Artículo
Ultrasonic Lamb waves detection using an unstabilized optical interferometer with uncalibrated phase shifts
Fecha de publicación:
11/2014
Editorial:
Taylor & Francis
Revista:
Journal of Modern Optics
ISSN:
0950-0340
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We present an experimental and post-processing scheme that allows ultrasound surface wave detection by means of an unstabilized homodyne interferometric technique. We register interference signals for a set of uncalibrated phase shifts and, from them, we are able to retrieve the normal surface displacement of a thin aluminium plate. The results obtained with this technique are then compared to robust and more traditional phase recovery methods such as the Carré algorithm and the 11-step windowed discrete Fourier transform algorithm. For both algorithms, we found a correlation superior to 99.9%, when compared to the results of the proposed technique. This non-destructive testing scheme represents a simpler and less-expensive alternative to other existing laser ultrasonic techniques.
Palabras clave:
Interferometry
,
Phaseshift
,
Laser-Ultrasonics
,
Surface-Waves
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Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Perez Quintian, Luis Fernando; Alvarez, Natalia Clara; Garea, María Teresa; Ultrasonic Lamb waves detection using an unstabilized optical interferometer with uncalibrated phase shifts; Taylor & Francis; Journal of Modern Optics; 62; 7; 11-2014; 556-559
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