Accession Number : AD0780915

Title :   The Mechanical Response of a Porous Uranium Alloy.

Descriptive Note : Final rept. Dec 72-Jul 73,


Personal Author(s) : Shipman,F. H. ; Johnson,J. N. ; Green,S. J.

Report Date : APR 1974

Pagination or Media Count : 55

Abstract : Experimental and theoretical results are presented for the mechanical response of a porous uranium alloy subject to quasistatic uniaxial strain and hydrostatic compression. Two states of porosity were studied; one very small (about 1%) and the other somewhat larger (about 13%). Experimental techniques previously employed on geological materials are used to obtain all principal stress and strain components. Also, longitudinal elastic wave speeds obtained by ultrasonic techniques are presented as a function of initial sample density. The stress-strain behavior of this material is porosity dependent and no distinct elastic limit or crushup strength is observed. An analytical model that considers both the mean normal stress and the deviatoric stress influence on the crushup process is developed for uniaxial-strain and hydrostatic loading conditions. (Modified author abstract)

Descriptors :   *Uranium alloys, *Porous metals, Stress strain relations, Ultrasonic tests, Porosity, Density, Triaxial stresses

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE