EPRO PR6424

A: If a conductive material intercepts the magnetic field, eddy currents are generated and the high-frequency radio signal loses power. The closer the conductive material is to the probe tip, the more power the signal loses. This power loss triggers a change in the voltage of the driver.

A: Generally, eddy current testing can detect defects at depths up to about half an inch (12.7 millimeters). However, this can vary based on the specific conditions of the test.

A: Eddy current testing equipment performs three basic functions: generating, receiving, and displaying.

A: Thus eddy currents are a cause of energy loss in alternating current (AC) inductors, transformers, electric motors and generators, and other AC machinery, requiring special construction such as laminated magnetic cores or ferrite cores to minimize them.

A: The two major applications of eddy current testing are surface inspection and tubing inspections. Surface inspection is used extensively in the aerospace industry, but also in the petrochemical industry. The technique is very sensitive and can detect tight cracks.

A: Eddy currents are current loops formed over conductor surfaces due to changing magnetic flux. They are useful in induction heating, levitating, electromagnetic damping, and electromagnetic braking. They can be minimized by adding slots in the conductor surface & laminating.

A: Eddy current testing is primarily used for inspecting electrically conductive materials. This includes metals like steel, aluminum, copper, and alloys, as well as conductive coatings, welds, and pipes. It's also applicable to non-magnetic or mildly ferromagnetic materials like nickel alloys and some stainless steels.