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Error in Measurements of Flaws with the Use of Systems with Coherent Data Processing

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Abstract

In recent years, systems with coherent data processing of the “AVGUR” series designed by the “Ekho+” NPTs have been widely used at Russian atomic power plants for nondestructive testing of pipelines. The paper contains results of an analysis of the effect of practical testing parameters (instability of the acoustic contact, parameters of piezoelectric transducers, etc.) on the quality of the flaw image and the error and accuracy in determining flaw parameters: the coordinates of the flaw depth, height, and length. The errors in determining the flaw parameters in the primary and repeated inspection are distinguished. It is shown that the error reduces in the repeated inspection. The results of comparing the data obtained in destructive and nondestructive testing of austenite welded joints of pipelines from stainless steel 325 × 15 mm in diameter are given.

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Authors and Affiliations

  1. “Ekho+” NPTs, Moscow, Russia

    V. G. Badalyan

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  1. V. G. Badalyan
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Badalyan, V.G. Error in Measurements of Flaws with the Use of Systems with Coherent Data Processing. Russian Journal of Nondestructive Testing 39, 179–188 (2003). https://doi.org/10.1023/B:RUNT.0000009070.23189.ff

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  • DOI: https://doi.org/10.1023/B:RUNT.0000009070.23189.ff

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