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首页> 外文期刊>ISIJ international >Acoustic Emission during Hydrogen Charging of a Pipeline Steel
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Acoustic Emission during Hydrogen Charging of a Pipeline Steel

机译：管线钢充氢过程中的声发射

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Acoustic emission (AE) during hydrogen-induced cracking (HIC) of low-carbon pipeline steel immersed into H_(2)S containing media was investigated aiming at discriminating between damage mechanisms and getting a better insight on the kinetics of damage. Two kinds of steel samples - sensitive and resistant to hydrogen induced cracking - were tested. Three different kinds of acoustic emission signals were discriminated by a cluster analysis involving either spectral shape recognition or parametric c -means classifier. It is demonstrated that AE is associated with three primary mechanisms involving hydrogen bubbles evolution, sulfide film formation and fracture due to HIC. Hence, AE is shown to be very efficient for quantitative description of hydrogen induced damage accumulation in steels.
机译：研究了低碳管线钢在H_（2）S介质中的氢诱导开裂（HIC）过程中的声发射（AE），目的是区分损伤机理并更好地了解损伤动力学。测试了两种钢样品-对氢致裂纹敏感和耐氢腐蚀。通过涉及频谱形状识别或参数c均值分类器的聚类分析来区分三种不同类型的声发射信号。结果表明，AE与三个主要机理有关，这些机理涉及氢气泡的产生，硫化物膜的形成以及HIC引起的断裂。因此，显示出AE对于定量描述氢在钢中引起的损伤积累非常有效。

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