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Photoacoustic Microscopy
[report]
1984
unpublished
Preserved Fulltext
Recent advances in scanning photoacoustic microscopy (SPAM) for NDE are described. Conventional and phase-contrast modes are used to detect a well-characterized subsurface flaw in Al, and the results are shown to be in good agreement with calculations based upon a three-dimensional thermal diffusion model. Applications of the technique are given which demonstrate surface and subsurface flaw detection in complex-shaped ceramic turbine parts. Photoacoustic pictures are presented of an integrated
doi:10.21236/ada147615
fatcat:fikcupy5lnb63egaejych7gpr4