| 在用起重机金属磁记忆检测的信号特征及验证 |
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| 引用本文： | 高广兴,沈功田,胡斌,张万岭,李金海,吴占稳.在用起重机金属磁记忆检测的信号特征及验证[J].无损检测,2010(5):317-320. |
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| 作者姓名： | 高广兴 沈功田 胡斌 张万岭 李金海 吴占稳 |
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| 作者单位： | [1]河北大学质量技术监督学院,保定071002 [2]中国特种设备检测研究院,北京100013 |
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| 基金项目： | 国家质检公益性行业科研专项资助项目（07-10-51） |
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| 摘 要： | 使用金属磁记忆检测方法对在役的双梁桥式起重机轨道进行了检测。检测结果表明,起重机轨道的磁记忆信号异常部位多数呈现对称分布,并与起重机工作时轨道的受力点相吻合;而轨道上出现的不对称磁记忆异常信号,是轨道自有应力集中或材料损伤所造成的,这些部位应该成为以后的监测重点。
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| 关 键 词： | 金属磁记忆检测 起重机 应力集中 |
Metal Magnetic Memory Testing Signals Characteristics and its Verification of Working Crane |
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| GAO Guang-Xin,SHEN Gong-Tian,HU Bin,ZHANG Wan-Ling,LI Jin-Hai,WU Zhan-Wen.Metal Magnetic Memory Testing Signals Characteristics and its Verification of Working Crane[J].Nondestructive Testing,2010(5):317-320. |
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| Authors: | GAO Guang-Xin SHEN Gong-Tian HU Bin ZHANG Wan-Ling LI Jin-Hai WU Zhan-Wen |
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| Affiliation: | 1.College of Quality and Technical Supervision,Hebei University,Baoding 071002,China; 2.China Special Equipment Inspection ＆ Research Institute,Beijing 100013,China) |
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| Abstract: | Metal Magnetic Memory（MMM） technology was used to test the double-beam bridge crane rails. The results showed that the most MMM signals were distributed symmetrically in the rails.The location of these MMM signals coincided with the area of the crane orbit.There were some asymmetric abnormal signals of MMM found in the rails.These MMM signals were caused by the own stress concentration or material damage of the rails. These places should be the focus of future testing. |
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| Keywords: | Metal magnetic memory testing Crane Stress concentration |
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