Ultrasonic Testing

Ultrasonic testing (UT) is a non-destructive testing method that uses high-frequency sound waves to evaluate the internal structure and integrity of welded seams. In this method, sound waves are sent to the welded area and the internal defects are detected using reflected waves.

The use of ultrasonic testing in welds allows the determination of defects such as cracks, pores, voids, and slag residues in the internal structure. During the test, ultrasonic waves are sent to the weld surface via a probe. These waves propagate within the material and are reflected when they hit an obstacle (for example, a crack or pore). The reflected waves are collected and analyzed by a receiver, providing information about the location and size of defects in the internal structure.

The main advantages of this method are:

High sensitivity: It detects internal defects with high accuracy.

Depth control: It can also examine defects in deep parts of the welded joint.

Non-destructive: It does not damage the integrity of the structure.

Ultrasonic testing is widely preferred in the quality control of welded joints, especially those used in critical structural components and pressure-exposed pipe and pressure vessel systems.