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| Performance Change Law and Failure Mechanism of Inertial Devices in Accelerated Storage Environment |
| Received:October 24, 2018 Revised:March 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.03.016 |
| KeyWord:inertia device quartz flexible accelerometer accelerated storage test failure mechanism |
| Author | Institution |
| ZHANG Shi-yan |
1. Southwest Technology and Engineering Research Institute, Chongqing , China |
| LIU Jun |
1. Southwest Technology and Engineering Research Institute, Chongqing , China |
| HUANG Bo |
1. Southwest Technology and Engineering Research Institute, Chongqing , China |
| ZHU Lei |
1. Southwest Technology and Engineering Research Institute, Chongqing , China |
| CHEN Yuan |
1. Southwest Technology and Engineering Research Institute, Chongqing , China |
| WEI Xiao-qin |
1. Southwest Technology and Engineering Research Institute, Chongqing , China |
| YANG Chao-ming |
2. Xi′an Modern Control Technology Institute, Xi′an , China |
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| Abstract: |
| Objective To research the accelerated storage performance degradation rules and analyze the weakness and the failure mechanisms of inertia device. Methods Accelerated storage test of inertial devices was developed; the zero offset of quartz flexible accelerometer was tested; and the microstructure and structural damage were detected by electron microscopy, infrared microscopy and gas chromatography-mass spectrometry. In allusion to changes of quartz flexible accelerometer in the accelerated storage test, the microcosmic mechanism of environmental factors such as temperature was analyzed; and the internal cause of the degradation of macro properties was explained. Results In the inertial navigation system, the zero bias of the quartz flexible accelerometer exceeded the threshold value after 4 cycles of high temperature test. Conclusion The weakness of the inertial navigation system is the binder in the quartz flexible accelerometer. During the high temperature test, the plasticizer of di (2-ethylhexyl) phthalate (DEHP) is decomposed to volatile matter, and the biphenyl A of epoxy resin is also volatilized. When the accelerometer is cooled from high temperature to room temperature, the two kinds of volatiles are moved to the bottom of the pendulum according to the pendulum, and the surface of the torque sensor is adhered. As a result, the pendulum cannot work effectively. |
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