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A model for the ultrasonic detection of surface-breaking cracks by the scanning laser source technique

Autor
Arias, I.; Achenbach, J.
Tipus d'activitat
Article en revista
Revista
Wave motion
Data de publicació
2004-01
Volum
39
Número
1
Pàgina inicial
61
Pàgina final
75
DOI
https://doi.org/10.1016/j.wavemoti.2003.06.001 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/8558 Obrir en finestra nova
Resum
A model for the scanning laser source (SLS) technique is presented. The SLS is a novel laser-based inspection method for the ultrasonic detection of small surface-breaking cracks. The generated ultrasonic signal is monitored as a line-focused laser is scanned over the defect. Characteristic changes in the amplitude and the frequency content are observed. The modeling approach is based on the decomposition of the field generated by the laser in a cracked two-dimensional half-space, by virtue of l...
Citació
Arias, I.; Achenbach, J. A model for the ultrasonic detection of surface-breaking cracks by the scanning laser source technique. "Wave motion", Gener 2004, vol. 39, núm. 1, p. 61-75.
Paraules clau
Laser Ultrasonics, Thermoelastic Regime, Line-source, Modeling, Nde, Surface-breaking Crack, Crack Detection, Scanning Laser Source Technique
Grup de recerca
LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria

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