Acoustic Microscopy: Review of Progress in Materials Characterization

Acoustic waves can penetrate opaque materials and provide useful information if properly recorded. Combining the acoustic wave generation, mechanical scanning. and control and dat a processing, an acoustic microscope is a practical tool for nondestructive evaluation of industrial arid medical applications. Not only surface and subsui 血cc images(an be obtained, also stress states arid elastic properties can be evaluated. New technology now under development could provide more accurate interpretation for examining steel structures as well as other engineering materials. In this review, the author shows various techniques associated with material characterization and possible improvements over measurement constrailists.