Acoustical testing of hydraulic actuators

Details Acoustical testing of hydraulic actuators Acoustical testing of hydraulic actuators

1984-08-06

1986-02-25

Levy, Stewart J.

Measuring and testing

Blower, pump, and hydraulic equipment

73 405A, G01M 324

Patent

active

045719942

ABSTRACT:
A device for testing hydraulic actuators using acoustical transducers to se sound sources indicative of leaks or other defects in the actuator. A graph of acoustic signals versus piston location may be determined using one acoustic transducer and one position sensor. A correlation function may be obtained by cross-correlating the output from two spaced acoustic transducers.

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