Advanced Photoacoustic Imaging Using Full Matrix Capture Data Acquisition

Benjamin Knight-Gregson, Stephen Mosey, Miles Weston, Patricia Scully, Anthony Peyton, Claire Davis

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

    Abstract

    Full Matrix Capture (FMC), when used with the Total Focusing Method (TFM), may offer an improvement on the Synthetic Aperture Focusing Technique (SAFT) algorithm. FMC is a data acquisition process which captures A-scan (time-amplitude) data for every transmitterreceiver combination of elements in an array. The technique uses a ‘transmit on one and receive on all’ data capture approach. This work reports on an experimental laser ultrasound setup capable of synthesising an ultrasonic array and thus being able to collect the data needed to perform FMC. An aluminium block with several side drilled holes at 15 mm depth from the top surface has been inspected using laser based SAFT and FMC techniques. The B-scan reconstructions clearly show the response from the side drilled holes in an easy to interpret form. It was found that the maximum improvement in indication signal to noise ratio (SNR) using the FMC & TFM technique was 2.9 dB when compared to SAFT.
    Original languageEnglish
    Title of host publicationhost publication
    Publication statusPublished - 29 Jun 2015
    Event4TH INTERNATIONAL SYMPOSIUM ON LASER ULTRASONICS & ADVANCED SENSING - Evanston, USA
    Duration: 29 Jun 2015 → 2 Jul 2015

    Conference

    Conference4TH INTERNATIONAL SYMPOSIUM ON LASER ULTRASONICS & ADVANCED SENSING
    CityEvanston, USA
    Period29/06/15 → 2/07/15

    Keywords

    • FMC
    • SAFT
    • LUT
    • Laser ultrasound
    • NDT
    • NDE
    • Photoacoustic
    • Full Matrix Capture

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    • Electromagnetic Sensing Group

      Peyton, A. (PI), Fletcher, A. (Researcher), Daniels, D. (CoI), Conniffe, D. (PGR student), Podd, F. (PI), Davidson, J. (Researcher), Anderson, J. (Support team), Wilson, J. (Researcher), Marsh, L. (PI), O'Toole, M. (PI), Watson, S. (PGR student), Yin, W. (PI), Regan, A. (PGR student), Williams, K. (Researcher), Rana, S. (Researcher), Khalil, K. (PGR student), Hills, D. (PGR student), Whyte, C. (PGR student), Wang, C. (PGR student), Hodgskin-Brown, R. (PGR student), Dadkhahtehrani, F. (PGR student), Forster, S. (PGR student), Zhu, F. (PGR student), Yu, K. (PGR student), Xiong, L. (PGR student), Lu, T. (PGR student), Zhang, L. (PGR student), Lyu, R. (PGR student), Zhu, R. (PGR student), She, S. (PGR student), Meng, T. (PGR student), Pang, X. (PGR student), Zheng, X. (PGR student), Bai, X. (PGR student), Zou, X. (PGR student), Ding, Y. (PGR student), Shao, Y. (PGR student), Xia, Z. (PGR student), Zhang, Z. (PGR student), Khangerey, R. (PGR student) & Lawless, B. (Researcher)

      1/10/04 → …

      Project: Research

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