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检验服务:

无损检测--- NDT (NON-DESTRUCTIVE TESTING),就是利用声、光、磁和电等特性,在不损害或不影响被检测对象使用性能的前提下,检测被检对象中是否存在缺陷或不均匀性,给出
缺陷的大小、位置、性质和数量等信息,进而判定被检对象所处技术状态(如合格与否、剩余寿命等)的所有技术手段的总称。
无损检验的方法很多,据美国国家宇航员调研分析,其认为可分为六大类约70余种。但在实际应用中比较常见的有以下五种,也就是我们所说的常规的无损检测方法:
一、常规无损检测方法
目视检测 VISUAL TESING (缩写 VT);
超声检测 ULTRASONTC TESING (缩写 UT);
射线检测 RADIOGRAPHIC TEXTING (缩写 RT);
磁粉检测 MAGNETIC PARTICLE TESTING (缩写 MT);
渗透检测 PENETRANT TESTING (缩写 PT);
涡流检测 EDDY CURRENT TESTING (缩写 ET);
声发射 AC OUSTIC EMISSION (缩写 AE)。
二、非常规无损检测方法
泄漏检测 LEAK TESTING (缩写 LT);
衍射波时差法超声波检测技术 TIME OF FLIGHT DIFFRACTION (缩写 TOFD);
导波检测 GUIDED WAVE TESTING;