Lamb Waves

Lamb waves propagate in solid media. They are elastic waves whose particle motion lies in the plane defined by the plate normal and the direction of wave propagation. In 1917, the English mathematician Horace Lamb published his classic analysis and description of acoustic waves of this type. Their properties turned out to be quite complex. An infinite medium supports just two wave modes traveling at unique velocities, but plates support two infinite sets of Lamb wave modes, whose velocities depend on the relationship between wavelength and plate thickness.Since the 1990s, the understanding and utilization of Lamb waves has advanced greatly, thanks to the rapid increase in the availability of computing power. Lamb's theoretical formulations have found substantial practical application, especially in the field of nondestructive testing.Another name used for these waves in layered media is Rayleigh Lamb waves.... Mehr