Detection of transient surface acoustic waves of nanometric amplitude with double-pulsed TV holography.
We describe the detection of bursts of surface acoustic waves by a double-pulsed TV holography technique. We describe mathematically the long- and short-wave bursts in the output correlograms and validate theoretical results with experimental images. The use of short-wave bursts permits us to scan the surface and makes it easier to distinguish, for purposes of nondestructive testing, the disturbances produced by flaws.
Trillo
Cristina
C
Departamento de Física Aplicada, Universidad de Vigo, Esuela Técnica Superior de Ingenieros Industriales, Campus de Lagoas-Marcosende, 36280 Vigo, Spain.
Cernadas
Daniel
D
Doval
Angel F
AF
López
Carlos
C
Dorrío
Benito V
BV
Fernández
José L
JL