J0402-3-4 T(0,1)モードガイド波を用いたエルボ管における欠陥検出性能評価([J0402-3]超音波計測・解析法の新展開(3))

抄録

Sensitivity of defect detections using T(0,1) mode guided waves of welded elbow pipes has been experimentally evaluated. The artificial defects were introduced at the outer side of the elbow and the place near the weld-lines. To evaluate the sensitivity, the artificial defects were gradually increased up to 2 mm by 0.05 mm increment. It was confirmed that the sensitivities of the outer side defects at the elbow part was larger than those obtained at the straight part. The experimental results and related discussion were described.