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Ultrasound Vibrothermography Applications for Nondestructive Discontinuity Detection

In this paper, three application examples of nondestructive testing (NDT) utilizing ultrasonic vibrothermography are p resented. The thermal signature of discontinuities is simpler to detect when the discontinuities themselves generate thermal emissions. Mechanical waves in the ultrasonic frequency range efficiently activate discontinuities to generate heat sources, which are then detected by an infrared camera.

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