Apparatus for checking the direction of polarization of shear-wa

Details Apparatus for checking the direction of polarization of shear-wa Apparatus for checking the direction of polarization of shear-wa

1979-01-15

1980-12-09

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

310335, 310357, G01R 2922

Patent

active

042387256

ABSTRACT:
An apparatus for checking the direction of polarization of shear-wave ultrasonic transducers comprises a first planar surface for mounting the shear-wave transducer, a second planar surface inclined at a predetermined angle to the first surface to generate longitudinal waves by mode conversion, and a third planar surface disposed at a second predetermined angle to the first for mounting a longitudinal-wave ultrasonic transducer. In an alternate embodiment, two second planar surfaces at the predetermined angle are placed at an angle to each other. The magnitude of the shear wave is a function of the angle between the direction of polarization of the transducer and the mode-conversion surface.

REFERENCES:
patent: 2089216 (1937-08-01), Lynton
patent: 2186677 (1940-01-01), Humphreys

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