Several other methods such as remote field testing rft, flux leakage and barkhausen noise also use this principle. Eddy current testing equipment contains a conductive metal coil which is electrified with an alternating current. It is capable of working as either a standalone machine, or mated with a mectron qualifier, lt, or mi8500 machine. How effectively can eddy current testing detect cracks. Eddy current crack testing is made easy by criterion ndts probes and instruments. While standard eddy current testing provides many advantages over other ndt options for crack detection, eddy current array eca can provide even more thorough and accurate results than typical ect techniques. Eddy current techniques for crack detection in metal.
Eddy current crack testing by criterion ndt youtube. The process relies upon a material characteristic known as electromagnetic induction. Using eddy current array, analysts can detect minute flaws with a single pass of the instrument. Eddy current testing is an inspection method that can be used for a variety of purposes including the detection of cracks and corrosion, material and coating thickness measurement, material identification and, in certain materials, heat treatment condition. They integrate into production environments to allow inline testing. Eddy current testing ect for crack detection is one of the most effective nondestructive testing ndt approaches currently available for surface and nearsurface flaw detection. The rcd9500 is an eddy current crack detection system designed for a wide variety of fasteners, and flanged parts. The current generates a magnetic field around the coil. Fastener inspection system using eddy current to detect cracks in the head and flange of a fastener. The eddy current method is widely used to inspect metallic aircraft components for surface cracks and corrosion damage.
In addition to static and dynamic balancing equipment, bti also engineers and manufactures other types of industrial precision measurement and testing equipment, including dimensional gages, mass centering equipment, eddy current crack detection systems, surface finish measurement equipment, nvh equipment noise vibration and harshness. Eddy current inspection is one of several ndt methods that use the principal of electromagnetism as the basis for conducting examinations. The best ect instruments have enough power to measure thin materials accurately and detect minuscule deviations with ease. Crack detection systems precision measuring and test.
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