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Russian Journal of Nondestructive Testing

, Volume 36, Issue 1, pp 55–57 | Cite as

On the problem of reconstruction of defects of complex shapes

  • E. A. Troyan
Acoustic Methods
  • 18 Downloads

Abstract

The paper considers reconstruction of a defect of an arbitrary shape in a solid on the basis of changes in the characteristics of a back-scattered ultrasonic wave. Typical dimensions of the defect are assumed to be larger than the wavelength, and the defect is assumed to be in the far-field zone, which allows us to operate in the plane-wave approximation. An algorithm for constructing a convex shell for a non-convex defect using the return time of the back-scattered wave measured by scanning the angles around the tested object is described. The method is illustrated on examples of convex shells of two-dimensional defects of different shapes.

Keywords

Nondestructive Test Arbitrary Shape Return Time Defect Boundary Defect Shape 
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

© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • E. A. Troyan
    • 1
  1. 1.Research Institute of Mechanics and Applied MathematicsRostov State UniversityRostov-on-DonRussia

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