Calculation of Radiation Beam Field from Phased Array Ultrasonic Transducers Using Expanded Multi-Gaussian Beam Model

Abstract:

For the reliable application of ultrasonic phased array technique, it is necessary to understand the characteristics of the radiation beam field from the array transducers quantitatively. Very recently, it has been developed the expanded multi-Gaussian beam model that can calculate the radiation beam field from a single, rectangular transducer with great computational efficiency. In this paper, this model is adopted to calculate the radiation beam field from array transducers with various time delays to achieve steering and/or focusing. The calculation results are compared to those obtained by well known Rayleigh-Sommerfeld integral that provides the exact solution in order to explore the validity of the expanded multi-Gaussian beam model in this task.

• Periodical: Solid State Phenomena (Volume 110)
• Pages: 163-168
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.110.163
• Online since: March 2006
• Authors: Joon Soo Park, Sung Jin Song, Hak Joon Kim
• Keywords: Multi Gaussian Beam, Phased Array Ultrasonic Transducer, Radiation Beam Field

References

[1] S. C. Wooh, Y. Shi, Wave Motion, Vol 29(1999), p.245.

[2] L. Azar, Y. Shi, S. C. Wooh, NDT&E International, Vol. 33(2000), p.189.

[3] S. J Song and C. H. Kim, Ultrasoncs, Vol. 40(2002), p.519.

[4] D. Ding, Y. Zhang and J. Liu, J. Acoust. Soc. Am. Vol 113(2003), p.3043.

[5] J. J. Wen and M. A. Breazeale, J. Acoust. Soc. Am., Vol. 83 (1988), p.1752.

[6] L. W. Schmerr, Plenum Press, new York and London, (1998).