... harvesting, where the localization of wave energy in a small spot is desirable. phononic crystals negative refraction subwave-length imaging elastic wave focusing flat elastic lenses Lamb waves Proceedings of the ASME 2021 International Design Engineering Technical Conferences and Computers...

... This investigation examines the application of low frequency Lamb waves for the detection of delaminations in thick composite laminates. Surface mounted piezoelectric devices were excited with a tone burst of few cycles generating a stress wave that propagates along the structure. Experiments were carried out...