Electronic Journal Technical Acoustics ISSN 1819-2408

E. Ya. Bubnov, V. V. Guschin, A. K. Minnegulov, S. N. Rubtsov

The application of elastic fields for the subsurface inhomogeneities detection

language: Russian

received 19.11.2008, published 03.02.2009

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ABSTRACT

In this paper the results of the experimental validation of the method of seismo-acoustic detection of subsurface inhomogenuities are presented. The method is based on the presence of some resonances of objects, depending on the geometry and physical properties of inhomogeneity itself, as well as the surrounding soil condition. The resonant oscillations can be excited by different methods. Two techniques are considered: by a sound wave and by a shaker. Frequency response functions for surface oscillations of different types of soils in the presence of local inhomogeneties are experimentally obtained. A method of contact data acquisition for ground vibration using a vehicle is considered.

Key words: elastic fields, local inhomogenety, ground vibration, acoustic diagnosis

6 pages, 5 figures

Сitation: E. Ya. Bubnov, V. V. Guschin, A. K. Minnegulov, S. N. Rubtsov. The application of elastic fields for the subsurface inhomogeneities detection. Electronic Journal “Technical Acoustics”, http://www.ejta.org, 2009, 1.

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		Evgeniy Ya. Bubnov, Ph.D., Associated Professor at Volga State Academy of Water Transport. Scientific areas: radiophysics, acoustics, seismic acoustics.
		Vladimir V. Gushchin, Ph.D., Leading Researcher at Radiophysical Research Institute, Scientific areas: radiophysics, acoustics, seismic acoustics. e-mail: guvladimir(at)nirfi.sci-nnov.ru
		Albert K. Minnegulov, head of Medium and Heavy Robots Department at the Special Design Bureau of Applied Robotics of Bauman Moscow State Technical University, Scientific areas: robotics, acoustics.
		Sergey N. Rubtsov, Senior Researcher at Radiophysical Research Institute. Scientific areas: radiophysics, nonlinear acoustics.