Vibratory wire strain gauge assemblies for underwater attachment

Details Vibratory wire strain gauge assemblies for underwater attachment Vibratory wire strain gauge assemblies for underwater attachment

1985-02-14

1987-05-12

Myracle, Jerry W.

Measuring and testing

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

Specified electrical sensor or system

7386259, G01N 308

Patent

active

046639756

ABSTRACT:
A system comprises a pair of straps which are preferably hinged and are arranged to be clamped around a structure, for example, a tubular member to be strain gauged, and secured, for example, by a single swing bolt with a diver sized hand knob. Across these two straps are a number of, for example, two sets of four equally spaced arranged strain gauge assemblies, aligned along the longitudinal axis of the tubular member. Vibrating wire strain gauges are uniformly suspended by compression springs from a protective cover. Because such compression springs are relatively free to move laterally by small amounts, they do not significantly increase the axial stiffness of the strain gauge. The protective cover is attached to the two clamping straps by set bolts with diver sized hand knobs. When tightened the strain gauge will be pressed onto the member surface with the pre-determined spring force. The protective cover is skirted by sealing, which, after installation will seal around the gauges offering complete mechanical protection plus protection from marine fouling.

REFERENCES:
patent: 3683684 (1972-08-01), Judlowe
patent: 4074565 (1978-02-01), Harris et al.

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