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Diffuse field full matrix capture for near surface ultrasonic imaging

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)44-48
Number of pages5
JournalUltrasonics
Volume82
Early online date18 Jul 2017
DOIs
DateAccepted/In press - 15 Jul 2017
DateE-pub ahead of print - 18 Jul 2017
DatePublished (current) - 1 Jan 2018

Abstract

This article reports a technique for near-surface ultrasonic array imaging. Information equivalent to an undelayed full matrix of inter-element responses is produced through cross-correlation of a later time diffuse full matrix. This reconstructed full matrix lacks the nonlinear effects of early time saturation present in a directly acquired response. Consequently the near-surface material information usually obscured by this effect is retrieved. Furthermore it is shown that a hybrid full matrix formed through a temporally weighted sum of coherent and reconstructed matrices allows for effective near-surface and bulk material imaging from a single direct-contact experimental realisation.

    Research areas

  • Diffuse fields, Green's functions, Imaging, Ultrasonics

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  • Full-text PDF (accepted author manuscript)

    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at http://www.sciencedirect.com/science/article/pii/S0041624X1730197X . Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 347 KB, PDF document

    Licence: CC BY-NC-ND

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