Abstract
After reviewing the examination methods traditionally used for detecting localized defects (ultrasonic testing and visual inspection) an original examination method based on the eddy current technique is presented. Specific examples of application are then used to illustrate the ability of this technique to detect defects which are hard to reveal with other methods. The interlocking of the eddy current and ultrasonic techniques is illustrated: the capabilities of each method are developed and the defect characteristics corresponding to the indications are described. Finally, the advantages of combining the visual, ultrasonic and eddy current examination techniques are analyzed and the paper concludes by referring to the quality improvement obtained for the same high level of manufacturing productivity.
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