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Specific Features of Excitation and Propagation of Longitudinal and Transverse Subsurface Waves in Solids: I. Waves in Objects with a Free Plane Boundary

  • Acoustic Methods
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Abstract

Specific features of excitation and propagation of transverse and longitudinal subsurface waves in solids are determined. Dependences of the parameters of the acoustic field generated in a solid body on the acoustic properties of a probe's wedge and of the tested body are found experimentally and compared to theoretical results. Using the amplitude and the directivity characteristic of the principal transverse mode and of accompanying secondary modes (longitudinal and Rayleigh), the optimum solutions for identifying subsurface flaws characterized by low reflectivity are determined. Studies of the passage of an acoustic signal through a magnetic-fluid acoustic guide and analysis of the magnetic-fluid's acoustic properties enable conclusions to be drawn regarding expediency of the usage of such media for excitation (detection) of longitudinal and transverse subsurface waves in materials with low velocity of sound (plastic, etc.)

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Authors and Affiliations

  1. Institute of Applied Physics, Belarussian Academy of Sciences, Akademicheskaya ul. 16, Minsk, 270072, Belarus

    A. R. Baev & M. V. Asadchaya

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  1. A. R. Baev
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  2. M. V. Asadchaya
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__________

Translated from Defektoskopiya, Vol. 41, No. 9, 2005, pp. 19–31.

Original Russian Text Copyright © 2005 by Baev, Asadchaya.

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Baev, A.R., Asadchaya, M.V. Specific Features of Excitation and Propagation of Longitudinal and Transverse Subsurface Waves in Solids: I. Waves in Objects with a Free Plane Boundary. Russ J Nondestruct Test 41, 567–576 (2005). https://doi.org/10.1007/s11181-006-0003-x

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  • DOI: https://doi.org/10.1007/s11181-006-0003-x

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