Flaw detection with ultrasonic backscatter signal envelopes

Yongfeng Song, Christopher M. Kube, Zuoxiang Peng, Joseph A. Turner, Xiongbing Li

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Ultrasound is a prominent nondestructive testing modality for the detection, localization, and sizing of defects in engineering materials. Often, inspectors analyze ultrasonic waveforms to determine if echoes, which stem from the scattering of ultrasound from a defect, exceed a threshold value. In turn, the initial selection of the threshold value is critical. In this letter, a time-dependent threshold or upper bound for the signal envelope is developed based on the statistics governing the scattering of ultrasound from microstructure. The utility of the time-dependent threshold is demonstrated using experiments conducted on sub-wavelength artificial defects. The results are shown to enhance current nondestructive inspection practices.

Original languageEnglish (US)
Pages (from-to)EL142-EL148
JournalJournal of the Acoustical Society of America
Volume145
Issue number2
DOIs
StatePublished - Feb 1 2019

Fingerprint

nondestructive tests
envelopes
ultrasonics
thresholds
defects
sizing
scattering
stems
inspection
echoes
waveforms
statistics
engineering
microstructure
wavelengths
Defects
Ultrasound

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Cite this

Song, Yongfeng ; Kube, Christopher M. ; Peng, Zuoxiang ; Turner, Joseph A. ; Li, Xiongbing. / Flaw detection with ultrasonic backscatter signal envelopes. In: Journal of the Acoustical Society of America. 2019 ; Vol. 145, No. 2. pp. EL142-EL148.
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Flaw detection with ultrasonic backscatter signal envelopes. / Song, Yongfeng; Kube, Christopher M.; Peng, Zuoxiang; Turner, Joseph A.; Li, Xiongbing.

In: Journal of the Acoustical Society of America, Vol. 145, No. 2, 01.02.2019, p. EL142-EL148.

Research output: Contribution to journalArticle

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