Transcription of Time of Flight Diffraction (TOFD) - High Precision Weld ...
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Time of Flight Diffraction (TOFD) - High Precision Weld ...
INDUSTRIAL SERVICES - time OF Flight Diffraction (TOFD) of Flight Diffraction (TOFD) - high Precision weld InspectionTOFD principle An ultrasonic probe is positioned on either side of the weld , one acting as a transmitter and the other a receiver. The longitudinal sound beam can encounter obstacles on its path, which cause refl ected and diffracted the probes are moved in a parallel motion along the weld , the resultant waveforms are digitized, stored on hard disk and displayed on the video-screen as a grey scale image. The image build up is in effect a through sectional view of the weld examined and can be used for accurate sizing and monitoring of for application Construction weld inspections.
INDUSTRIAL SERVICES - TIME OF FLIGHT DIFFRACTION (TOFD) www.tuv.com Time of Flight Diffraction (TOFD) - High Precision Weld Inspection TOFD principle
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