摘要
就ＡＰＩ５Ｌ标准超声波对比标样上几种缺口和钻孔对超声波信号的反射理论，结合其验收标准进行分析，指出用它们对缺陷当量进行判定并不等效，而且存在着某些矛盾。在使用对比标样时要根据其实际需要来选择孔型。
In this paper, the refleCtion theory for untrasonic signal to several notch and hole of UST standard in afl SL and the cheCk standard are contrastly analysed. It is not equivalent to judge the defect equivalent with them and some contradition exist. Therefore, the hole type of standard contrasted piece should be chosen according to the practical requirement.
出处
《焊管》
1996年第3期36-41,共6页
Welded Pipe and Tube
