Using Ultrasound Waves for Thickness Measurement
INSPECTION AND TESTING METHODS
Ultrasonic waves propagate in a given material at a specific speed. A sample of the same material and of known thickness is used to calibrate the thickness gauge.
An ultrasonic wave is emitted by a mono- or bi-element longitudinal wave transducer through the material and is reflected by the opposite face of the wall. Measuring the round-trip time of the wave then makes it possible to determine the thickness of the wall.
- Access to only one side of the component is required.
- Easy to implement.
- Immediate results.