Abstract
Ultrasonic guided waves have been proven as a promising tool for structure health monitoring due to their capability of interrogating a large structure from a single transducer position. This study presents the guided wave tomographic imaging in structural health monitoring for detecting cracks and visualization by reconstruction algorithm for the probabilistic inspection of damage. The variable shape factor is suggested for quantitative defect shape and sizing by reconstruction image. The defect of irregular boundary imaging with variable shape factor is precisely reconstructed by advanced RAPID algorithm with limited number of transducers. The particular application of interest is defect imaging of symmetric wave modes with irregular shape defect in plate-like structures. A preliminary study of tomographic imaging by guided waves in a plate-like structure provides guidelines for the quantitative defect imaging.
Published Version
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