Applying the Algorithm of Calculation in the Frequency Domain to Ultrasonic Tomography of Layered Inhomogeneous Media Using Matrix Antenna Arrays

D. O. Dolmatov, D. A. Sednev, A. N. Bulavinov, R. V. Pinchuk

Research output: Contribution to journalArticle

Abstract

Abstract: To ensure the high speed of composing synthesized images with matrix antenna arrays, industrial ultrasonic-tomography systems require computationally efficient spatiotemporal signal-processing algorithms. FFT-based algorithms with calculations in the frequency domain are of great interest in this connection. At the same time, the algorithms must output high-quality results under various conditions of ultrasonic tomography. In ultrasonic tomography of multilayered structures, the nonparallelism and, in the limiting case, curvilinearity of the boundaries of layers in the test object relative to the scanning plane is one of the factors seriously reducing the algorithm efficiency. In this article, we propose an algorithm for calculating three-dimensional tomographic images in the frequency domain using matrix phased arrays with compensation for the tilt of the test object relative to the scanning plane when using an immersion acoustic-contact technique. The effectiveness of the proposed method has been confirmed experimentally.

Original languageEnglish
Pages (from-to)499-506
Number of pages8
JournalRussian Journal of Nondestructive Testing
Volume55
Issue number7
DOIs
Publication statusPublished - 1 Jul 2019

Fingerprint

antenna arrays
Antenna arrays
Tomography
tomography
ultrasonics
Ultrasonics
matrices
Scanning
scanning
fast Fourier transformations
phased arrays
Fast Fourier transforms
submerging
signal processing
Signal processing
Acoustics
high speed
acoustics
output

Keywords

  • matrix phased antenna arrays
  • synthetic aperture focusing technique
  • ultrasonic nondestructive testing
  • ultrasonic tomography

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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AU - Pinchuk, R. V.

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