基于FBGs的快速和常规固化环氧树脂基复合材料的固化残余应变研究

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (11): 21-26.

基于FBGs的快速和常规固化环氧树脂基复合材料的固化残余应变研究

祁一信, 鞠苏, 江大志^*

国防科技大学空天科学学院,长沙410073

收稿日期:2018-07-09 出版日期:2018-11-28 发布日期:2018-11-28
通讯作者: 江大志(1962-),男,博士,教授,主要从事超轻质复合材料结构设计和纳米聚合物复合材料方面的研究,jiangdz@nudt.edu.cn。
作者简介:祁一信(1991-),女,博士研究生,主要从事树脂基复合材料方面的研究。
基金资助:
国家自然科学基金(U1537101,11202231)

STRAIN HISTORY IN FAST AND CONVENTIONAL CURING EPOXY MATRIX COMPOSITES INVESTIGATED BY FBGs

QI Yi-xin, JU Su, JIANG Da-zhi^*

Department of Materials Science and Engineering, National University of Defense Technology, Changsha 410073, China

Received:2018-07-09 Online:2018-11-28 Published:2018-11-28

摘要/Abstract

摘要： 在纤维增强树脂基复合材料的固化过程中,由于纤维与树脂的热膨胀系数不匹配和树脂的固化体积收缩而产生的固化残余应变对组装设计和控制复合材料的性能至关重要。概述了有损和无损检测固化残余应变的方法;采用光纤布拉格光栅分别检测了快速和常规固化环氧树脂基复合材料的固化残余应变,并结合环氧树脂的流变性对其应变历史进行了分析研究。10层碳纤维单向布增强环氧树脂基复合材料的温度和应变历史表明,固化温度在80 ℃时,快速和常规固化复合材料第5层的固化反应放热峰值温度分别为133.7 ℃和106.3 ℃,快速和常规固化复合材料第5层的固化残余应变分别为-4074.7 με和-2660.8 με。

关键词: 快速固化树脂, 固化残余应变, 光纤布拉格光栅, 碳纤维增强环氧基复合材料

Abstract: Cure residual strain, which is generated by curing shrinkage of resin and mismatch of the coefficient of thermal expansion of the resin and the fiber in curing process of fiber reinforced resin matrix composite, is essential to allow better design and control of properties of the resin matrix composite. In this paper, nondestructive and destructive testing of the cure residual strain were introduced. Fiber Bragg grating sensors (FBGs) were located in ten-ply unidirectional carbon-fiber fabrics reinforced fast and conventional curing epoxy matrix composites manufactured by wet lay-up to measure strain history. The result show that the peak temperature due to curing exothermal reaction was 133.7 ℃ in the 5th ply in the fast curing composite when the cure temperature profile was settled at 80 ℃, while it was 106.3 ℃ in the conventional curing composite. Cure residual strain in the 5th ply in the fast and conventional curing composites were -4074.7 με and -2660.8 με, respectively.

Key words: fast curing resin, cure residual strain, fiber Bragg grating sensors, carbon fiber reinforced epoxy matrix composite

中图分类号:

TB332

祁一信, 鞠苏, 江大志. 基于FBGs的快速和常规固化环氧树脂基复合材料的固化残余应变研究[J]. 玻璃钢/复合材料, 2018, 0(11): 21-26.

QI Yi-xin, JU Su, JIANG Da-zhi. STRAIN HISTORY IN FAST AND CONVENTIONAL CURING EPOXY MATRIX COMPOSITES INVESTIGATED BY FBGs[J]. Fiber Reinforced Plastics/Composites, 2018, 0(11): 21-26.

