To further emphasize a reflection wave of a defective portion by making a noise signal close to zero infinitely and deleting a waveform caused by another mode in an inspection method using a guide wave.
According to an inspection method using a guide wave 1, the guide wave 1 is generated which is propagated in the length direction within a stick-like or pipe-like inspection body 7 to be measured, a reflection wave 2 of the guide wave 1 is detected and on the basis of the reflection wave 2, the inspection body 7 is inspected. The guide wave 1 is generated in the inspection body 7 to be measured by applying an AC voltage to coils 3a, 5a, the reflection wave 2 obtained by reflecting the guide wave 1 in a defective portion 10 is detected and stored in a plurality of detection portions D1, D2, D3 separated by a predetermined distance, the plurality of stored reflection waves 2 are deviated, aligned in the same phase and stored and the reflection waves 2 aligned in the same phase are multiplied by each other.
YOSHIZAKI MASATO
ARAKAWA TAKAHIRO
| JPH05346421A | 1993-12-27 | |||
| JPH09243608A | 1997-09-19 | |||
| JP2007121092A | 2007-05-17 | |||
| JP2002236113A | 2002-08-23 | |||
| JP2010246692A | 2010-11-04 | |||
| JP2012107959A | 2012-06-07 | |||
| JPS53180A | 1978-01-05 |
Toshihiro Nomura
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