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What is an eddy current test?

An eddy current test is a non-destructive testing method that uses electromagnetic induction to detect flaws or changes in the properties of conductive materials. It works by inducing eddy currents in the material being tested, which creates an electromagnetic field that interacts with the material and produces a signal. This signal can be analyzed to determine the presence of defects or changes in the material’s properties, such as cracks, corrosion, or variations in wall thickness. Eddy current testing is commonly used in industries such as aerospace, automotive, and power generation for the inspection of critical components such as pipes, tubes, and welds.