Page 326 - CITS - Welder - Trade Practical

WELDER - CITS

- Ultrasonic Testing is a non-invasive inspection technique that uses high-frequency sound waves to evaluate
the internal structure of weld joints and materials.

- This method is particularly useful for identifying flaws such as cracks, voids, inclusions, and porosity that may
compromise the weld’s strength.
- The principle behind ultrasonic testing lies in the transmission of sound waves into the material being inspected
and the interpretation of the echoes that bounce back.
- Longitudinal waves, also known as compression waves or “L-waves,” are a fundamental type of ultrasonic
wave used in testing.
- These waves involve the vibration of particles in the same direction as the wave’s propagation.
- In weld joint testing, L-waves are effective in detecting volumetric defects such as voids and inclusions.
- Their ability to penetrate deeply into materials makes them an essential tool for assessing the internal quality
of welds.

Wear protective clothing.

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CITS : CG & M - Welder - Exercise 94