Development of an adaptive eddy current device for non-destructive pipe testing

Supported by the Federal Ministry for Research and Technology, an adaptive multiple frequency eddy current device has been developed with computer connection as well as the evaluating algorithms necessary for faultdisturber separation. The application of the device is for places where fault and disturber signals have strong phase similarities or where the readings overlap each other in wide parts. The signal processing according to the principle of the pattern recognition reduces the amount of testing data to easy-to-interpret Yes/No information regarding the fault signal catalog applied to the test sample, so that an automatically operating on-line inspection is possible. (orig.)