Diffraction aperture non-ideal behaviour of air coupled transducers array elements designed for NDT

Ultrasonics

Volumn 44, Issue SUPPL., 2006, Pages

  Prego Borges, J L ^a   Montero de Espinosa, F ^b   Salazar, J ^a   Garcia Alvarez, J ^a   Chavez J A ^a   Turo A ^a   Garcia Hernandez, M J ^a  

^a UNIVERSITAT POLITÈCNICA DE CATALUNYA   (Spain)

^b Consejo Superior de Investigaciones Científicas   (Spain)

Author keywords

Air coupled array; Apodized aperture; Radiation aperture modification; Surface non ideal behaviour

Indexed keywords

ACOUSTIC ARRAYS; CERAMIC MATERIALS; DIFFRACTION; NONDESTRUCTIVE EXAMINATION; PIEZOELECTRIC MATERIALS; VELOCITY MEASUREMENT; WAVE PROPAGATION;

AIR COUPLED ARRAYS; APODIZED APERTURES; RADIATION APERTURE MODIFICATION; SURFACE NON IDEAL BEHAVIOR;

ULTRASONIC TRANSDUCERS;

EID: 33845686608     PISSN: 0041624X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ultras.2006.05.125     Document Type: Article

References (7)

1. M.J. Garcia-Hernandez, F. Montero de Espinosa, J.A. Chavez, Y. Yañez, J.L. Prego Borges, J. Salazar, A. Turo, NDE Lamb waves ultrasound system using an air coupled concave array transducer, in: 16th World Conference on Non-destructive Testing, August 30-September 3, 2004.
2. Castaings M., and Cawley P. The generation, propagation, and detection of Lamb waves in plates using air-coupled ultrasonic transducers. J. Acoust. Soc. Am. 100 5 (1996) 3070-3077
3. Y. Yañez, J.A. Chavez, J. Salazar, A. Turo, M.J. Garcia-Hernandez, Wide dynamic range electronics for air-coupled Lamb-waves ultrasonic NDT using piezoelectric transducer arrays, in: 2004 IEEE Instrumentation and Measurement Technology Conference, Como (Italy), 18-20 May 2004, vol. 3, pp. 1926-1929.
4. Benny G., Hayward G., and Chapman R. Beam profile measurements and simulations for ultrasonic transducers in air. J. Acoust. Soc. Am. 107 4 (2000) 2089-2100
5. San Emeterio J.L., and Ullate L.G. Diffraction impulse response of rectangular transducers. J. Acoust. Soc. Am. 92 2 (1992) 651-662
6. Piwakowski B., and Sbai K. A new approach to calculate the field radiated from arbitrarily structured transducer arrays. IEEE Trans. UFFC 46 2 (1999) 422-440
7. J.A. Jensen, A new approach to calculating spatial impulse responses, in: Proceedings of IEEE Ultrasonics Symposium, 5-8 October 1997, vol. 2, pp. 1755-1759.