STUDY FOR MECHNICAL PROPERTIES OF THE COMPOSITE LAMINATES EMBEDDED WITH THE OPTICAL FIBERS

Abstract

Abstract: In this paper, Fiber Bragg Grating (FBG) was embedded into the composite laminates and the effect of the number of the FBG on the tensile and compression properties of the composite laminates were studied, also the micrograph of interlayer. Furthermore, the embedded FBGs were used as the sensors to monitor the tensile strains and compared with the strain gage. It was shown that, when FBGs were embedded into the laminates along the fiber direction, the 0° tensile strength and modulus of the composites were slightly declined. Whereas, when FBGs were embedded into the laminates perpendicular to the fiber direction, the 90° tensile strength and modulus of the composites were slightly increased. For the compression performance, because of the broken-down strength of FBG was lower which will induced the stress concentration inside the composite laminates, and therefore lead to the decrease of the compression properties. It was shown from the micrographs of interlayer that when FBGs were embedded perpendicular to the fiber direction, resin-rich area will be clearly observed around the FBGs.

Key words: fiber bragg grating, composite iaminates, mechanical properties, tensile strain

CLC Number:

TB332

LIU Gang, ZHANG Bin, ZHOU Yu-jing, LI Wei-dong. STUDY FOR MECHNICAL PROPERTIES OF THE COMPOSITE LAMINATES EMBEDDED WITH THE OPTICAL FIBERS[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(7): 16-22.

References

[1] Rodrigo A. Silva-Munoz, Roberto A. Lopez-Anido. Structural health monitoring of marine composite structural joints using embedded fiber Bragg grating strain sensors[J]. Composite Structures, 2009, 89:224-234.
[2] 沈军,谢怀勤.航空用复合材料的研究与应用进展[J]. 玻璃钢/复合材料, 2006,9(5):48-54.
[3] 杨红,陶宝祺,梁大开,邱浩,曹振新.树脂基复合材料中埋入大直径光纤性能的研究[J]. 玻璃钢/复合材料, 2000,(05):10-13.
[4] 赵琳,张博明.基于光纤光栅的复合材料动态称重系统研究[J]. 玻璃钢/复合材料, 2010,(9):40-43.
[5] 赵海涛,张博明,武湛君,等.光纤光栅智能复合材料基础问题研究[J]. 传感器与微系统, 2007,26(12):27-30.
[6] Pascal Mauron, Philipp M.Nellen, Urs Sennhauser. High-strength proof-test parameters for fiber Bragg grating sensors[J]. Proceeding of SPIE, 2001, 4215:183-191.
[7] Kuang K S C., Kenny R, Whelan M P, et al. Embedded fiber Bragg grating sensors in advanced composite materials[J]. Composites Science and Technology, 2001, 61:1379-1387.
[8] Takeda S, Okabe Y, Yamamoto T, et al. Detection of edge delamination in CFRP laminates under cyclic loading using small-diameter FBG sensors[J]. Composites Science and Technology, 2003,63:1885-1894.
[9] 张条兰,李炜,王平. 用Bragg光栅监测树脂流动及复合材料拉伸性能[J]. 玻璃钢/复合材料, 2010,(3):40-43.
[10] Baere I D, Luyckx G, Voet E, et al. On the feasibility of optical fibre sensors for strain monitoring in thermoplastic composites under fatigue loading conditions[J]. Optics and Lasers in Engineering,2009,47:403-411.
[11] Takeda S, Minakuchi S, Okabe N, et al. Delamination monitoring of laminated composites subjected to low-velocity impact using small-diameter FBG sensors[J]. Composites: Part A, 2005,36:903-908.
[12] Takeda N, Okabe Y, Mizutani T. Damage detection in composites using optical fibre sensors[J]. Preceeding of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2007, 221: 498-598.
[13] 杨建良,郭照华.光纤网络用于监测复合材料结构状态的实验研究[J].无损检测,2001,23(4):150-152.
[14] 孙良新,徐宁光,任吉,等.复合材料结构内埋光纤网络测试其内部损伤试验研究[J].实验力学,1996,11(3):322-325.
[15] 杜善义,王彪.复合材料细观力学[M]. 北京:科学出版社,1997.251-280.