Pre-straining apparatus and method for strain sensors

Details Pre-straining apparatus and method for strain sensors Pre-straining apparatus and method for strain sensors

1996-08-01

1998-07-07

Dombroske, George M.

Measuring and testing

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

Specified electrical sensor or system

73768, 73775, G01R 716, G01L 1100

Patent

active

057772347

ABSTRACT:
A method and apparatus for pre-straining a bolt-on strain sensor. The pre-strain is preferably adjusted by inserting a strain adjusting tool through strain adjusting holes in the sensor and the structural member. The portion of the tool engaging the sensor is preferably offset from the portion of the tool engaging the hole in the support structure to provide a camming function. After the strain has been adjusted to a desired value, a bolt adjacent the strain adjusting hold of the sensor is tightened to fixedly secure the sensor to the support structure and maintain the preadjust strain at the desired value.

REFERENCES:
patent: 3848462 (1974-11-01), McIirathe
patent: 4064744 (1977-12-01), Kistler
patent: 4292835 (1981-10-01), Bickford
patent: 4711131 (1987-12-01), Hopkins
patent: 4996882 (1991-03-01), Kistler
patent: 5230392 (1993-07-01), Tremblay
patent: 5355715 (1994-10-01), Rausche et al.
patent: 5589640 (1996-12-01), Butler

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