Applying Steinberg's model to the Hugoniot elastic limit of porous boron carbide specimens

Plate-impact experiments were performed on boron carbide specimens, having different porosities, in order to measure their Hugoniot elastic limit (HEL) values. The measurements were performed with commercial manganin gauges embedded at the back surface of the specimen and backed by a thick Plexiglas...

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Bibliographic Details
Published in:Journal of applied physics 1991-06, Vol.69 (11), p.7890-7891
Main Authors: BRAR, N. S, ROSENBERG, Z, BLESS, S. J
Format: Article
Language:English
Subjects:
360203 - Ceramics, Cermets, & Refractories- Mechanical Properties
BORON CARBIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
COMPRESSION
Condensed matter: structure, mechanical and thermal properties
ELASTICITY
Elasticity, elastic constants
Exact sciences and technology
MATERIALS SCIENCE
Mechanical and acoustical properties of condensed matter
MECHANICAL PROPERTIES
Mechanical properties of solids
Physics
POROSITY
TENSILE PROPERTIES
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Summary:Plate-impact experiments were performed on boron carbide specimens, having different porosities, in order to measure their Hugoniot elastic limit (HEL) values. The measurements were performed with commercial manganin gauges embedded at the back surface of the specimen and backed by a thick Plexiglas disk. The measured values show an almost linear decrease in the HEL values between 194 kbar (For the fully dense material) to 96 kbar for a specimen with 16.3% porosity. These values were compared with a theoretical model [suggested by D. Steinberg (LLL report LLL-UCID-16946, 1975)] which accounts for the dependence of the HEL on porosity, and the agreement is shown to be good.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.347524