摘要：High-pressure pipeline has significant magneto-mechanical effect in the geomagnetic field. Combined with magnetic inspection technology on the ground, the magnetic anomalies induced by buried pipeline defects can be detected and then be analyzed. But in remote inspection condition, the signal to noise ratio of magnetic signal is too low, and the pipeline magnetic anomalies will be obscured in the complex magnetic background. The difficulty for non-excavation pipeline detection is how to separate its magnetic anomalies from remote magnetic signals. In this paper, a nonlinear structural finite element analysis model was created for pipeline magnetic testing and the properties of three components of the magnetic field are investigated. The Phi 220 mm x 10 mm pipe was detected under the conditions of 8 MPa pipe pressure and 2 m inspection distance, and a signal processing method based on wavelet analysis was also proposed. Experiment results showed that the magnetic anomalies induced by pipe cracks with different depth could be recognized.

关键字：Magnetic methods Monitoring Pipes Signal analysis and processing

ISSN号：0929-6212

卷、期、页：卷: 95 期: 3 页: 2299-2313

发表日期：2017-08-01

影响因子：0.951000

期刊分区（SCI为中科院分区）：四区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：Wireless Personal Communications

参与作者：丁卫霞

第一作者：宋强,彭鹤,顾继俊,帅健

论文类型：期刊论文

论文概要：宋强,丁卫霞,彭鹤,顾继俊,帅健，Pipe Defect Detection with Remote Magnetic Inspection and Wavelet Analysis，Wireless Personal Communications，2017，卷: 95 期: 3 页: 2299-2313

论文题目：Pipe Defect Detection with Remote Magnetic Inspection and Wavelet Analysis