Damage Detection in Composite Plates by Using an Enhanced Time Reversal Method

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Piezoelectric Transducer-Based Structural Health Monitoring for Aircraft Applications (2019, methodology): “By shifting the frequency to compensate the signature changes subjected to the variations in temperature, their experimental results indicated that damage identiﬁcation was successful above 200 ◦ C, making the metal wire method suitable for the EMI technique in high temperature environments.”
Time reversal active sensing for health monitoring of a composite plate (2007, background): “[26] reveals that this TR value increases significantly once damage is introduced along the wave propagation path.”
Understanding a time reversal process in Lamb wave propagation (2009, result): “Note that the within-mode dispersion of a single mode signal is compensated during the TRP, and it does not affect the time reversibility as also demonstrated in the previous works [8,10,11].”
Parameter Estimation of the Generalized Extreme Value Distribution for Structural Health Monitoring (2005, methodology): “Based on this observation, a damage index is defined as a function of the reconstructed signal’s deviation from the original input waveform [16]:”