SERVICES >> ADVANCED NDT HEAD E&B TUBES

Eddy Current Testing (ECT)

Eddy Current Technique (ECT) is based on measuring the impedance of a coil. The impedance of the coil changes as the electromagnetic field interacts with the material. Initially, the coil is placed in the tube and balanced on the sound material. The probe is then pulled and variations in coil impedance recorded. The impedance changes are related to the type and size of defect.

ECT can be used to inspect Non-Ferrous Tubes (Eg.SS304/316) Brass, Titanium, Inconel, Monel Copper-nickel etc.

It is well suited for the detection and reliable sizing of the following types of Defects

• Pitting
• Localized corrosion
• Cracks

It may required to use different types of probes based on the types of tube damage expected. Very fast inspection speeds of up to 2 meters/second may be achieved using automated probe pullers.

Signal Display