New speckle noise suppression technique using cross-correlation of array sub-apertures in ultrasonic NDE of coarse grain materials

Timothy Lardner, Minghui Li, Rui Gongzhang, Anthony Gachagan

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

6 Citations (Scopus)

Abstract

In ultrasonic NDE, materials with coarse grains are difficult to inspect because a significant portion of energy will be reflected by the grains which cause speckle noise when imaging. Coarse grain materials are widely used in industry therefore a suitable inspection technique must be developed. This paper presents Spatially Averaged Sub-Array Correlation Imaging (SASACI), an advanced method that reduces speckle noise. SASACI was validated through comparison with the Total Focusing Method. A mean noise reduction of over 20dB SNR was observed when inspecting a highly scattering nickel alloy at 5MHz with a 128 element array.
LanguageEnglish
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
EditorsD.O. Thompson, D.E. Chimenti
Place of PublicationMelville
Pages865-871
Number of pages7
Volume32A and 32B
DOIs
Publication statusPublished - 2013
Event39th Annual Review of Progress in Quantative Nondestructive Evaluation (QNDE) - Denver, United States
Duration: 15 Jul 201220 Jul 2012

Publication series

NameAIP Conference Proceedings
PublisherAIP
Volume1511
ISSN (Print)0094-243X

Conference

Conference39th Annual Review of Progress in Quantative Nondestructive Evaluation (QNDE)
CountryUnited States
CityDenver
Period15/07/1220/07/12

Fingerprint

Speckle
Ultrasonics
Imaging techniques
Nickel alloys
Noise abatement
Inspection
Scattering
Industry

Keywords

  • ultrasound
  • beamforming
  • NDE
  • speckle
  • noise suppression technique
  • cross-correlation
  • ultrasonic NDE
  • coarse grain materials
  • array
  • sub-apertures

Cite this

Lardner, T., Li, M., Gongzhang, R., & Gachagan, A. (2013). New speckle noise suppression technique using cross-correlation of array sub-apertures in ultrasonic NDE of coarse grain materials. In D. O. Thompson, & D. E. Chimenti (Eds.), Review of Progress in Quantitative Nondestructive Evaluation (Vol. 32A and 32B, pp. 865-871). (AIP Conference Proceedings; Vol. 1511). Melville. https://doi.org/10.1063/1.4789135
Lardner, Timothy ; Li, Minghui ; Gongzhang, Rui ; Gachagan, Anthony. / New speckle noise suppression technique using cross-correlation of array sub-apertures in ultrasonic NDE of coarse grain materials. Review of Progress in Quantitative Nondestructive Evaluation . editor / D.O. Thompson ; D.E. Chimenti. Vol. 32A and 32B Melville, 2013. pp. 865-871 (AIP Conference Proceedings).
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abstract = "In ultrasonic NDE, materials with coarse grains are difficult to inspect because a significant portion of energy will be reflected by the grains which cause speckle noise when imaging. Coarse grain materials are widely used in industry therefore a suitable inspection technique must be developed. This paper presents Spatially Averaged Sub-Array Correlation Imaging (SASACI), an advanced method that reduces speckle noise. SASACI was validated through comparison with the Total Focusing Method. A mean noise reduction of over 20dB SNR was observed when inspecting a highly scattering nickel alloy at 5MHz with a 128 element array.",
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Lardner, T, Li, M, Gongzhang, R & Gachagan, A 2013, New speckle noise suppression technique using cross-correlation of array sub-apertures in ultrasonic NDE of coarse grain materials. in DO Thompson & DE Chimenti (eds), Review of Progress in Quantitative Nondestructive Evaluation . vol. 32A and 32B, AIP Conference Proceedings, vol. 1511, Melville, pp. 865-871, 39th Annual Review of Progress in Quantative Nondestructive Evaluation (QNDE), Denver, United States, 15/07/12. https://doi.org/10.1063/1.4789135

New speckle noise suppression technique using cross-correlation of array sub-apertures in ultrasonic NDE of coarse grain materials. / Lardner, Timothy; Li, Minghui; Gongzhang, Rui; Gachagan, Anthony.

Review of Progress in Quantitative Nondestructive Evaluation . ed. / D.O. Thompson; D.E. Chimenti. Vol. 32A and 32B Melville, 2013. p. 865-871 (AIP Conference Proceedings; Vol. 1511).

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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N2 - In ultrasonic NDE, materials with coarse grains are difficult to inspect because a significant portion of energy will be reflected by the grains which cause speckle noise when imaging. Coarse grain materials are widely used in industry therefore a suitable inspection technique must be developed. This paper presents Spatially Averaged Sub-Array Correlation Imaging (SASACI), an advanced method that reduces speckle noise. SASACI was validated through comparison with the Total Focusing Method. A mean noise reduction of over 20dB SNR was observed when inspecting a highly scattering nickel alloy at 5MHz with a 128 element array.

AB - In ultrasonic NDE, materials with coarse grains are difficult to inspect because a significant portion of energy will be reflected by the grains which cause speckle noise when imaging. Coarse grain materials are widely used in industry therefore a suitable inspection technique must be developed. This paper presents Spatially Averaged Sub-Array Correlation Imaging (SASACI), an advanced method that reduces speckle noise. SASACI was validated through comparison with the Total Focusing Method. A mean noise reduction of over 20dB SNR was observed when inspecting a highly scattering nickel alloy at 5MHz with a 128 element array.

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KW - beamforming

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KW - array

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Lardner T, Li M, Gongzhang R, Gachagan A. New speckle noise suppression technique using cross-correlation of array sub-apertures in ultrasonic NDE of coarse grain materials. In Thompson DO, Chimenti DE, editors, Review of Progress in Quantitative Nondestructive Evaluation . Vol. 32A and 32B. Melville. 2013. p. 865-871. (AIP Conference Proceedings). https://doi.org/10.1063/1.4789135