Design and investigation of a sensitivity-enhanced fiber Bragg grating sensor for micro-strain measurement
| Autor: | Zaide Xu, Jun Peng, Jin Yiming, Shouping Xu, Shuhai Jia |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Battery (electricity) Materials science business.industry Metals and Alloys Linearity 02 engineering and technology Repeatability 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Finite element method Surfaces Coatings and Films Electronic Optical and Magnetic Materials Hysteresis Fiber Bragg grating 0103 physical sciences Optoelectronics Sensitivity (control systems) Electrical and Electronic Engineering 0210 nano-technology business Instrumentation Voltage |
| Zdroj: | Sensors and Actuators A: Physical. 285:437-447 |
| ISSN: | 0924-4247 |
| DOI: | 10.1016/j.sna.2018.11.038 |
| Popis: | The fiber Bragg grating (FBG) sensors are widely used in strain measurement. However, the current FBG sensors are not sensitive enough to monitor the micro-strain. In order to provide a feasible method to monitor the micro-strain of lithium-ion battery, a novel fiber Bragg grating (FBG) strain sensors with enhanced sensitivity was developed in this paper. A lever mechanism was adopted to enhance the sensor sensitivity and flexure hinges as well as serpentine springs were used in sensor structure. The sensor structure dimension was optimized through theoretical calculation and finite element analysis, and the optimized sensor was manufactured and tested. The results of calibration test show that in the measuring range of ±500 μe, the sensor has strain sensitivity of 11.49 pm/μe, good linearity and repeatability as well as tiny hysteresis error. The battery experimental results illustrate there is a same trend between strain and voltage of battery, and a good uniformity under three working modes of battery. This proposed FBG sensor will provide a solution for strain measurement of battery. |
| Databáze: | OpenAIRE |
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