Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Patent
1978-01-27
1980-04-15
Goldstein, Herbert
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
73780, G01B 716
Patent
active
041977530
ABSTRACT:
A strain gage particularly suited for use in detecting and measuring mechanically induced strain in thermally strained specimens including an elongated link, adapted to be fixedly secured to the surface of a specimen, having thermal expansion characteristics matched with those of the specimen, and characterized by a differential capacitor employed for detecting strain induced motion as such motion is effected between the link and the surface of the specimen.
REFERENCES:
patent: 2961872 (1960-11-01), Metzmeier et al.
patent: 3206970 (1965-09-01), Dally et al.
patent: 3293909 (1966-12-01), Gledhill
patent: 3295365 (1967-01-01), Larrigan et al.
Foldvari et al., "Capacitive Transducers" In Instruments and Control Systems, pp. 77-85.
Egger Richard L.
Harting Darrell R.
Goldstein Herbert
Murray Thomas H.
The Boeing Company
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