Sonatest Plc, UK, have developed and patented a new, high frequency dry coupled wheel probe called the Hydroprobe.Ultrasonic non-destructive testing is now often required where the test-piece material must not become wet or saturated with water.This The issue of couplant contamination is of peed particular importance in the aerospace and other safety critical sectors where composites, open cell structures and porous materials are increasingly used.
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