| 摘要 |
PROBLEM TO BE SOLVED: To provide a crack detection support device effectively detecting a crack of a measuring object by non-contact vibration of the measuring object by stably irradiating a measuring target with ultrasonic waves with a high sound pressure level to float and vibrate the measuring object along the density of the ultrasonic waves. SOLUTION: The crack detection support device 100 includes: a vibrating part 10 generating ultrasonic waves; a diaphragm 12 generating ultrasonic waves with a prescribed sound pressure level by resonating with vibration of the vibrating part 10; an oscillation part 30 supplying a voltage of a frequency in a range of the measuring object 50 floated and deviated from the resonance frequency of the diaphragm 12, to a piezoelectric element 10a; and a sound detection device 13 detecting a sound generated from the measuring object 50 floating and vibrating in the air by the ultrasonic waves emitted from the diaphragm 12. COPYRIGHT: (C)2011,JPO&INPIT
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