Dynamic Piezoresistivity of Manganin Transducers

Technical Report · Sun Apr 01 04:00:00 EST 1973

DOI:https://doi.org/10.2172/822687· OSTI ID:822687

Lyle, J W; Banner, D L; Brier, R L

Manganin, an alloy of copper, manganese, and nickel, was used as a dynamic piezoresistive transducer for shock wave profile measurement in the range from 22 to 410 kbar. Thirty-six gun-accelerated flyer plate impact experiments were performed to calibrate dynamically wires of 1 mil diameter that were electrically insulated with thin dielectric sheets and cemented between target plates. A static calibration gave a linear, reversible, pressure derivative of 2.5 {+-} 0.1 {Omega}/{Omega}/Mbar to 90 kbar. The dynamic calibration is linear within {+-}5% to 200 kbar with a pressure derivative of 2.7 {+-} 0.1 {Omega}/{Omega}/Mbar. At stresses higher than 200 kbar, the dynamic response becomes slightly nonlinear and the data were fit with the polynomial expression {sigma} = 0.3896({Delta}R/R) - 0.2348({Delta}R/R){sup 2} + 0.5825({Delta}R/R){sup 3} - 0.3360({Delta}R/R){sup 4} with a standard deviation of {+-}4.4 kbar, where the stress, {sigma} is in megabar. A linear hysteresis was observed with a pressure derivative of 2.6 {+-} 0.1 {Omega}/{Omega}/Mbar during unloading from a peak stress in the range from zero to 247 kbar. 6 figures, 2 tables.

• Research Organization: California University, Livermore, CA (US), Lawrence Livermore Laboratory (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 822687
• Report Number(s): UCRL-74664
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
47 OTHER INSTRUMENTATION
ALLOYS
ALLOYS-ELECTRICAL PROPERTIES
CALIBRATION
COPPER
COPPER BASE
DIELECTRIC MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRICITY
HYSTERESIS
MANGANESE ALLOYS
MANGANIN
MANGANIN-ELECTRIC CONDUCTIVITY
MEASURING INSTRUMENTS
NICKEL ALLOYS
PHYSICAL PROPERTIES
PHYSICAL PROPERTIES.
PIEZOELECTRICITY
PRESSURE DEPENDENCE
PRESSURE GAGES
PRESSURE GAGES-CALIBRATION
PRESSURE RANGE GIGA PA
SHOCK WAVES
TRANSDUCERS
VERY HIGH PRESSURE
WIRES