Devices, Systems and Methods of Detecting Defects in Workpieces
This invention relates to devices, systems and methods for use in detecting a defect in a work piece. The device includes a transducer (10) comprising a piezoelectric crystal (11 ) mounted on a tungsten Epoxy backing (12). The transducer (10) is configured to operate in both receive and transmit modes. The transducers (10) can be used in various arrays, with various protocols for determining the mode of operation of any transducer at any particular time. The systems of signal analysis are described for determining the presence of the defect and, in certain cases, the nature of the defect.
ARMITAGE PETER ROBERT [GB]
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