磁化渦電流探傷試験の数値解析評価法の検討(<特集>鉄鋼業における最新の計測,制御,システム技術)

概要

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High quality products are demanded in steel production. Therefore quality measurement technology corresponding to it becomes more and more important. Eddy current testing is generally used for surface inspection. Because this technique enables high speed inspection without contacting objects. However, eddy current testing using magnetization is used because magnetic noises are large in steel samples. On the other hand, the technique is governed by an electromagnetic phenomenon, but it is difficult to understand this phenomenon intuitively. In recent years the phenomenon elucidation of the eddy current testing by numerical analysis was became possible by combining with development of numerical analysis technology and exploiting of markedly improved computers. Therefore establishment of the numerical analysis for this testing is expected to provide a useful method of separating signals of defects from magnetic noises.
社団法人日本鉄鋼協会の論文
2004-11-01