Imaging flexural inhomogeneities using plate-wave diffraction tomography

This paper presents the first experimental implementation of plate-wave diffraction tomography for the quantitative evaluation of laminar damage in plates using normal incidence inspection. The technique is investigated for origin centered, cylindrical bonded-mass of various size and severity. The results show that diffraction tomography using Lamb waves and Mindlin plate theory offers excellent sensitivity and has the potential for detecting corrosion thinning, disbonds and delamination damage in structural integrity management applications