Strain Monitoring of Combustible Gas Implosion Test Based on Fiber Bragg Grating
Strain measurement is an important component in model tests of combustible internal explosions. Strain gauges are used to measure strain in traditional electrical measurement methods and have some limitations, such as susceptibility to electromagnetic interference, short life, and inability to distr...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2019/9858125 |
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| author | Lei Gao Qinghua Zhang Erbing Li Yangyang Sun Zhenglin Zhang Shikun Pu Xiejun Cheng Fengjuan Rong |
| author_facet | Lei Gao Qinghua Zhang Erbing Li Yangyang Sun Zhenglin Zhang Shikun Pu Xiejun Cheng Fengjuan Rong |
| author_sort | Lei Gao |
| collection | DOAJ |
| description | Strain measurement is an important component in model tests of combustible internal explosions. Strain gauges are used to measure strain in traditional electrical measurement methods and have some limitations, such as susceptibility to electromagnetic interference, short life, and inability to distribute. Fiber Bragg gratings (FBGs) are developing into useful sensing tools that can respond to changes in stress, strain, and temperature by changing wavelengths. FBGs have excellent sensing performance, such as long life, antielectromagnetic interference, easy networking, and good reusability. In this paper, FBG sensors are applied to strain monitoring in ethylene flammable implosion experiments. In the ethylene flammable implosion tests, an FBG was placed on the inner surface of the bottom plate of the rectangular steel test device near the detonation vent by the sticking method. The reliability and repeatability of the strain change of the FBG affected by detonation overpressure and combustion were tested at this point. Four explosion tests were carried out. The test results showed that FBG sensors could obtain stable and reliable strain data in all four tests. The strain variation reflects the development of overpressure and combustion in the whole process from ignition. For the strain amplitude formed by overpressure, the minimum was 1.449 με (the third test), and the maximum was 48.181 με (the fourth test).For the strain amplitude step change formed by the deflagration flame front passing the measurement points, the minimum was 1.673 με (the second test), and the maximum was 19.724 με (the fourth test).The strain amplitude produced by the deflagration temperature effect in the four tests ranged from 72.803 με (the first test) to 143.381 με (the fourth test).The results show that FBG sensors can provide reliable and effective strain monitoring data for the experimental study of flammable implosions. |
| format | Article |
| id | doaj-art-c61d13453679414390f44cfea15b83e7 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-c61d13453679414390f44cfea15b83e72025-02-03T05:46:01ZengWileyShock and Vibration1070-96221875-92032019-01-01201910.1155/2019/98581259858125Strain Monitoring of Combustible Gas Implosion Test Based on Fiber Bragg GratingLei Gao0Qinghua Zhang1Erbing Li2Yangyang Sun3Zhenglin Zhang4Shikun Pu5Xiejun Cheng6Fengjuan Rong7College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaCollege of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaArmy Engineering University of PLA, Nanjing 210007, ChinaArmy Engineering University of PLA, Nanjing 210007, ChinaArmy Engineering University of PLA, Nanjing 210007, ChinaArmy Engineering University of PLA, Nanjing 210007, ChinaJiangsu Second Normal University, Nanjing 210013, ChinaArmy Engineering University of PLA, Nanjing 210007, ChinaStrain measurement is an important component in model tests of combustible internal explosions. Strain gauges are used to measure strain in traditional electrical measurement methods and have some limitations, such as susceptibility to electromagnetic interference, short life, and inability to distribute. Fiber Bragg gratings (FBGs) are developing into useful sensing tools that can respond to changes in stress, strain, and temperature by changing wavelengths. FBGs have excellent sensing performance, such as long life, antielectromagnetic interference, easy networking, and good reusability. In this paper, FBG sensors are applied to strain monitoring in ethylene flammable implosion experiments. In the ethylene flammable implosion tests, an FBG was placed on the inner surface of the bottom plate of the rectangular steel test device near the detonation vent by the sticking method. The reliability and repeatability of the strain change of the FBG affected by detonation overpressure and combustion were tested at this point. Four explosion tests were carried out. The test results showed that FBG sensors could obtain stable and reliable strain data in all four tests. The strain variation reflects the development of overpressure and combustion in the whole process from ignition. For the strain amplitude formed by overpressure, the minimum was 1.449 με (the third test), and the maximum was 48.181 με (the fourth test).For the strain amplitude step change formed by the deflagration flame front passing the measurement points, the minimum was 1.673 με (the second test), and the maximum was 19.724 με (the fourth test).The strain amplitude produced by the deflagration temperature effect in the four tests ranged from 72.803 με (the first test) to 143.381 με (the fourth test).The results show that FBG sensors can provide reliable and effective strain monitoring data for the experimental study of flammable implosions.http://dx.doi.org/10.1155/2019/9858125 |
| spellingShingle | Lei Gao Qinghua Zhang Erbing Li Yangyang Sun Zhenglin Zhang Shikun Pu Xiejun Cheng Fengjuan Rong Strain Monitoring of Combustible Gas Implosion Test Based on Fiber Bragg Grating Shock and Vibration |
| title | Strain Monitoring of Combustible Gas Implosion Test Based on Fiber Bragg Grating |
| title_full | Strain Monitoring of Combustible Gas Implosion Test Based on Fiber Bragg Grating |
| title_fullStr | Strain Monitoring of Combustible Gas Implosion Test Based on Fiber Bragg Grating |
| title_full_unstemmed | Strain Monitoring of Combustible Gas Implosion Test Based on Fiber Bragg Grating |
| title_short | Strain Monitoring of Combustible Gas Implosion Test Based on Fiber Bragg Grating |
| title_sort | strain monitoring of combustible gas implosion test based on fiber bragg grating |
| url | http://dx.doi.org/10.1155/2019/9858125 |
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