Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator
The pillar porcelain insulator is an important protection device that is related to the safety of the entire power grid. Small damage of it may even cause a disaster. Nonlinear output frequency response functions (NOFRFs) can well reflect the nonlinear characteristics of early damage in the system....
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/2841254 |
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| _version_ | 1832566329444401152 |
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| author | Hanling Mao Weili Tang Yingxiang Huang Hanying Mao Zhenfeng Huang Xinxin Li |
| author_facet | Hanling Mao Weili Tang Yingxiang Huang Hanying Mao Zhenfeng Huang Xinxin Li |
| author_sort | Hanling Mao |
| collection | DOAJ |
| description | The pillar porcelain insulator is an important protection device that is related to the safety of the entire power grid. Small damage of it may even cause a disaster. Nonlinear output frequency response functions (NOFRFs) can well reflect the nonlinear characteristics of early damage in the system. This paper uses the NOFRF entropy-based harmonic excitation detection method to detect the damage of the structure. Its effect has been verified by using metal specimens. Then, the pulse hammer detection and harmonic detection are carried out to detect the early-stage damage of the pillar porcelain insulator, and they achieve a good result, which verifies that the harmonic detection method can detect the early-stage damage in the pillar porcelain insulator as well. In addition, the orthogonal test of the simulated breathing crack model is used to search the greatest influence of the parameters of crack on the detection index. Through the orthogonal analysis, the results show that among the lengths, positions, and angles of the crack, the length of crack is the main factor that affects the detection index. |
| format | Article |
| id | doaj-art-2fd346d4ba6a4a57ae5cc8443f954743 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-2fd346d4ba6a4a57ae5cc8443f9547432025-02-03T01:04:22ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/28412542841254Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain InsulatorHanling Mao0Weili Tang1Yingxiang Huang2Hanying Mao3Zhenfeng Huang4Xinxin Li5School of Mechanical Engineering, Guangxi University, Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology, Nanning 530004, ChinaCollege of Light Industry and Food Engineering, Guangxi University, Nanning 530004, ChinaNanning Railway Administration Quality and Technical Inspection Institute, Nanning 530005, ChinaSchool of Mechanical and Transportation Engineering, Guangxi University of Science and Technology, Liuzhou 542506, ChinaSchool of Mechanical Engineering, Guangxi University, Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology, Nanning 530004, ChinaSchool of Mechanical Engineering, Guangxi University, Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology, Nanning 530004, ChinaThe pillar porcelain insulator is an important protection device that is related to the safety of the entire power grid. Small damage of it may even cause a disaster. Nonlinear output frequency response functions (NOFRFs) can well reflect the nonlinear characteristics of early damage in the system. This paper uses the NOFRF entropy-based harmonic excitation detection method to detect the damage of the structure. Its effect has been verified by using metal specimens. Then, the pulse hammer detection and harmonic detection are carried out to detect the early-stage damage of the pillar porcelain insulator, and they achieve a good result, which verifies that the harmonic detection method can detect the early-stage damage in the pillar porcelain insulator as well. In addition, the orthogonal test of the simulated breathing crack model is used to search the greatest influence of the parameters of crack on the detection index. Through the orthogonal analysis, the results show that among the lengths, positions, and angles of the crack, the length of crack is the main factor that affects the detection index.http://dx.doi.org/10.1155/2020/2841254 |
| spellingShingle | Hanling Mao Weili Tang Yingxiang Huang Hanying Mao Zhenfeng Huang Xinxin Li Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator Shock and Vibration |
| title | Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator |
| title_full | Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator |
| title_fullStr | Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator |
| title_full_unstemmed | Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator |
| title_short | Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator |
| title_sort | research on nofrf entropy based detection method for early damage of pillar porcelain insulator |
| url | http://dx.doi.org/10.1155/2020/2841254 |
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