Ultrasonic correlation analysis in quefrency domain for structural imaging

Kazumi Matsushige, Hirotaka Okabe

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An ultrasonic quefrency (Fourier transformation of frequency) analysis was utilized to image the internal structure of materials. The imaging method comprises four processes: (l) calculation of spectrum, (2) division by the power spectrum of a pulse or other component, (3) Fourier transformation into the quefrency domain, and (4) analysis and imaging in the quefrency domain. In this study, we applied this method to image the defects in carbon-fiber-reinforced plastics (CFRP). Compared with the conventional ultrasonic images, this method was proven to provide greatly improved images, suggesting that this method is a powerful tool for nondestructive inspection of composite materials including CFRP.

Original languageEnglish
Pages (from-to)3621-3627
Number of pages7
JournalJapanese Journal of Applied Physics
Volume32
Issue number8 R
DOIs
Publication statusPublished - Jan 1 1993

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Carbon fiber reinforced plastics
ultrasonics
Ultrasonics
Imaging techniques
carbon fiber reinforced plastics
Fourier transformation
Power spectrum
Inspection
Defects
Composite materials
division
power spectra
inspection
composite materials
defects
pulses

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Ultrasonic correlation analysis in quefrency domain for structural imaging. / Matsushige, Kazumi; Okabe, Hirotaka.

In: Japanese Journal of Applied Physics, Vol. 32, No. 8 R, 01.01.1993, p. 3621-3627.

Research output: Contribution to journalArticle

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