Stress sensor having deformable ceramic hollow member

Details Stress sensor having deformable ceramic hollow member Stress sensor having deformable ceramic hollow member

1989-07-20

1991-11-26

Lateef, Marvin M.

Electrical resistors

Resistance value responsive to a condition

Fluid- or gas pressure-actuated

338 4, 338 36, H01C 1010

Patent

active

050686356

ABSTRACT:
A stress sensor for detecting a stress, including a ceramic hollow member, a pair of support members for supporting the ceramic hollow member, and at least one resistor provided on the ceramic hollow member. The ceramic hollow member is deformable according to a stress applied thereto in a direction in which a hollow of the hollow member extends. The support members are disposed at opposite ends of the hollow member, so as to support the hollow member such that the stress is imparted to the hollow member through the pair of support members. The resistor or resistors is/are disposed on one of the inner and outer surfaces of the hollow member. The stress is detected based on a change in the electrical resistance value of the resistor or resistors which is caused by the deformation of the hollow member.

REFERENCES:
patent: 2488347 (1949-11-01), Thurston
patent: 2561318 (1951-07-01), Ruge
patent: 4051451 (1977-09-01), Kurtz et al.
patent: 4127840 (1978-11-01), House
patent: 4311980 (1982-01-01), Prudenziati
patent: 4576049 (1986-03-01), Kohnlechner
patent: 4916426 (1990-04-01), Yajima et al.
"Low Cost Thick-Film Pressure Sensor", Society of Automotive Enginers, Inc., Article 800023, 1980, by A. Cattaneo et al., pp. 49-54.
"Characteristics and Performances of Thick Film Pressure Sensors for Automotive Sensors for Automotive Applications", SAE, Article 820139, Dell'Acqua et al.
"High Pressure Thick Film Monolithic Sensors", SAE, Article 860474, Dell'Acqua et al., pp. 79-87.

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