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Propagation and Diffraction of Flexural Waves on Thin Elastic Plates

Many branches of engineering require an understanding of the propagation and diffraction of waves on thin elastic structures. Two notable examples are, first, the control of noise and vibration in aircraft and land-based vehicles, and second, the nondestructive evaluation of defects such as cracks in thin components. The latter often employs ultrasonic excitation of elastic waves in a specimen, but determining the location and nature of a defect from its scattered wave field is a complex and non-trivial task. Indeed, modern engineering components now employ composite or multiphase materials, which increase the level of difficulty because the plate is anisotropic and often also inhomogeneous.