厚板用渦電流探傷プローブによる溶接部の探傷
Weld Inspection Using Eddy Current Testing Probe for Thick-walled Plates
著者:
内一 哲哉 Tetsuya UCHIMOTO 高木 敏行 Toshiyuki TAKAGI 佐藤 一彦 Kazuhiko SATO 黄 皓宇 Haoyu HUANG
発刊日:
公開日:
BeadsEddy current testingProbeThick-walled platesWelding area
概要
The authors have proposed a novel eddy current testing(ECT) probe for thick-walled plates. A basic concept of the probe is that a couple of differential pick-up coils is arranged between two exciting coils carrying currents opposite to each other. This arrangement allows strong eddy currents opposite to scan surfaces and the weak decay of eddy currents in the thickness direction. In this study, the present probe was applied to ECT of welding area. For the purpose, experiments were carried out using INCONEL718 specimen with thickness of 7.0mm and SUS304 specimen with thickness of 8.0mm. Both specimens have welded parts with beads. The present probe successfully detected the defect although a conventional pancake probe did not, which supports for the robustness of the probe against noises of welded parts.
