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Calculation of DGS diagrams for elliptic flat-bottom holes

  • Acoustic Methods
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Russian Journal of Nondestructive Testing Aims and scope Submit manuscript

Abstract

The DGS diagrams for a normal transducer and a model of a reflector—an elliptic flat-bottom hole—have been calculated via numerical calculation of the integral representation of the normalized amplitude of a detected signal. The boundary of the reflecting surface is specified by the angular-coordinate-dependent distance from the center to the current point on the contour. Examples of calculations are presented. An effect of the shape of the hole on the change in the DGS curves, which is especially pronounced in the near-field zone, has been established.

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Authors and Affiliations

  1. Central Research Institute for Machine-Building Technology, Sharikopodshipnikovskaya ul. 4, Moscow, 115088, Russia

    V. N. Danilov

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  1. V. N. Danilov
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Correspondence to V. N. Danilov.

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Original Russian Text © V.N. Danilov, 2008, published in Defektoskopiya, 2008, Vol. 44, No. 7, pp. 42–52.

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Danilov, V.N. Calculation of DGS diagrams for elliptic flat-bottom holes. Russ J Nondestruct Test 44, 472–479 (2008). https://doi.org/10.1134/S1061830908070048

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