TOFD检测盲区的研究及其解决方法  

Research on Dead Zone of TOFD Test and Settlements

作　　者：郝晓军[1] 牛晓光[1] 代真[1] 

机构地区：[1]河北省电力研究院,石家庄050021

出　　处：《河北电力技术》2009年第5期26-28,共3页Hebei Electric Power

摘　　要：针对TOFD在检测时焊缝上下表面存在盲区容易造成缺陷漏检的问题,对检测盲区进行理论分析,通过试验验证了TOFD检测盲区符合理论计算值,为此设计制作了"TOFD+A"型脉冲反射超声波复合探头,建议采用复合检测的方法来弥补TOFD检测的不足,降低TOFD检测盲区对焊缝检测带来的不利影响。Because it should produce dead zone during testing of Time-Of-Flight-Diffraction（TOFD）,so as to cannot examinr the bug,this paper analyzes how to examine the dead zone theoretically.TOFD dead zone accords with through test validated,so designs ＂OFD＋A＂mpulse reflect ultrasonic compound probe,suggestes to use compound test method to fetch up the disadvantages of TOFD,and reduces the disbennifit effect.

关 键 词：TOFD 检测盲区 复合检测 

分 类 号：TG115.28[金属学及工艺—物理冶金]