| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic probe usable in a civil engineering structure or the like and enhanced in sensitivity. SOLUTION: The ultrasonic probe 1 is constituted so that a piezoelectric vibrator 3 is vibrated when transmission voltage Vs is applied across electrodes 5 and 7. The vibration of the piezoelectric vibrator 3 is transmitted through an aluminum front plate 9 and a medium being a specimen as an ultrasonic wave F<SB>0</SB>. In the case of inspection due to a reflecting method, the ultrasonic wave F<SB>0</SB>is reflected from the boundary surface of the specimen, the reflected wave is received by the ultrasonic probe 1 and receiving voltage Vr is generated in the piezoelectric vibrator 3. COPYRIGHT: (C)2007,JPO&INPIT
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