Triple-material stress-strain resistivity gage

Details Triple-material stress-strain resistivity gage Triple-material stress-strain resistivity gage

1987-05-19

1988-05-17

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified electrical sensor or system

73794, 7386204, G01B 716

Patent

active

047442522

ABSTRACT:
A triple material piezoresistive gage provides multi-component elastic stress or measurements. Thin foils of three piezoresistive materials, e.g. ytterbium, manganin, and constantan, are configured in a nested serpentine rectilinear grid or other grid arrangement and embedded in a medium, preferably normal to the direction of shock wave propagation. The output of the gage is a resistivity change history for each material of the gage. Each resistivity change is independent of the others so that three diagonal components of the elastic stress or strain tensor can be calculated from the resistivity measurements.

REFERENCES:
patent: 3453873 (1969-07-01), Lambert
patent: 3543568 (1970-12-01), Russell
patent: 4185496 (1980-01-01), Tisane et al.
patent: 4429580 (1984-02-01), Testa et al.
patent: 4546652 (1985-10-01), Vikar et al.

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