Vacuum coupled transducer

Details Vacuum coupled transducer Vacuum coupled transducer

1987-07-22

1988-08-02

Myracle, Jerry W.

Measuring and testing

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

Threaded fastener stress

269 21, G01N 2900

Patent

active

047607408

ABSTRACT:
A vacuum coupled ultrasonic transducer is presented for coupling a transducer to a bolt for ultrasonic measurement of bolt elongation. A central passageway extends through the transducer body, the piezoelectric crystal and a seal element. A vacuum line extends through the central passageway.

REFERENCES:
patent: 3810385 (1974-05-01), McFaul et al.
patent: 4217849 (1980-08-01), Brown et al.

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