Low impedance manganin stress gauge system for severe shock wave environments

Conference · Thu Apr 26 04:00:00 EST 1979

OSTI ID:5998112

Weingart, R; Chan, J; Erickson, L; Janzen, J; Vantine, H; Lee, R

Manganin piezoresistive stress gauges have been applied to static pressure measurements for over 75 years and have found application in shock wave physics for almost two decades. Recently, the small size, fast response, and potential ruggedness of the gauges have led to their application in one of the more severe regimes of shock physics, reactive hydrodynamic flow. In reacting high explosives, pressures range up to 40 GPa (4 x 10/sup 5/ atm) and turbulence forms rapidly. Obtaining accurate pressure records from manganin gauges for more than one or two microseconds beyond shock arrival is a challenging experimental design problem. Such stress time histories can be used, however, to precisely calculate explosive energy release rates and verify computer models of reactive hydrodynamic flow. An improved manganin gauge system with an extended lifetime in severe hydrodynamic environments and a reproducibility better than 2% has been developed.

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore Lab.; Kansas State Univ., Manhattan (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5998112
• Report Number(s): UCRL-81605; CONF-790635-1
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ACCURACY
FLUID MECHANICS
HYDRODYNAMICS
MEASURING INSTRUMENTS
MECHANICS
PERFORMANCE TESTING
PRESSURE GAGES
SHOCK WAVES
STRESSES
TESTING