NDT Method
How Ultrasonic Testing Works
A step-by-step explanation of how ultrasonic testing detects flaws and measures thickness using sound waves.
Overview
Ultrasonic testing works on the principle of sound reflection. A transducer converts electrical energy into high-frequency sound waves and couples them into the material through a gel or liquid couplant.
As the sound travels through the material, any change in density — a crack, void or the back wall — reflects part of the energy back. The instrument measures the time and amplitude of these echoes to locate and size defects.
The Process
- Couple the probe to the surface
- Transmit sound waves into the material
- Receive and time the reflected echoes
- Interpret echoes to locate and size defects
Frequently Asked Questions
A step-by-step explanation of how ultrasonic testing detects flaws and measures thickness using sound waves. Contact our team on 0416 689 689 to discuss the equipment, location and inspection scope.
Related Services
Explore complementary inspection scopes. Method, specialist partner and availability are confirmed for the asset and location.