Which method has the highest sensitivity for SHM evaluation using piezoelectrics: ultrasound or electromechanical impedance?

José M. Basílio Sobrinho @Jose-Basilio-Sobrinho

16 May 2019 1 6K Report

Christian Willberg

Both methods could be very sensitive. It depends on the frequency. However, ultrasonic guided wave are able to monitore surfaces. The impedance measurements are (to my knowledge) monitore effects next to the sensor.

What system you choose depends on the problem you want to solve or monitore.

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