Experimental Study on Flaw Response in Inhomogeneous Media

Abstract:

The objective of this paper is to predict the flaw response in an inhomogeneous solid medium. Multi-Gaussian Beam (MGB) model is used to represent the incident ultrasonic beam. The effect of ultrasonic attenuation and phase velocity dispersion due to grain scattering is included in the predictions. The effect of variation of mean diameter of the grains on the received voltage for different domain of interest is studied through the experimental results.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 2881-2885
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.2881
• Online since: October 2011
• Authors: Gang Feng Zheng, Bin Wu, Cun Fu He
• Keywords: Born Approximation, Multi Gaussian Beam, NDE, Ultrasonic Scattering

References

[1] S. Ahmed, R. B. Thompson, and P. D. Panetta, Ultrasonic attenuation as influenced by elongated grains, Review of Progress in QNDE, 21(2003), 109-116.

[2] S. Ahmed, and R. B. Thompson, Propagation of elastic waves in equiaxed stainless steel polycrystals with aligned.

[1] axes, J. Acoust. Soc. Am., 99(1996), 2086-(2096).

[3] L. W. Schmerr, Fundamentals of Ultrasonic Nondestructive Evaluation-A modeling Approach, Plenum press, New York, (1988).

[4] A. Minachi, F. J. Margetan, and R. B. Thompson, Reconstruction of a piston transducer beam using multi-Gaussian beams(MGB) and its application, in Review of Progress in Quantitative Nondestructive Evaluation, D. O. Thompson and D. E. Chimenti, Eds., Plenum, New York, 17A(1998).

DOI: 10.1007/978-1-4615-5339-7_117

[5] L. W. Schmerr, A multigaussian ultrasonic beam model for high performance simulations on a personal computer, Materials Evaluation, 58(2000), 882-888.

[6] Dehua Huang, and M. A. Breazeale, A Gaussian finite-element method for description of sound diffraction, J. Acoust. Soc. Am., 106(1999), 1771-1781.

DOI: 10.1121/1.427926

[7] M. Spies, and M. Kroning, Ultrasonic inspection of inhomogeneous welds simulated by Gaussian beam superposition, in Review of Progress in Quantitative Nondestructive Evaluation, D. O. Thompson and D. E. Chimenti, Eds., Plenum, New York, 18A(1999).

DOI: 10.1007/978-1-4615-4791-4_142

[8] D. Ding, Y. Zhang, and J. Liu, Some extensions of the Gaussian beam expansion: radiation fields of rectangular and elliptical transducers, J. Acoust. Soc. Am., 113(2003), 3043-3048.

DOI: 10.1121/1.1572144

[9] K. Sha, J. Yang, and W. S. Gan, A complex virtual source approach for calculating the diffraction beam field generated by a rectangular planar source, IEEE Trans. On Ultrasonics, Ferroelectrics and Frequency control, 50(2003), 890-896.

DOI: 10.1109/tuffc.2003.1214508

[10] H. J. Kim, S. J. Song, and L. W. Schmerr, An ultrasonic measurement model using multi Gaussian beam model for a rectangular transducer, Ultrasonics, 44(2006), 969-974.

DOI: 10.1016/j.ultras.2006.05.173

[11] R. Huang, L. W. Schmerr, and A. Sedov, Improving the Born approximation for the scattering of ultrasound in elastic solids, Ultrasonics, 44(2006), 981-984.

DOI: 10.1016/j.ultras.2006.05.043

[12] D. L. Jain, and R. P. Kanwal, The Born approximation for the scattering theory of elastic waves by two-dimensional flaws, J. Appl. Phys., 53(1982), 4206-4217.

DOI: 10.1063/1.331245