CALIBRATION OF WIRE-LIKE MANGANIN GAUGES FOR USE IN PLANAR SHOCK-WAVE EXPERIMENTS

Journal Article · Mon Dec 28 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3295210· OSTI ID:21366856

Chapman, David J; Braithwaite, Christopher H; Proud, William G ^[1]

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1. Fracture and Shock Physics, SMF Group, Cavendish Laboratory, J. J. Thomson Ave., Cambridge, CB3 0HE (United Kingdom)

Piezoresistive gauges have been used extensively for many decades as in-material stress transducers during shock wave experiments. Manganin demonstrates a high piezoresistive response which is relatively temperature independent. As such manganin gauges have been widely calibrated by many authors for use during shock-wave experiments. The precise calibration has been demonstrated to depend on both the chemical composition and mechanical history of the manganin, and on the geometry of the gauge. The research presented in this paper refers to the calibration of a commercially available manganin gauge, Micro-measurements J2M-SS-580SF-025, generally referred to as the T-gauge owing to its geometry. The T-gauge has seen widespread use as a pressure transducer to measure lateral stress during plate-impact experiments. It has been previously proposed that T-gauges have a similar response to the grid foil-like manganin gauges extensively calibrated by Rosenberg et al. However, recently it has been suggested that they in fact behave in a wire-like manner. The results presented here demonstrate that the gauges' behaviour is wire-like when mounted to measure longitudinal stress. A modified calibration can be applied successfully to convert the relative resistance change to the stress normal to the gauge element. These results have important ramifications for the reduction of lateral stress measurements previously made using the T-gauge.

• OSTI ID: 21366856
• Journal Information: AIP Conference Proceedings, Vol. 1195, Issue 1; Conference: American Physical Society Topical Group on shock compression of condensed matter, Nashville, TN (United States), 28 Jun - 3 Jul 2009; Other Information: DOI: 10.1063/1.3295210; (c) 2009 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CALIBRATION
CHEMICAL COMPOSITION
FOILS
GAUGE INVARIANCE
MANGANIN
PLATES
QUANTUM FIELD THEORY
SHOCK WAVES
STRESSES
TRANSDUCERS
WIRES
ALLOYS
COPPER ALLOYS
COPPER BASE ALLOYS
FIELD THEORIES
INVARIANCE PRINCIPLES
MANGANESE ALLOYS
NICKEL ALLOYS
TRANSITION ELEMENT ALLOYS