TOFD与RT的对比检测研究及分析

Contrast and Analysis on TOFD and RT Detections

TOFD检测方法可以实现对焊缝的连续检测,检测效率高,检测效果良好。糯扎渡水电站工程在压力钢管和蜗壳焊缝检测中对TOFD与RT检测进行了对比。对两种方法检出的所有焊接缺陷逐个验证分析,结果表明TOFD在中厚板焊接缺陷的检出率上优于RT。

The TOFD method can aehieve the continuous detection of weld with high efficiency and good effects. The results of TOFD and RT detection on the wehts of penstock and spiral case in Nuozhadu Hydropower Station are compared. The contrast on all weld defects one by one show that the TOFD method has higher defect detection rate than RT method for medium thickness steel plate.