基于FBG传感器的碳纤维复合材料内部热应变监测

玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (2): 75-78.

基于FBG传感器的碳纤维复合材料内部热应变监测

贾卫芳, 孙宝忠^*

东华大学纺织学院,上海201620

收稿日期:2015-07-29 出版日期:2016-02-20 发布日期:2016-02-20
通讯作者: 孙宝忠(1978-),男,教授,主要从事复合材料冲击动力学研究,sunbz@dhu.edu.cn。
作者简介:贾卫芳(1989-),男,硕士,主要从事智能纺织结构复合材料研究。
基金资助:
国家自然科学基金(11272087)

INTERNAL THERMAL STRAIN MEASUREMENT OF COMPOSITES WITHEMBEDDED FIBER BRAGG GRATING SENSORS

JIA Wei-fang, SUN Bao-zhong^*

College of Textiles, Donghua University, Shanghai 201620, China

Received:2015-07-29 Online:2016-02-20 Published:2016-02-20

摘要/Abstract

摘要： 将光纤布拉格光栅(Fiber Bragg Grating,简称“FBG”)传感器分别埋入单向板和平纹机织层压复合材料中,采用Sm125型光纤光栅解调仪测试两种复合材料在20~100℃温度范围内的内部热应变,分析单向板和平纹机织层压复合材料在仅受温度作用下内部热应变变化特征。结果表明,FBG传感器可以准确测量复合材料内部热应变变化;单向板和平纹机织层压复合材料的内部热应变均随温度升高而增大;织物结构影响复合材料内部热应变,且同一温度点,平纹机织层压复合材料内部热应变较单向板大。

关键词: 碳纤维复合材料, FBG传感器, 内部热应变

Abstract: This paper studies the internal thermal strain measurement under the temperature range of 20~100℃ by FBG sensors embedded in the center of unidirectional (UD) laminates, and carbon fiber/epoxy plain woven laminates with the Sm125 sensor interrogator. The internal thermal strain properties of both composites under a thermal load were analyzed. The results showed that the internal thermal strains of both composites could be accurately measured using a referenced FBG sensor and the FBG sensors embedded in the center of materials under a thermal load. In addition, the thermal expansion coefficients of both composites were discussed to determine the variation behavior with the increase of temperature. Also, the internal thermal strains of both composites increase with the increasing temperature. It was also found that fabric structure affect the internal thermal strain, and at the same temperature point, the internal thermal strain of plain woven laminates is larger than that of UD laminates.

Key words: CFRP, FBG sensor, internal thermal strain

中图分类号:

TB332

贾卫芳, 孙宝忠. 基于FBG传感器的碳纤维复合材料内部热应变监测[J]. 玻璃钢/复合材料, 2016, 0(2): 75-78.

JIA Wei-fang, SUN Bao-zhong. INTERNAL THERMAL STRAIN MEASUREMENT OF COMPOSITES WITHEMBEDDED FIBER BRAGG GRATING SENSORS[J]. Fiber Reinforced Plastics/Composites, 2016, 0(2): 75-78.

参考文献

[1] Du W, Tao X M, Tam H Y, et al. Fundamentals and applications of optical fiber Bragg grating sensors to textile structural composites[J]. Composite Structures, 1998, 42(3): 217-229.
[2] Dewynter V, Ferdinand P, Bocherens E, et al. Embedded Fiber Bragg Grating sensors for industrial composite cure monitoring[J]. Journal of Intelligent Material Systems and Structures, 1998, 9(10): 785-787.
[3] Degriech J, De Waele W, Verleysen P. Monitoring of fibre reinforced composites with embedded optical fibre Bragg sensors, with application to filament wound pressure vessels[J]. Ndt & E International, 2001, 34(4): 289-296.
[4] De Baere I, Voet E, Van Paepegem W, et al. Strain monitoring in thermoplastic composites with optical fiber sensors: Embedding process, visualization with micro-tomography, and fatigue results[J]. Journal of Thermoplastic Composite Materials, 2007, 20(5): 453-472.
[5] De Oliveira R, Ramos C A, Marques A T. Health monitoring of composite structures by embedded FBG and interferometric Fabry-Perot sensors[J]. Computers & Structures, 2008, 86(3-5): 340-346.
[6] Xianghua L, Chunsheng Z, Jun L, et al. The internal strain of three-dimensional braided composites with co-braided FBG sensors[J]. Optics and Lasers in Engineering, 2007, 45(7): 819-826.
[7] 董晓马, 张为公. 光纤智能复合材料的研究及其应用前景[J]. 测控技术, 2004, (10): 3-5.
[8] Huang S, Ohm M M, Leblanc M, et al. Continuous arbitrary strain profile measurements with fiber Bragg gratings[J]. Smart Materials & Structures, 1998, 7(2): 248-256.
[9] Maaskant R, Alavie T, Measures R M, et al. Fiber-optic Bragg grating sensors for bridge monitoring[J]. Cement & Concrete Composites, 1997, 19(1): 21-33.
[10] Ferreira M S, Vieira J, Frias C, et al. Simultaneous measurement of strain and temperature using fiber Bragg grating sensors embedded in hybrid composite laminates[J]. Measurement Science & Technology, 2011, 22(4):253-815.
[11] Kyungho J, Tae J K. Cure monitoring and internal strain measurement of 3-D hybrid braided composites using fiber Bragg grating sensor [J]. Journal of Composite Materials, 2007, 41(12): 1499-1519.
[12] 王殿富, 万里冰, 张博明. 光纤传感器在复合材料固化监测中的应用[J]. 哈尔滨工业大学学报, 2002,6 (05): 710-714.
[13] 刘小会,袁慎芳. 基于光纤光栅的编织复合材料多点热应变监测[J]. 南京航空航天大学学报, 2004, (05): 658-661.
[14] 周玉敬,宋昊,刘刚,等. 内埋光纤光栅的复合材料层压板拉伸应变研究[J]. 材料工程, 2012, (09): 58-61.
[15] Kuang K S C, Kennyr R, Wehlan M P, et al. Embedded fibre Bragg grating sensors in advanced composite materials[J]. Composites Science and Technology, 2001, 61(10): 1379-1387.