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Nonlinear Acoustic Methods for Crack Vision

  • I. N. Didenkulov
  • N. V. Kurochkin
  • A. A. Stromkov
  • V. V. Chernov
Part of the Acoustical Imaging book series (ACIM, volume 27)

Abstract

A crack is acoustically highly nonlinear object. It produces different nonlinear acoustic responses such as higher harmonics generation or nonlinear modulation of an ultrasound wave passing through or reflected from a crack by low frequency vibrations of a tested object. These effects are used for development of the methods of nonlinear acoustic nondestructive testing. Simple nonlinear techniques can be used for detection of damaged objects. However, they cannot give information on crack location. Advanced methods allow one to measure crack position. In this paper we describe the modulation acoustic methods of crack location in a testing sample.

Keywords

Modulation Index Concrete Beam Crack Location High Harmonic Generation Crack Vision 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • I. N. Didenkulov
    • 1
  • N. V. Kurochkin
    • 2
  • A. A. Stromkov
    • 1
  • V. V. Chernov
    • 1
  1. 1.Institute of Applied PhysicsNizhny NovgorodRussia
  2. 2.Nizhny Novgorod State UniversityNizhny NovgorodRussia

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