Eddy Current Testing

Eddy Current Testing

Eddy current testing

is a rapid and accurate technique used to detect discontinuities in the tubing, heat exchangers, condensers, wires, plates, etc with induced electrical currents that flow in a circular path. They get their name from "eddies" that are formed when a liquid or gas flows in a circular path around obstacles when conditions are right.

TCR uses electromagnetic induction to detect flaws in conductive materials. Eddy current testing can detect very small cracks in or near the surface of the material. The surfaces need minimal preparation, and physically complex geometries can be investigated using this method.

Eddy current testing

is also performed for alloy separation, determining treatment conditions, for creating electrical conductivity and for measuring coating thickness. The location of repair welds, girth welds, and seam welds may also be detected on ground-machined surfaces.

TCR has an in-house team of Eddy Current Testing professionals with deep expertise in inspecting a number of tubing including Four frequency, eight channel eddy current system capable of inspecting any ferromagnetic (RFET) or non-ferromagnetic heat exchanger tube in service.

TCR Advanced has the best testing devices that are portable, contact-less and provide immediate feedback including equipment for performing ECT (RFET for magnetic materials) - Olympus MS5800 and ECT48.

Eddy Current Advantages:

  • Can detect pitting, puncture, cracks, etc. from the inner or outer side of the tube
  • Requires less time as compared to IRIS
  • The depth of attack can be estimated

Eddy Current Limitations:

  • Requires more time when compared to acoustic pulse reflectometry
  • Cannot detect a circumferential location of a defect in the tube