Abstract
Our efforts in the past few years to visualize the scattering of ultrasound in solids by the photoelastic technique are briefly reviewed. Photoelastic photographs are presented showing the dynamic processes of scattering in glass of plane longitudinal or transverse waves by a cylindrical cavity or cavities as well as by two-dimensional surface-breaking or internal cracks. Phenomena like creeping and multiple scattering are clearly seen, in addition to some details which are not predicted by known theories.
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References
Ying Chongfu (C. F. Ying), Zhang Shouyu, and Wang Lisheng, Study of the creeping waves around cylindrical cavities in solid medium by the photoelastic technique,Scientia Sinica XXIV:1509–1520 (1981). (A pertinent film was shown at the Conference UI-81, Brighton, U.K. 1981.)
Ying Chongfu and Zhang Shouyu, Reflection of an acoustic wave in a solid and its relation to the creeping phenomena,Scientia Sinica, ser. A,XXVII:55–69 (1984).
Shen Jianzhong, Scattering of an ultrasonic pulse by a ribbontype crack in solid. M.Sc. thesis (in Chinese), Academia Sinica, October 1981. Partly submitted to 11e ICA, Paris 1983, and partly to appear in Acta Acusta.
J. Z. Shen and C. F. Ying, Scattering of a longitudinal pulse at grazing incidence by a crack of finite width in solid. Presented at the IEEE 1983 Ultrasonics Symposium, Atlanta, Ga.
H. L. Zhang, C. F. Ying, and M. X. Li, Direct wave and edge waves radiated by a thickness-mode transducer into a solid medium. Presented at the IEEE 1983 Ultrasonics Symposium, Atlanta, Ga.
See, e.g., Selcuk Sancar and Yih-Hsing Pao, Spectral analysis of elastic pulses backscattered from two cylindrical cavities in a solid, Part I and Part II,J. Acoust. Soc. Am. 69:1591–1596, 1597–1609 (1981).
Zhang Shouyu, Liu Zhongqi, and Zhou Jinghua, An optical method of visualizing ultrasonic field in solid,Acta Acustica 5:197–201 (1980) (in Chinese).
Zhang Shouyu and Wang Lisheng, Quantitative measurement of the ultrasonic stresses in a transparent solid by the photoelastic method.Chinese J. Acoustics 2:97–106 (1983).
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Ying, C.F., Zhang, S.Y. & Shen, J.Z. Scattering of ultrasound in solids as visualized by the photoelastic technique. J Nondestruct Eval 4, 65–73 (1984). https://doi.org/10.1007/BF00566398
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DOI: https://doi.org/10.1007/BF00566398