Particle velocity and stress gage measurements in spherical diverging flow

Conference · Sun Mar 01 04:00:00 EST 1987

OSTI ID:6247791

Larson, D B; Stout, R B

Chemical explosions were used to generate spherically diverging stress waves in polymethylmethacrylate (PMMA). Piezoresistance gages of several different designs were placed in the PMMA radially from the spherical energy source. Two basic types of piezoresistance gages were used. One type was placed on backing material and then glued directly to the PMMA while the other type was placed on backing material and then enclosed in a fluid cavity which was attached to the PMMA. Gages were oriented normal to the direction of the shock front. In order to interpret the piezoresistance gage measurements and to obtain a complete set of data for numerical calculations, particle velocity was also measured at several radial positions from the explosion. In addition to different ytterbium gage designs, a triple material gage that contained ytterbium, manganin, and constant an foils was tested. This gage provided three independent resistivity history signals as output, one from each material. Results from an analysis of piezoresistance gage response in a multicomponent stress-strain field compared well with the experimental measurements for the triple material gage. 23 refs., 18 figs., 4 tabs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6247791
• Report Number(s): UCRL-96320; CONF-870637-4; ON: DE87007333
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800 -- Engineering-- Electronic Circuits & Devices-- (-1989)
440300* -- Miscellaneous Instruments-- (-1989)
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450100 -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
47 OTHER INSTRUMENTATION
ACRYLATES
ALLOYS
CALIBRATION
CARBOXYLIC ACID SALTS
CHEMICAL EXPLOSIONS
COMPARATIVE EVALUATIONS
CONSTANTAN
COPPER ALLOYS
COPPER BASE ALLOYS
DATA
DESIGN
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRICITY
ELEMENTS
EXPERIMENT PLANNING
EXPERIMENTAL DATA
EXPLOSIONS
INFORMATION
MANGANESE ALLOYS
MANGANIN
MEASURING INSTRUMENTS
METALS
NICKEL ALLOYS
NUMERICAL DATA
PHYSICAL PROPERTIES
PIEZOELECTRICITY
PIEZOMETRY
PLANNING
RARE EARTHS
STRAINS
STRESSES
YTTERBIUM