Sensor for measuring elongations

Details Sensor for measuring elongations Sensor for measuring elongations

1992-03-12

1994-02-08

Raevis, Robert

Measuring and testing

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

Specified electrical sensor or system

G01B 716

Patent

active

052840620

ABSTRACT:
The sensor which is adapted to e inserted into a bore includes a cylinder-shaped body made of an elastomeric material and four resistive wire strains are uniformly distributed around its circumference. This body of an elastic material can be pressed together by means of tensioning members. This causes a deformation of the body in radial direction, such that the resistive wire strains are pressed against the wall of the bore and contact same in a force-locked manner. At the same time, the sensor is held arrested in the bore. Accordingly, an elongation of the structural member is directly transmitted onto the resistive wire strains, such that errors in the signal transmission are avoided.

REFERENCES:
patent: 2599578 (1952-06-01), Obert et al.
patent: 4429579 (1984-02-01), Wilhelm
patent: 4530245 (1985-07-01), Jacobson
patent: 4936149 (1990-06-01), Jacobson

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