介绍ASME(美国机械工程师学会)最新版(2013)第Ⅴ卷《无损检测》第四章中有关承压设备相控阵超声成像检测的主要规定.评析由承压设备制造卷界定的焊缝超声检测基于不同验收条件的两种方法:一是基于制造质量验收标准的超声检测要求;二是基于断裂力学验收标准的超声检测要求.两种要求的共同点是都要用计算机成像法检测和评定焊缝,后者特别注重于缺陷表征和定量.意在对照国标国情,找差距、纠偏误,使中国企业正确执行ASME有关规范的水平更上一个台阶.

This article describes the major standard practices on phased array ultrasonic testing (PAUT) for pressure equipment presented in the updated edition of ASME Code(2013),Section Ⅴ NDE,Article 4.It is the first part:evaluation of two inspection methods of welds specified by the referencing Code Section on manufacture and design based on the different acceptance criteria,one is UT requirements for workmanship based acceptance criteria,another is UT requirements for fracture mechanics based acceptance criteria.A common ground of both standard practices is using Computer imaging (CI) techniques to inspect and evaluate welded joints of pressure equipment,and the second one specifically focuses on flaw characterization and sizing.The intention is to compare with our industrial standards and to look at our national condition,thus we can find out the gap and correct errors in this field,so that making the Chinese enterprises performing the referencing ASME Code Section rise to a higher level.