STUDY ON VIBRATION PROPERTIES OF CFRP AT HIGH TEMPERATURES BASED ON FBG

Abstract

Abstract: Based on experimental strain modal tests,the vibration properties of carbon fiber reinforced polymer (CFRP) plate at different elevated temperatures from 25 ℃ to 190 ℃ were investigated using fiber Bragg grating (FBG) as dynamic strain sensors. The 1st and 2nd frequency and vibration mode of CFRP cantilever beam at room temperature were obtained by finite element method. Bending vibration tests were conducted on CFRP cantilever beam at different temperatures through pulse hammer hitting and the 1st and 2nd natural frequency at different elevated temperatures were obtained by Fast Fourier Transform (FFT). The results showed that, the 1st and 2nd natural frequency decreased with the temperature rise, and the stiffness has changed permanently compared with those before heating.

Key words: fiber bragg grating, carbon fiber reinforced polymer, high temperatures, vibration properties

CLC Number:

TB332

XIA Ping, YANG Hai-ru, TAN Yue-gang. STUDY ON VIBRATION PROPERTIES OF CFRP AT HIGH TEMPERATURES BASED ON FBG[J]. Fiber Reinforced Plastics/Composites, 2019, 0(12): 24-28.

References

[1] 彭鹤轩. 碳纤维复合材料的应用和展望[J]. 现代盐化工, 2018.
[2] 陈康达, 赵福全, 郝瀚, 等. 碳纤维复合材料在汽车轻量化上的应用现状及发展前景展望[C]//2018中国汽车工程学会年会. 2018.
[3] Al-Lami A, Hilmer P, Sinapius M. Eco-efficiency assessment of manufacturing carbon fiber reinforced polymers (CFRP) in aerospace industry[J]. Aerospace science and technology, 2018, 79: 669-678.
[4] 刘文光, 陈国平, 贺红, 等. 结构振动疲劳研究综述[J].工程设计学报, 2012, 19 (1): 1-8.
[5] 肖寿庭, 杜修德. 飞机结构振动疲劳问题[C]//第六届全国疲劳学术会议论文集(下). 厦门: 1993: 634.
[6] Adams R D, Maheri M R. Damping in advanced polymer-matrix composites[J]. Journal of Alloys & Compounds, 2003, 355(1): 126-130.
[7] Tsai J L, Chang N R. 2-D analytical model for characterizing flexural damping responses of composite laminates[J]. Composite Structures, 2009, 89(3): 443-447.
[8] Rebillat M, Boutillon X. Measurement of relevant elastic and damping material properties in sandwich thick plates[J]. Journal of Sound & Vibration, 2011, 330(25): 6098-6121.
[9] Vescovini R, Bisagni C. A procedure for the evaluation of damping effects in composite laminated structures[J]. Progress in Aerospace Sciences, 2015, 78: 19-29.
[10] Lau K T. Structural health monitoring for smart composites using embedded FBG sensor technology[J]. Materials Science & Technology, 2014, 30(13): 1642-1654.
[11] Di Sante R. Fibre optic sensors for structural health monitoring of aircraft composite structures: recent advances and applications [J]. Sensors, 2015, 15(8): 18666-18713.
[12] Geng X Y, Lu S Z, Jiang M S, et al. Research on FBG-Based CFRP structural damage identification using BP neural network[J]. Photonic Sensors, 2018, 8(2): 168-175.
[13] Kosters E, Van Els, T J. Structural health monitoring and impact detection for primary aircraft structures[C]//Fiber Optic Sensors and Applications Ⅶ. Orlando, FL, USA: 2010: 7677.
[14] Akay E, Yilmaz C, Kocaman E, et al. Monitoring poisson′s ratio degradation of FRP composites under fatigue loading using biaxially embedded FBG sensors[J]. Materials, 2016, 9(9): 99-105.
[15] 赵勇. 光纤光栅及其传感技术[M]. 北京: 国防工业出版社, 2007.
[16] 朱超杰, 魏鹏, 李成贵. 基于光纤光栅的结构应变模态测试及参数识别[J]. 半导体光电, 2019, 40(1): 123-128.