针对手工焊管道环焊缝相控阵超声检测（PAUT）设计制作了人工模拟自然缺陷，进行了PAUT+超声波衍射时差法（TOFD）检测和射线检测（RT），并对检测结果进行分析。试验结果表明，PAUT、TOFD和RT检测各有优劣，PAUT+TOFD检测对面积型缺陷敏感，但对小的点状类缺陷检出率不高，而PAUT+TOFD同步检测速度是RT检测的2~3倍。

Artificial simulated natural defects were designed and manufactured for the phased array ultrasonic testing (PAUT) of manual welded pipeline circumferential welds. PAUT+ultrasonic time of flight diffraction (TOFD) method and radiographic testing (RT) were performed, and the testing results were analyzed. The experimental results showed that PAUT, TOFD, and RT testing had their own advantages and disadvantages. PAUT+TOFD was sensitive to area type defects, but the detection rate was not high for small point type defects, But the synchronous detection speed of PAUT+TOFD was 2-3 times that of RT detection.