聚乙烯管连接中大量使用电熔接头,其质量的好坏直接影响管道系统的安全。分析了超声聚焦检测技术对聚乙烯管电熔接头各类缺陷的检出能力。在此基础上,运用相控阵超声技术及B扫描实时成像超声方法检测大量含缺陷接头,对比超声成像图与接头实剖图,发现该方法有较高的检测灵敏度和检出精度,可以应用于工程实践。 Polyethylene pipe joints in the extensive use of fused joints, the quality of a direct impact on the safety of the pipeline system. The ability of ultrasonic focusing detection to detect various defects of polyethylene pipe fused joints was analyzed. On this basis, using phased array ultrasound technology and B-scan real-time imaging ultrasound to detect a large number of defective joints, contrast the ultrasonic imaging and the actual joint profile, found that the method has higher detection sensitivity and detection accuracy, and can be applied In engineering practice.