01:08 May-17-2002 Rolf Diederichs Director, Editor, Publisher, Internet, PHP MySQL NDT.net, Germany, Joined Nov 1998 598
NDT.net May issue
The NDT.net May issue focuses on ultrasonic phased arrays. http://www.ndt.net/v07n05.htm
Where Ultrasonic Testing needs several transducers the use of an Ultrasonic Phased Array is a good choice. The inspected sample can thus be quickly scanned by electronically steering the beam axis or focusing the beam. Beam multiplexing can be used to reduce the number of scan lines when inspecting a wide surface. The beam is quickly multiplexed along a long probe, allowing scans of a wide area at a time, reducing the number of mechanical passes. Of course the ultrasonic instrument must provide all necessary capabilities for driving and evaluating the phased array.
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