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单面焊焊接接头根部结构形式多样,用超声检测单面焊焊接接头时,会产生多种形式的根部结构反射波。按现行超声波检测标准,多种形态的根部缺陷产生的反射回波也具有多种多样的形态。这两种不同性质的回波混淆在一起,会对超声波检测人员的正确判断产生较大的困惑。通过对单面焊焊接接头根部未熔合试件的超声波测试,分析了端角反射回波的特点,尝试利用这些反射回波的特点来对单面焊焊接接头根部未熔合类缺陷进行识别。
Single-sided welded joint root structure of various forms, with ultrasonic testing of single-sided welded joints, will produce a variety of root structure reflected wave. According to the current ultrasonic testing standards, many forms of root defects reflected echo also has a variety of forms. The two different types of echoes mixed together, the ultrasonic testing staff will have a more correct judgment of the big confusion. Based on the ultrasonic testing of unmelted specimens at the root of welded joints, the characteristics of the angle reflection echo are analyzed. The characteristics of these reflected echoes are used to identify the unmelted defects at the root of the welded joints.