Strain gauge with steel substrate

Details Strain gauge with steel substrate Strain gauge with steel substrate

1997-12-22

1999-09-28

Noori, Max

Measuring and testing

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

Specified electrical sensor or system

73780, H01L 2996

Patent

active

059592141

ABSTRACT:
A strain gauge has a stainless steel substrate with a dielectric coating comprising two dielectric layers. A circuit comprising conductors, resistors and piezoresistors in a Wheatstone bridge configuration is formed on the dielectric. One dielectric layer is to adhere to the steel and a second is to form a barrier against diffusion of the first layer into the piezoresistor material. An amplification and signal conditioning circuit is applied adjacent the bridge. The steel substrate is to be welded or bolted at its marginal portions to a structure subject to strain.

REFERENCES:
patent: 3758830 (1973-09-01), Jackson
patent: 4085620 (1978-04-01), Tanaka
patent: 5417115 (1995-05-01), Burns
patent: 5511428 (1996-04-01), Goldberg et al.
patent: 5616514 (1997-04-01), Muchow et al.
patent: 5756901 (1998-05-01), Kurle et al.

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