参考文献

[1] Xiangyi Geng, Mingshun Jiang, Linlin Gao, et al. Sensing characteristics of FBG sensor embedded in CFRP laminate[J]. Measurement, 2017, 98(4): 199-204.
[2] Sophia N Economidou, Dimitris Karalekas. Optical sensor-based measurements of thermal expansion coefficient in additive manufacturing[J]. Polymer testing, 2016, 51(4): 117-121.
[3] 翟保利. 紫外光快速固化乙烯基酯树脂及其复合材料研究[D]. 武汉: 武汉理工大学, 2007.
[4] Sorensen L, Gmür T, Botsis J. Residual strain development in an AS4/PPS thermoplastic composite measured using fibre Bragg grating sensors[J]. Composites Part A, 2006, 37(2): 270-281.
[5] P P Parlevliet, H E N Bersee, A Beukers. Residual stresses in thermoplastic composites, a study of the literature-Part Ⅰ: Formation of residual stresses[J]. Composites Part A, 2006, 37(11): 1847-1857.
[6] Loleï Khoun, Rui de Oliveira, Véronique Michaud, et al. Investigation of process-induced strains development by fibre Bragg grating sensors in resin transfer moulded composites[J]. Composites part A, 2011, 42(3): 274-282.
[7] G Pereira, M McGugan, L P Mikkelsen. Method for independent strain and temperature measurement in polymeric tensile test specimen using embedded FBG sensors[J]. Polymer testing, 2016, 50(4): 125-134.
[8] Tomasz Garstka, N Ersoy, K D Potter, et al. In situ measurements of through-the-thickness strains during processing of AS4/8552 composite[J]. Composite part A, 2007, 38(12): 2517-2526.
[9] M Mulle, H Wafai, A Yudhanto, et al. Process monitoring of glass reinforced polypropylene laminates using fiber Bragg gratings[J]. Composites science and technology, 2016, 123(4): 143-150.
[10] 孙九霄. 基于布拉格光栅传感器的复合材料固化及冲击损伤监测研究[D]. 武汉: 武汉理工大学, 2011.
[11] 田恒. 基于FBG传感器的碳纤维复合材料固化残余应力研究[D]. 武汉: 武汉理工大学, 2012.
[12] P P Parlevliet, H E N Bersee, A Beukers. Residual stresses in thermoplastic composites, a study of the literature-Part Ⅱ: Formation of residual stresses[J]. Composites Part A, 2007, 38(3): 651-665.
[13] A Suzuki, T Sugimura, T Kunugi. Mechanical properties and superstructure of isotactic polypropylene fibers prepared by continuous vibrating zone-drawing[J]. Journal of applied polymer science, 2001, 81(4): 600-608.
[14] Leng J S, Asundi A. Real-time cure monitoring of smart composite materials using extrinsic Fabry-Perot interferometer and fiber Bragg grating sensors[J]. Smart Mater Struct, 2002, 4(2): 249-251.
[15] Jung K, Jin Kang T. Cure monitoring and internal strain measurement of 3-D hybrid braided composites using fiber Bragg grating sensor[J]. J Compos Mater, 2007, 41(12): 1499-1519.
[16] Khoun L, Hubert P. Cure shrinkage characterization of an epoxy resin system by two in situ measurement methods[J]. Polym Compos, 2010, 31(9): 1603-1610.
[17] M Giordano, A Laudati, J Nasser, et al. Monitoring by a single fiber Bragg grating of the process induced chemo-physical transformations of a model thermoset[J]. Sensor Actuators A, 2004, 113(2): 166-173.
[18] Philippe A Olivier. A note upon the development of residual curing strains in carbon/epoxy laminates. Study by thermomechanical analysis[J]. Composites part A, 2006, 37(4): 602-616.
[19] Susann Hannuscha, Martin Stockmanna, Jörn Ihlemanna. Experimental method for residual stress analysis with fibre Bragg grating sensors[J]. Materials Today, 2006, 3(4): 979-982.
[20] Haixiao Hu, Shuxin Li, Jihui Wang, et al. FBG-based real-time evaluation of transverse cracking in cross-ply laminates[J]. Composite structures, 2016, 138(4): 151-160.
[21] Nanya Li, Yingguang Li, Xiaozhong Hao, et al. A comparative experiment for the analysis of microwave and thermal process induced strains of carbon fiber/bismaleimide composite materials[J]. Composites science and technology, 2015, 106(106): 15-19.
[22] Nanya Li, Yingguang Li, Xiang Hang, et al. Analysis and optimi-zation of temperature distribution in carbon fiber reinforced composite materials during microwave curing process[J]. Journal of materials processing technology, 2014, 214(3): 544-550.