To explore the damage evolution rule of impact-damaged CFRP laminates under cyclic alternating load, we studied the surface infrared radiation characteristics of damaged CFRP laminates during fatigue based on the thermodynamic coupling effect. Using the infrared thermal image method, we analyzed the heat map sequences and temperature data of the damaged CFRP laminated plate during fatigue with the pressure-pressure fatigue test simulating the alternating load. Results show that with the increase of fatigue times, the damage evolves along the vertical direction of the fatigue load, the color of the hot spot gradually deepens, the initial impact damage slowly evolves into an elliptical shape, and finally a "sharp point" appears at the end of the hot spot. The maximum surface temperature difference of the specimen as a whole shows the rule of "fast rise-slow rise-fast rise", finally leading to a jump. The "sharp point" on the hot spot and the maximum surface temperature difference jump can be regarded as the precursor of structural fatigue failure. When the CFRP laminates are damaged, the maximum surface temperature difference is mainly related to the types of the fiber and the matrix, while the laying-out mode of the specimens has no significant influence on the types of fiber matrix. The study reveals the damage evolution law of CFRP laminates under fatigue load after impact, laying a foundation for the residual fatigue life evaluation and damage tolerance design of aircraft composite structures.
YANG Zhengwei
,
ZHAO Zhibin
,
LI Yin
,
SONG Yuanjia
,
KOU Guangjie
,
LI Lei
,
CHENG Pengfei
. Infrared radiation characteristics of CFRP laminate surface under compressive fatigue load[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021
, 42(5)
: 524239
-524239
.
DOI: 10.7527/S1000-6893.2020.24239
[1] 崔文斌, 陈煊, 陈超, 等. CFRP超高周疲劳损伤演化过程[J]. 航空学报, 2020, 41(1):223212. CUI W B, CHEN X, CHEN C, et al. Damage evolution process of CFRP in very high cycle fatigue[J]. Acta Aeronautica et Astronautica Sinica, 2020, 41(1):223212(in Chinese).
[2] 李真, 王俊, 邓凡臣, 等. 复合材料机身壁板的强度分析与试验验证[J]. 航空学报, 2020, 41(9):223688. LI Z, WANG J, DENG F C, et al. Strength analysis and test verification of composite fuselage panels[J]. Acta Aeronautica et Astronautica Sinica, 2020, 41(9):223688(in Chinese).
[3] SALVETTI M, GILIOLI A, SBARUFATTI C, et al. Analytical model of the dynamic behaviour of CFRP plates subjected to low-velocity impacts[J]. Composites Part B:Engineering, 2018, 142:47-55.
[4] TUO H L, LU Z X, MA X P, et al. Damage and failure mechanism of thin composite laminates under low-velocity impact and compression-after-impact loading conditions[J]. Composites Part B:Engineering, 2019, 163:642-654.
[5] LI L J, SUN L Y, WANG T K, et al. Repeated low-velocity impact response and damage mechanism of glass fiber aluminium laminates[J]. Aerospace Science and Technology, 2019, 84:995-1010.
[6] LI Y, ZHANG R M, LI L, et al. Temperature variation and damage characteristic of impacted CFRP laminate using infrared thermography:Experimental investigation[J]. International Journal of Fatigue, 2018, 112:130-137.
[7] MEOLA C, CARLOMAGNO G M. Infrared thermography of impact-driven thermal effects[J]. Applied Physics A, 2009, 96(3):759-762.
[8] RAVIKIRAN N K, VENKATARAMANAIAH A, BHAT M R, et al. Detection and evaluation of impact damage in CFRP laminates using ultrasound C-scan and IR thermography[C]//Proceedings of the National Seminar on Non-Destructive Evaluation. Hyderabad:[s.n.], 2006:1-5.
[9] TOUBAL L, KARAMA M, LORRAIN B. Damage evolution and infrared thermography in woven composite laminates under fatigue loading[J]. International Journal of Fatigue, 2006, 28(12):1867-1872.
[10] 李斌, 童小燕, 姚磊江, 等. 基于红外和声发射的复合材料疲劳损伤实时监测[J]. 机械科学与技术, 2011, 30(2):191-194. LI B, TONG X Y, YAO L J, et al. Real-time monitoring of composite fatigue damage based on infrared thermography and acoustic emission[J]. Mechanical Science and Technology for Aerospace Engineering, 2011, 30(2):191-194(in Chinese).
[11] KARAMA M. Determination of the fatigue limit of a carbon/epoxy composite using thermographic analysis[J]. Structural Control and Health Monitoring, 2011, 18(7):781-789.
[12] MONTESANO J, FAWAZ Z, BOUGHERARA H. Use of infrared thermography to investigate the fatigue behavior of a carbon fiber reinforced polymer composite[J]. Composite Structures, 2013, 97:76-83.
[13] PEYRAC C, JOLLIVET T, LERAY N, et al. Self-heating method for fatigue limit determination on thermoplastic composites[J]. Procedia Engineering, 2015, 133:129-135.
[14] LUONG M P. Introducing infrared thermography in soil dynamics[J]. Infrared Physics & Technology, 2007, 49(3):306-311.
[15] GARNIER C, LORRAIN B, PASTOR M L. Impact damage evolution under fatigue loading by infrared thermography on composite structures[J]. EPJ Web of Conferences, 2010, 6:42020.
[16] ŞAHIN Ö S, SELEK M. Detection of delaminations of laminar composites by infrared thermography[J]. Celal Bayar Vniversitesi Fen Bilimleri Dergisi, 2016, 12(2):91945.
[17] SWAMY J N, LAHUERTA F, ANISIMOV A G, et al. Evaluating delamination growth in composites under dynamic loading using infrared thermography[C]//Proceedings of the 17th European Conference on Composite Materials. Munich:KIT, 2016:1-9.
[18] HUANG J, PASTOR M L, GARNIER C, et al. A new model for fatigue life prediction based on infrared thermography and degradation process for CFRP composite laminates[J]. International Journal of Fatigue, 2019, 120:87-95.
[19] VASSILOPOULOS A P. The history of fiber-reinforced polymer composite laminate fatigue[J]. International Journal of Fatigue, 2020, 134:105512.
[20] MENEGHETTI G, RICOTTA M. The use of the specific heat loss to analyse the low- and high-cycle fatigue behaviour of plain and notched specimens made of a stainless steel[J]. Engineering Fracture Mechanics, 2012, 81:2-16.
[21] GIANCANE S, CHRYSOCHOOS A, DATTOMA V, et al. Deformation and dissipated energies for high cycle fatigue of 2024-T3 aluminium alloy[J]. Theoretical and Applied Fracture Mechanics, 2009, 52:117-121.
[22] GUO Q, GUO X L, FAN J L, et al. Research on high-cycle fatigue behavior of FV502B steel based on intrinsic dissipation[J]. Acta Metallurgica Sinica, 2015, 51(4):400-406.
[23] SUEMASU H, SASAKI W, ISHIKAWA T, et al. A numerical study on compressive behavior of composite plates with multiple circular delaminations considering delamination propagation[J]. Composites Science and Technology, 2008, 68(12):2562-2567.
[24] LI Y, SONG Y J. A novel thermgoraphic methodology to predict damage evolution of impacted CFRP laminates under compression-compression fatigue based on inverted Weibull model[J/OL]. IEEE Sensors Journal, (2020-05-25)[2020-06-16]. https://ieeexplore.ieee.org/abstract/docment/909-9544.doi:10.1109/JSEN.2020.2997458.
CJA