Deterministic Source Inversion for Wave Propagation Problems in Nondestructive Testing

A source of acoustic or elastic waves is of considerable interest for many nondestructive testing methods. During acoustic emission, waves are generated by transient deformation processes in materials or by externally applied excitations. During ultrasonic testing, transducers of several possible types are used to generate waves. Source inversion refers to the process of determining characteristics of the source of waves from measurements of the resulting wave motion