2018
DOI: 10.3390/s18072267
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Effects of Applying Different Resonance Amplitude on the Performance of the Impedance-Based Health Monitoring Technique Subjected to Damage

Abstract: Smart materials such as piezoelectric transducers can be used for monitoring the health of building structures. In this study, a structural health monitoring technique known as the electromechanical impedance (EMI) method is investigated. Although the EMI method has the advantage of using a single piezoelectric patch that acts both as the actuator and as the sensor, there are still many issues to be addressed. To further understand the problem, the performance of the EMI method on a structure subjected to prog… Show more

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Cited by 9 publications
(12 citation statements)
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“…The gradient of the objective function might be used to increase the efficiency of optimization. In Equation 8, the first derivative of the FRF h αi (µ, ω i ) with respect to the damage factor can be obtained by differentiation of Equations (6) and (7). Then the gradient expression of the objective function is as shown in Equation 10:…”
Section: The Gradient Of the Improved Objective Functionmentioning
confidence: 99%
See 3 more Smart Citations
“…The gradient of the objective function might be used to increase the efficiency of optimization. In Equation 8, the first derivative of the FRF h αi (µ, ω i ) with respect to the damage factor can be obtained by differentiation of Equations (6) and (7). Then the gradient expression of the objective function is as shown in Equation 10:…”
Section: The Gradient Of the Improved Objective Functionmentioning
confidence: 99%
“…Then the positive eigenvalues, i.e., the number of virtual distortions are shown in Table 2, which is 261 virtual distortions in total. If all virtual distortions are used, a 261 × 261 linear system of equations should be calculated to determine one virtual distortion when solving Equation (7). In order to reduce the computational cost, the correlation between the virtual distortions of each substructure and the distortion of the undamaged structure is analyzed.…”
Section: Selection Of the Main Virtual Distortionsmentioning
confidence: 99%
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“…At the same time, non-destructive testing techniques, such as acoustic emission technology [ 19 , 20 ], ultrasonic testing technology [ 21 ], fiber optics [ 22 ] and X-ray, have been proposed for civil structures [ 23 , 24 , 25 , 26 , 27 , 28 ]. In recent years, piezoceramic materials have been successfully applied to structural damage monitoring or stress monitoring [ 29 , 30 , 31 , 32 , 33 , 34 ], including the smart aggregate enabled active sensing method [ 35 , 36 , 37 , 38 , 39 ], the piezoelectric impedance method [ 40 , 41 , 42 , 43 , 44 ] and the other methods [ 45 , 46 , 47 , 48 , 49 ]. Du et al [ 50 ] investigated the pipeline corrosion pit detection using the time reversal technique with a piezoceramic transducer as a time reversal mirror.…”
Section: Introductionmentioning
confidence: 99%