Automated detection of delamination and disbond from wavefield images obtained using a scanning laser vibrometer

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Complete noncontact laser ultrasonic imaging for automated crack visualization in a plate (2013, background): “Then, the total wave (WT(x, t)) in front of the crack can be written as [19]”
Wireless displacement sensing system for bridges using multi-sensor fusion (2014, unknown): “Efforts have been made to compensate for the low-frequency displacement component of the displacement from acceleration by combining displacement from devices such as GPS and LDVT, but the methods are limited in full-scale application due to issues of accuracy and difficulty of sensor installation [”
Comparison of deep convolutional neural networks and edge detectors for image-based crack detection in concrete (2018, background): “Previous literature demonstrates several 32 successful applications of image-based inspections to detect cracks [11, 12], spalls [13, 14], delaminations 33 [14, 15, 16], and corrosion [17] in concrete bridges.”