Simultaneous application of acoustic and optical techniques to nondestructive evaluation

Abstract

Applications of acoustic and optical techniques to nondestructive evaluation of solid-state materials are considered. An acoustic wave is sensitive to materials’ elastic behavior and an optical wave is sensitive to displacement. Combination of both techniques allows one to probe the constitutive relations and related behaviors of materials. Basic properties of sound and light from the viewpoint of nondestructive evaluations are reviewed. Our ongoing researches in this direction are introduced and preliminary results are discussed.