Plastic flow in weak shock waves in uranium

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:5404391

Tonks, D L

Measurements of the particle velocity in weak shock waves in metals are available for a number of materials. These measurements use the laser interferometer or VISAR technique in conjunction with a plate impact experiment. These measurements are important for determining the elastic -- plastic behavior of materials at high strain rates. Strain rates up to 10{sup 7}/s are measurable with this technique, while more conventional mechanical testing machines, such as the Hopkinson bar, achieve rates only up to about 10{sup 4}/s. In this paper, the VISAR measurements of Grady on uranium are analyzed using the weak shock analysis of Wallace to extract the plastic and total strains, the deviatoric and total stresses, and the plastic strain rates. A brief error analysis of the results will be given. 7 refs.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5404391
• Report Number(s): LA-UR-92-667; CONF-9205137--1; ON: DE92011270
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
665000 -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTINIDES
ELASTICITY
ELEMENTS
EVALUATION
FLOW STRESS
INTERFEROMETRY
MECHANICAL PROPERTIES
METALS
PLASTICITY
SHOCK WAVES
STRAIN RATE
STRESSES
TENSILE PROPERTIES
URANIUM