基于波形特征提取的管道腐蚀缺陷量化研究  

Quantitative Study of Pipeline Erosion Defects Based on Signal Feature Extraction

作　　者：蒋奇[1] 隋青美[1] 

机构地区：[1]山东大学控制科学与工程学院,济南250061

出　　处：《中国机械工程》2004年第23期2074-2077,共4页China Mechanical Engineering

基　　金：天津市自然科学基金资助项目 (993 80 2 411)

摘　　要：针对当前管道腐蚀缺陷检测的研究现状 ,提出采用缺陷漏磁场的切向分量作为漏磁检测仪采样的原始信号 ,将管道内分布的 96路传感器信号插值和周向展开显示 ,定义了缺陷漏磁信号波形的特征量 ,借助多元统计分析方法来定量评价缺陷外形的长、宽、深 ,实验得出该量化缺陷方法有效 ,精度在允许范围内。The research status of pipeline erosion defect inspection was introduced, the components of Magnetic Flux Leakage (MFL) parallel to the surface of pipeline was selected the sampling signals of device, the sampling data of ninety six channel sensors distributed inside the pipeline were interpolated and the outline of MFL field was shown, the characteristics of MFL signals or wave shape were given. The length, width, depth of defect outline are estimated and calculated from statistical method, the quantitative estimation method of pipeline erosion defects is effective from experiments and the errors are allowed.

关 键 词：管道 漏磁场 定量评价 波形 

分 类 号：TB9[一般工业技术—计量学]