Vibro-acoustic modulation technique for micro-crack detection in pipeline

Jingpin Jiao; Lei Zheng; Guorong Song; Cunfu He; Bin Wu

doi:10.1117/12.905550

15 November 2011 Vibro-acoustic modulation technique for micro-crack detection in pipeline

Jingpin Jiao, Lei Zheng, Guorong Song, Cunfu He, Bin Wu

Proceedings Volume 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation; 83213X (2011) https://doi.org/10.1117/12.905550
Event: Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 2011, Yunnan, China

Abstract

For the poor sensitivity of traditional ultrasonic technique for micro crack detection, a kind of nonlinear ultrasonic technique, vibro-acoustic modulation technique, is used for micro crack detection in pipes. The influence of the frequency and amplitude of vibration on the modulation index (MI) is experimentally investigated. The experiment results prove that the vibro-acoustic modulation technique can be used for crack detection in pipes. The modulation index is influenced by the frequency and amplitude of vibration, therefore it is important to choose the appropriate parameters in order to get higher sensitivity in crack detection.

Citation Download Citation

Jingpin Jiao, Lei Zheng, Guorong Song, Cunfu He, and Bin Wu "Vibro-acoustic modulation technique for micro-crack detection in pipeline", Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83213X (15 November 2011); https://doi.org/10.1117/12.905550

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