基于频率跟踪法的管道腐蚀监测方法  

Pipeline Corrosion Monitoring Method Based on Frequency Tracking Method

作　　者：陈高木 杨丹[1,2] 汪洋 王涛 CHEN Gaomu;YANG Dan;WANG Yang;WANG Tao(Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education,Wuhan University of Science and Technology,Wuhan Hubei 430081,China;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan Hubei 430081,China;Precision Manufacturing Institute,Wuhan University of Science and Technology,Wuhan Hubei 430081,China;Silicon Steel Department,Wuhan Iron&Steel Co.,Ltd.,Wuhan Hubei 430083,China)

机构地区：[1]武汉科技大学冶金装备及其控制教育部重点实验室,武汉430081 [2]武汉科技大学机械传动与制造工程湖北省重点实验室,武汉430081 [3]武汉科技大学精密制造研究院,武汉430081 [4]武汉钢铁有限公司硅钢部,武汉430083

出　　处：《传感技术学报》2023年第7期1148-1152,共5页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金项目(51808417,51375354);湖北省教育厅青年基金项目(Q20131104)。

摘　　要：针对管道冲刷腐蚀问题,提出了一种基于压电主动式频率跟踪法的管道腐蚀监测方法。根据理论分析并结合有限元仿真分析,得到了管道结构的模态频率随腐蚀深度的变化规律,为实验选取对腐蚀较敏感的监测频率提供了参考。搭建了实验系统,在管道结构同一横截面两侧粘贴压电片,一侧激发扫频信号,另一侧接收其响应信号。进行了管道在不同腐蚀深度情况下的实验,对响应信号的峰值频率进行提取分析,实验结果表明:管道结构的峰值频率随腐蚀深度的增大呈单调递减关系,从而可通过分析管道结构的峰值频率来确定管道的腐蚀状况。仿真结果与实验结果相一致,为管道腐蚀监测提供了一种准确便捷的新方法,在工程中具有很好的应用前景。Aiming at the problem of pipeline corrosion,a pipeline corrosion monitoring method based on piezoelectric active frequency tracking method is proposed.According to the theoretical analysis combined with the finite element simulation analysis,the variation of the modal frequency of the pipeline structure with the corrosion depth is obtained,which provides a reference for the selection of the monito-ring frequency that is more sensitive to corrosion in the experiment.The experimental system is set up.Piezoelectric patches are pasted on both sides of the same cross section of the pipeline structure,one side exciting the frequency sweep signal,and the other side receiving its response signal.The experiments of pipelines under different corrosion depths are carried out,and the peak frequency of the response sig-nal is extracted and analyzed.The experimental results show that the peak frequency of the pipeline structure has a monotonically decrea-sing relationship with the increase of the corrosion depth,so that the corrosion status of the pipeline structure can be determined by analy-zing the peak frequency of the pipeline structure.The simulation results are consistent with the experimental results,which provides an ac-curate and convenient new method for pipeline corrosion monitoring,and has a good application prospect in engineering.

关 键 词：管道冲刷腐蚀 腐蚀监测 频率跟踪 有限元仿真 

分 类 号：TB551[理学—物理] TP274[理学—声学]