ABSTRACT
Gases oppose volume changes resulting in longitudinal waves as a response to a disturbance in gas volume. In contrast to sound propagation in gases, vibration propagation in solids can involve many types of waves. Solid media not only exhibit elasticity but also shear. Innite solid media can carry both longitudinal and transverse waves. Finite solid media can also carry many other wave types, particularly bending, transverse, torsional, quasi-longitudinal, and different types of surface waves. Some of the most important and common wave types will be discussed in this chapter.
