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Features of applying complexly modulated signals in ultrasonic flaw detection

  • Acoustic Methods
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Abstract

The use of complexly modulated signals during ultrasonic testing of articles with high integral ultrasonic attenuation is substantiated. On the basis of concepts of the optimal-filtering theory, phase-manipulated and frequency-modulated signals most suitable for ultrasonic testing are chosen and the main characteristics of various complexly modulated signals are analyzed. The advantage of using phase-manipulated and frequency-modulated signals in ultrasonic flaw detection for ensuring a high testing resolution and a high sensitivity is shown. It has been revealed that the application of state-of-the-art circuitry components allows the use of various properties of complexly modulated signals and creation of new ultrasonic methods and devices on this basis.

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Authors and Affiliations

  1. Moscow Power Institute (Technical University), ul. Krasnokazarmennaya 17, Moscow, 111250, Russia

    V. K. Kachanov & I. V. Sokolov

Authors
  1. V. K. Kachanov
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  2. I. V. Sokolov
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Correspondence to V. K. Kachanov.

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Original Russian Text © V.K. Kachanov, I.V. Sokolov, 2007, published in Defektoskopiya, 2007, Vol. 43, No. 12, pp. 18–42.

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Kachanov, V.K., Sokolov, I.V. Features of applying complexly modulated signals in ultrasonic flaw detection. Russ J Nondestruct Test 43, 790–808 (2007). https://doi.org/10.1134/S1061830907120029

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  • DOI: https://doi.org/10.1134/S1061830907120029

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