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材料工程  2015 

钢管磁特性对涡流检测影响的研究进展

DOI: 10.11868/j.issn.1001-4381.2015.11.017, PP. 106-112

Keywords: 漏磁场,磁导率,磁特性,钢管,无损检测

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Abstract:

钢管应用于多个重要工业领域,工况恶劣复杂,对其实施无损检测则尤为重要。涡流检测由于具有诸多优点,增添磁饱和器是检测钢管的常用方法,但目前检测时忽视了钢管磁特性的独特影响,认为在饱和磁化后钢管成为非铁磁性管道,机理认识不足会引起缺陷量化评价的失真。简述了钢管涡流检测的机理和方法,分析讨论了影响涡流检测信号的缺陷漏磁场和缺陷区域畸变的磁导率等磁特性因素。指出了钢管内壁缺陷检出造成现有评价手段的混乱,并总结了当前研究的发展趋势,为钢管涡流检测的未来研究方向提供借鉴。

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