What Is an Eddy Current Inspection?

The detection method using electromagnetic fields and electromagnetic induction between metals is one of the basic methods for non-destructive testing of metal materials. Electromagnetic induction is sensitive to many test parameters, so the eddy current detection method is a multi-purpose detection method, but the measurement data is also affected by various "interference factors". Therefore, it is necessary to make full use of useful information and more effectively Only when the interference information is suppressed can the detection result be accurate and reliable. The industrial application of the eddy current test method began in Germany before the Second World War. The development of research work in each period is mainly reflected in the analysis and processing of electromagnetic signals