Applying the Algorithm of Calculation in the Frequency Domain to Ultrasonic Tomography

D. O. Dolmatov, D. G. Demyanyuk, D. A. Sednev, R. V. Pinchuk

Research output: Contribution to journalArticle

Abstract

Applying ultrasonic-tomography systems makes it possible to precisely determine the shape and dimensions of flaws with the aim of establishing the degree to which the flaws influence safe operation of tested objects. This problem is solved by using special algorithms that make use of echo-signals recorded by an ultrasonic transducer to generate synthesized images of flaws in the sample. The use of phased arrays in ultrasonic tomography is explained by their ability to provide exhaustive data about the internal structure of a test object, thus allowing formation of the high-quality synthesized images of flaws in the object. Increasing the speed of ultrasonic tomography by using phased arrays necessitates the development and implementation of fast data-processing algorithms. In this connection, of interest are calculation algorithms in the frequency domain, which ensure the high speed of producing synthesized images. An ultrasonic-tomography algorithm is proposed that is based on calculations in the frequency domain. The algorithm takes the complex nature of the propagation of ultrasonic waves into account and is connected with the presence of media with different acoustic properties (e.g., in the case of immersion tests). Possibilities offered by the algorithm are investigated by computer simulations using the licensed CIVA 2016 software package and experimentally.

Original languageEnglish
Pages (from-to)232-236
Number of pages5
JournalRussian Journal of Nondestructive Testing
Volume54
Issue number4
DOIs
Publication statusPublished - 1 Apr 2018

Fingerprint

Tomography
tomography
ultrasonics
Ultrasonics
Defects
defects
phased arrays
Acoustic properties
Ultrasonic transducers
acoustic properties
Ultrasonic waves
ultrasonic radiation
Software packages
submerging
echoes
transducers
computerized simulation
high speed
computer programs
propagation

Keywords

  • nondestructive ultrasonic testing
  • phased arrays
  • ultrasonic tomography
  • ultrasonic-tomography algorithms

ASJC Scopus subject areas

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

Cite this

Applying the Algorithm of Calculation in the Frequency Domain to Ultrasonic Tomography. / Dolmatov, D. O.; Demyanyuk, D. G.; Sednev, D. A.; Pinchuk, R. V.

In: Russian Journal of Nondestructive Testing, Vol. 54, No. 4, 01.04.2018, p. 232-236.

Research output: Contribution to journalArticle

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