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NDT-AWS2015Handout

Ultrasonic

Ultrasonic Testing

Ultrasonic Inspection (Pulse-Echo) High frequency sound waves are introduced into a material and they are reflected back from surfaces or flaws. Reflected sound energy is displayed versus time, and f inspector can visualize a cross section of the specimen showing the depth of features that reflect sound. initial pulse crack echo back surface echo crack 0 2 4 6 8 10 plate Oscilloscope, or flaw detector screen

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