Ultrasonic Self-Focusing on the Edge of a Surface-Breaking Crack: Experiment and Modeling
Source abstract
Abstract
An adaptive time-delay self-focusing technique has been used to focus ultrasound on the edge (tip) of a surface-breaking crack emanating from the opposite side of a plate. The diffraction of the focused signal has been measured with the array. Simulation of the self-focusing process and the diffraction by the crack edge has been carried out to obtain numerical results for the edge diffraction. Ray tracing has been used to determine the incident wave field in the plate. Comparisons between the numerical results and the measured data show good agreement. The results have been used to determine the depth of the crack.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ultrasonics and Acoustic Wave Propagation · Geophysical Methods and Applications · Numerical methods in engineering
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References (10)
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1. B. Beardsley, M. Peterson and J. D. Achenbach, “A simple scheme for self-focusing of an array,” J. Nondestructive Eval. 14, 4, 169–179 (1995).10.1007/BF00730887 ↗
2. W. Deutsch, A. Cheng, and J. D. Achenbach, ''Self-focusing of Rayleigh waves and Lamb waves with with a linear phase array, Res. Nondestructive Eval. 9, 81–95 (1997).10.1080/09349849709409609 ↗
3. M. Zhang and J. D. Achenbach, “Simulation of self-focusing by longituan array on a crack in an immersed specimen,” Ultrasonics 37, 9–18 (1999).10.1016/S0041-624X(98)00038-9 ↗
4. J. D. Achenbach, A. K. Gautesen, and H. McMaken, Ray Methods for Waves in Elastic Solids, Pitman, London 1982.
5. J. D. Achenbach and A. N. Norris, “Interference of corner reflected and edge diffracted signals for a surface-breaking crack,” J. Acoust. Soc. Amer. 70, 165–171 (1981).10.1121/1.386694 ↗
6. Alex A. Bagarry, III, “Ultrasonic crack growth monitoring using distributhe satellite pulse crack tip diffraction through-wall depth sizing technique,” Mater. Eval. 57, 36–38 (1999).
7. B. Bridge, “Appraisal of ultrasonic methods for the non-destructive comevaluation of particle and fiber-filled thermoplastics,” Brit. J. Non-Destructive Testing 29, 326–331 (1987).
8. Joseph Samman, “In-service inspection of nuclear power plants,” Epure 16, 35–37 (1987).
9. D. E. Newland, Random Vibrations, Spectral and Wavelet Analysis, Wiley, New York, 1994.
10. J. Krautkrámer and H. Krautkrämer, Ultrasonic Testing of Materials, 4th edn., Springer-Verlag, New York 1990.10.1007/978-3-662-10680-8 ↗