不等厚平板对接接头TOFD检测深度定位计算  

TOFD Depth Location Calculation of Unequal Thickness Plate Butt Joint

作　　者：杨育伟 梁楠 朱稳 Yang Yuwei;Liang Nan;Zhu Wen(Xi'an Special Equipment Inspection Institute,Xi'an 710065)

机构地区：[1]西安特种设备检验检测院,西安710065

出　　处：《中国特种设备安全》2021年第12期62-68,共7页China Special Equipment Safety

摘　　要：本文首先讨论了等厚平板对接接头TOFD检测时仪器内置深度定位计算程序所默认的等腰三角形的本义,然后讨论了不等厚平板对接接头TOFD检测时如何建立模拟等腰三角形,以适应仪器内置深度定位计算程序。介绍了显示深度与实际深度的修正计算方法,并通过对三种不同探头布置方式的显示深度测量值与计算值的误差计算,验证了上述计算方法的正确性。This paper firstly discussed the basic meaning of isosceles triangle which was the default of depth location calculation program in TOFD detection of equal thickness plate butt joint.Then how to set up simulated isosceles triangle in TOFD testing of unequal thickness plate butt joint to adapt to the default calculation program of depth location was discussed.We proposed the modified calculation method between the measured depth and the actual depth,and verified the correctness of the above calculation method by calculating the error between the measured depth and the calculated value of three different probe layout.

关 键 词：不等厚平板对接接头 TOFD检测 深度定位计算 模拟探头间距PCS' 

分 类 号：X924[环境科学与工程—安全科学]