Research on Features of Pipeline Crack Signal Based on Weak Magnetic Method
Quantitative online detection of microcracks in long-distance oil and gas pipelines is an international problem, and the effective detection method is still lacking. In this paper, a mathematical model of non-uniform distribution of crack magnetic charges is established based on the stress distribut...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-02-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/20/3/810 |
| _version_ | 1797999192534155264 |
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| author | Bin Liu Ziqi Liu Ning Luo Luyao He Jian Ren He Zhang |
| author_facet | Bin Liu Ziqi Liu Ning Luo Luyao He Jian Ren He Zhang |
| author_sort | Bin Liu |
| collection | DOAJ |
| description | Quantitative online detection of microcracks in long-distance oil and gas pipelines is an international problem, and the effective detection method is still lacking. In this paper, a mathematical model of non-uniform distribution of crack magnetic charges is established based on the stress distribution laws of pipeline cracks under internal pressure. The weak magnetic signal characteristics of pipeline cracks with different sizes are analyzed. The internal pressure increasing factor of weak magnetic signals are extracted to analyze the corresponding relationship between crack size and weak magnetic signals. The experimental study of the X70 pipeline is carried out. The results show that the axial component of the weak magnetic signal at the crack has a maximum value near the tip, and a minimum value appears in the middle of the crack. The internal pressure increasing factor is introduced to quantify the weak magnetic signal, the crack is in a safe state (not expanding) when the internal pressure increasing factor is positive, the weak magnetic signal has a linear relationship with the crack size. However, the crack is in a dangerous state when the internal pressure increasing factor is negative, and the pipeline crack will expand as the internal pressure increases. |
| first_indexed | 2024-04-11T11:00:47Z |
| format | Article |
| id | doaj.art-52cb0d3bb751459893190f2fe46c8bdf |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T11:00:47Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-52cb0d3bb751459893190f2fe46c8bdf2022-12-22T04:28:36ZengMDPI AGSensors1424-82202020-02-0120381010.3390/s20030810s20030810Research on Features of Pipeline Crack Signal Based on Weak Magnetic MethodBin Liu0Ziqi Liu1Ning Luo2Luyao He3Jian Ren4He Zhang5College of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaCollege of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaCollege of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaCollege of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaCollege of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaCollege of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaQuantitative online detection of microcracks in long-distance oil and gas pipelines is an international problem, and the effective detection method is still lacking. In this paper, a mathematical model of non-uniform distribution of crack magnetic charges is established based on the stress distribution laws of pipeline cracks under internal pressure. The weak magnetic signal characteristics of pipeline cracks with different sizes are analyzed. The internal pressure increasing factor of weak magnetic signals are extracted to analyze the corresponding relationship between crack size and weak magnetic signals. The experimental study of the X70 pipeline is carried out. The results show that the axial component of the weak magnetic signal at the crack has a maximum value near the tip, and a minimum value appears in the middle of the crack. The internal pressure increasing factor is introduced to quantify the weak magnetic signal, the crack is in a safe state (not expanding) when the internal pressure increasing factor is positive, the weak magnetic signal has a linear relationship with the crack size. However, the crack is in a dangerous state when the internal pressure increasing factor is negative, and the pipeline crack will expand as the internal pressure increases.https://www.mdpi.com/1424-8220/20/3/810weak magneticmagnetic chargesignal characteristiccrack |
| spellingShingle | Bin Liu Ziqi Liu Ning Luo Luyao He Jian Ren He Zhang Research on Features of Pipeline Crack Signal Based on Weak Magnetic Method Sensors weak magnetic magnetic charge signal characteristic crack |
| title | Research on Features of Pipeline Crack Signal Based on Weak Magnetic Method |
| title_full | Research on Features of Pipeline Crack Signal Based on Weak Magnetic Method |
| title_fullStr | Research on Features of Pipeline Crack Signal Based on Weak Magnetic Method |
| title_full_unstemmed | Research on Features of Pipeline Crack Signal Based on Weak Magnetic Method |
| title_short | Research on Features of Pipeline Crack Signal Based on Weak Magnetic Method |
| title_sort | research on features of pipeline crack signal based on weak magnetic method |
| topic | weak magnetic magnetic charge signal characteristic crack |
| url | https://www.mdpi.com/1424-8220/20/3/810 |
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