Abstract
A method which requires two transducers to collect data for ultrasonic imaging is described. Each transducer is used as a combination transmitter/receiver. Then one transducer is used as a transmitter and the other as a receiver. The computer software searches for the echoes which arise from the same defect. Experiments have been performed with both linear and circular apertures. Noise was pre-filtered from the signals to eliminate most of the artefacts. The accuracy obtained in imaging the defects was better than one wavelength in both the longitudinal and lateral direction. This method has also been extended to three-dimensional space where three transducers were used. Some data have been collected.
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© 1989 Plenum Press, New York
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Mak, D.K. (1989). Accurate Reconstruction of Flaws Using a New Imaging Technique. In: Shimizu, H., Chubachi, N., Kushibiki, Ji. (eds) Acoustical Imaging. Acoustical Imaging, vol 17. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0791-4_24
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DOI: https://doi.org/10.1007/978-1-4613-0791-4_24
Publisher Name: Springer, Boston, MA
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