Ultrasonic Guided Waves

The propagation of ultrasonic guided waves in solids is an important area of scientific inquiry primarily due to their practical applications for nondestructive characterization of materials such as nondestructive inspection quality assurance testing structural health monitoring and providing a material state awareness. This Special Issue of Applied Sciences covers all aspects of ultrasonic guided waves (e.g. phased array transducers meta-materials to control wave propagation characteristics scattering attenuation and signal processing techniques) from the perspective of modeling simulation laboratory experiments or field testing. In order to fully utilize ultrasonic guided waves for these applications it is necessary to have a firm grasp of their requisite characteristics which include that they are multimodal dispersive and are comprised of unique displacement profiles through the thickness of the waveguide.