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1 范围1 .1 本检验方法是利用 EMAT技术检测材料表面缺陷 (如 :裂纹、裂缝、折叠、冷隔、分层、通漏、未熔合 )的指南。这一技术还可灵敏的检测材料距表面小于或等于瑞利波长的近表面缺陷。1 .2 本检验方法阐述了表面波通过电磁场非接触地耦合到材料中的过程。1 .3 本检验?
1 Scope 1 .1 This test method is a guideline for the detection of material surface defects such as cracks, fissures, folds, cold gaps, delamination, leaks, and fusions using EMAT techniques. This technique also sensitively detects near-surface defects with material less than or equal to the Rayleigh wavelength from the surface. 1.2 This test method describes the process of contactless coupling of surface waves into a material through an electromagnetic field. 1.3 this test?