally pressurized. The elastic analyses of the thin- and thick-walled eccentric tube are given. The elastic stress state is allowed to relax plastically, based on a constitutive law for deformation during neutron irradiation. In this case, the constitutive law contains a linearly stress-dependent deviatoric strain rate and a dilatation rate that is linearly dependent on hydrostatic stress. Emphasis is placed on the specimen design and experimental procedure for in-reactor experiments in which the coefficient relating hydrostatic stress and swelling is sought. It is shown that, for the 316L stainless steel specimens placed in EBR-II, we may expect that any appreciable effect of hydrostatic stress on swelling will be observable through changes in specimen curvature.

Report Numbers

ORNL/TM-5780

Other Subject(s)

Collection

U.S. Atomic Energy Commission depository collection.

Note

DOE contract number: W-7405-ENG-26
OSTI Identifier 7213412
Research organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States).

Funding Information

Sponsored by US Energy Research and Development Administration (ERDA).

View MARC record | catkey: 47074788