2013
DOI: 10.1177/0954406213516438
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Damage identification using flexural vibration actuated and sensed by piezoelectric transducers

Abstract: A diagnostic method of inspecting structural integrity using vibration, which is generated and monitored by piezoelectric transducers, is presented. When damage occurs in structures, the flexural-wave propagation characteristics change because of discontinuities in structural properties. To monitor this change, frequency-dependent variation of the wavenumber is measured from the piezoelectrically actuated harmonic vibration of a structure. The theoretical model was proposed to analyze the wave propagation and … Show more

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Cited by 10 publications
(7 citation statements)
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“…This method also allowed for the precise and robust determination of the surrounding fluid properties with minimal influence from external noise because the transfer function was obtained from the relative displacement between two locations on the cantilever. The wave approach for the vibration analysis allows for the verification of the experimental setup since defective parts or improper boundary conditions induce completely different vibration behaviors [ 21 ]. The natural frequencies were not required for these measurements.…”
Section: Discussionmentioning
confidence: 99%
“…This method also allowed for the precise and robust determination of the surrounding fluid properties with minimal influence from external noise because the transfer function was obtained from the relative displacement between two locations on the cantilever. The wave approach for the vibration analysis allows for the verification of the experimental setup since defective parts or improper boundary conditions induce completely different vibration behaviors [ 21 ]. The natural frequencies were not required for these measurements.…”
Section: Discussionmentioning
confidence: 99%
“…13,14 If the transfer function for a bare cantilever is measured, Eq. (6) is a function of the wavenumber,k b , and can be solved using the NewtonRaphson method.…”
Section: Eimentioning
confidence: 99%
“…Use of the embedded patch is advantageous in that no additional sensor for measuring vibration is required. When the sensor patch is embedded at the clamped end, [14][15][16] the output voltage can be obtained from Eq. (8) as…”
Section: Measurement Of Rheological Properties Of Fluidsmentioning
confidence: 99%