Title :
Nondestructive SAW material attenuation via acoustic microscopy
Author_Institution :
Hughes Aircraft Company, Missile Systems Group, Canoga Park, USA
Abstract :
The reflection acoustic microscope may be used without modification to record the total SAW attenuation composed of substrate loss and radiation into the coupling fluid if sufficiently short RF pulse bursts are used. By way of example, grain scattering losses in bearing steel are estimated after estimation and subtraction of the substantial SAW radiation losses from the measured attenuation.
Keywords :
acoustic microscopes; acoustic wave absorption; surface acoustic waves; RF pulse bursts; acoustic microscopy; bearing steel; coupling fluid; grain scattering losses; nondestructive SAW material attenuation; radiation losses; reflection acoustic microscope; substrate loss;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830693
