Acoustical transmission wave guide assembly for predicting failu

Details Acoustical transmission wave guide assembly for predicting failu Acoustical transmission wave guide assembly for predicting failu

1980-02-19

1982-09-28

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310336, 310334, 73587, 73649, 73661, H01L 4108

Patent

active

043520383

ABSTRACT:
A metallic wave guide having a smooth protected surface is connected at one end to a metal structural member under test and at the other to a metal plate to which a piezo electric crystal transducer of preselected frequency response is attached. The lengths of primary and secondary wave guides are carefully selected to control attenuation and time delay of the acoustical energy transmitted along the wave guides to balance inputs and provide repeatable testing data.

REFERENCES:
patent: 3027690 (1962-04-01), Roney
patent: 3210724 (1965-10-01), Jones et al.
patent: 3569748 (1971-03-01), Minchenko
patent: 3777189 (1973-12-01), Skinner et al.
patent: 4131815 (1978-12-01), Boatright

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