Extensometer readout circuit

Details Extensometer readout circuit Extensometer readout circuit

1982-09-22

1984-08-14

Ciarlante, Anthony V.

Measuring and testing

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

Specified electrical sensor or system

73788, 73794, 73796, 73826, G01B 716

Patent

active

044649371

ABSTRACT:
An extensometer readout circuit conditions a strain information signal, representing strain of a specimen being tested, in such a way that yield point measurements and final elongation measurements of such specimen may be concurrently obtained. The strain information signal is provided by subjecting the specimen to a tensile or compression test by any conventional means known in the prior art. The strain information signal is first applied to a preamplifier. The preamplified strain information signal is then concurrently applied to both a high gain amplifier and a low gain amplifier. The signal obtained from the high gain amplifier is used for performing modulus calculations and for obtaining yield point measurements. The signal obtained from the low gain amplifier is used to obtain the total elongation measurement.

REFERENCES:
patent: 3537004 (1970-10-01), Strock
patent: 3714569 (1973-01-01), Bruning et al.
patent: 3789508 (1974-02-01), Meline
patent: 4131846 (1978-12-01), Stone

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