Strain transducers

Details Strain transducers Strain transducers

G - Physics

01

L

73/70

G01L 1/22 (2006.01) G01L 5/00 (2006.01)

Patent

CA 1222150

ABSTRACT A strain transducer is adapted to measure strain at a chosen depth below the surface of a workpiece, such as at the neutral axis of a draft bar. The transducer has a hollow cylindrical plug projecting from a co-axial shoulder of slightly larger diameter, the distal end of the plug being force fitted with a disc-like diaphragm on which strain gauges are mounted. These are on the inside face, and connections extend up inside the plug to encapsulated electronic circuitry at the proximal end. The workpiece is bored to an extent greater than the chosen depth and then counter- bored to match the plug and shoulder, and the transducer is inserted with an interference fit.

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