Imaging detection of composite plates is presented based on reconstruction algorithm for the probabilistic inspection of damage(RAPID) and double-turn coil omnidirectional shear-horizontal wave magnetostrictive patch ...
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Imaging detection of composite plates is presented based on reconstruction algorithm for the probabilistic inspection of damage(RAPID) and double-turn coil omnidirectional shear-horizontal wave magnetostrictive patch transducer(OSH-MPT) array. The lowest shear-horizontal mode(SH) can propagate in the composite plate through bonding double-turn coil OSH-MPT. RAPID can realize using the direct wave of SH mode to extract the damage information. It is beneficial to detect composite plate in the case that the velocity of direct waves varies with the propagation direction. A small mass which is circular cylinder is bonded to simulate damage. Imaging results are achieved after using modified methods for eliminating the influence of the uneven probability distribution of the array(UPDA) in RAPID. Threshold is selected based on the receiver operating characteristic(ROC) curve for improving RAPID-based imaging accuracy.
In recent years, the environmental engineering of China university of mining and technology (Beijing) specialty carried out a series of reforms, aimed to improve the students' practical experience of innovative ab...
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