SIMULATION AND EXPERIMENT ON THE FAILURE MECHANISMOF ADHESIVE BONDING REPAIR IN COMPOSITE

Abstract

Abstract: In order to investigate the fatigue behavior of the adhesive bonding repair in composite, the model of adhesive bonding structure with different patch dimension has been constructed based on the three-dimensional progressive damage theory. The ultimate static strength and residual strength of the bonding structure are predicted using damage subroutine, and the comparative analysis of fatigue test and static tensile test were performed. Five circle patches of different dimension are selected for evaluating the repair performance. Meanwhile, the damage degradation mechanism of the patch repair structure under different stress levels with different cyclic loadings is studied by microcosmic measurement. The results reveal that the ultimate static strength of the adhesive bonding structure with the 3.5r patch is better than others. And the residual strength of the adhesive bonding structure with the 2.5r patch is maximal. Under low fatigue cyclic loading, the dominant damage is normally matrix cracking, while fiber breaking is the main damage pattern at the high fatigue cyclic loading for composite materials.

Key words: composite material, fatigue test, damage propagation, adhesive bonding repair, progressive damage

CLC Number:

TB332

YUAN Jun-jun, LI Cheng, TIE Ying, ZHAO Shu-han. SIMULATION AND EXPERIMENT ON THE FAILURE MECHANISMOF ADHESIVE BONDING REPAIR IN COMPOSITE[J]. Fiber Reinforced Plastics/Composites, 2018, 0(5): 19-24.

References

[1] 陈绍杰. 复合材料结构修理指南[M]. 北京: 航空工业出版社, 2001.
[2] 苗学周. 基于渐进损伤理论的复合材料贴片修朴结构参数分析[D]. 郑州: 郑州大学, 2015.
[3] Andrew J J, Arumugam V, Bull D J, et al. Residual strength and damage characterization of repaired glass/epoxy composite laminates using A.E. and D.I.C[J]. Composite Structure, 2016(152): 124-139.
[4] Wu Z S, Wang X, Iwashita K. Tensile fatigue behavior of FRP and hybrid FRP sheets[J]. Composite B English, 2010(41): 396-402.
[5] 李克楠. 基于渐进损伤理论的复合材料贴片修朴结构参数分析[D]. 郑州: 郑州大学, 2017.
[6] He L, Li C, Zhu H H. Influence of hole strengthening layer on the failure process of composite material plate with a hole in connection structures[J]. Journal of Mechanical Engineering, 2011, 47(12): 43-47.
[7] Caminero M A, Pavlopoulou S, Lopez M, et al. Analysis of adhesively bonded repairs in composites: damage detection and prognosis[J]. Composite Structures, 2013, 95(1): 500-517.
[8] Akhbari M, Shokrieh M M, Nosraty H. A. Study on buckling behavior of composite sheets reinforced by hybrid woven fabrics[J]. Transactions-Canadian Society for Mechanical Engineering, 2008, 32(1):81-90.
[9] Badawy A. Impact behavior of glass fibers reinforced composite laminates at different temperatures[J]. Ain Shams Engineering Journal, 2012, 3(2): 105-111.
[10] Alawi H, Saleh I E. Fatigue crack growth relation by bonding pat-ches[J]. Engineering Fracture Mechanics, 1992, 42(5): 861-868.
[11] Andrew J J, Arumugam V. Effect of patch hybridization on the tensile behavior of patch repaired glass/epoxy composite laminates using acoustic emission monitoring[J]. International Journal of Adhesion and Adhesive, 2016(74): 155-166.
[12] Zhao X, Wang X, Wu Z, et al. Fatigue behavior and failure mechanism of basalt FRP composites under long-term cyclic loads[J]. International Journal of Fatigue, 2016(88): 58-67.
[13] Shan Y, Liao K. Environmental fatigue behavior and life prediction of unidirectional glass-carbon/epoxy hybrid composites[J]. International Journal of Fatigue, 2002, 24(8): 847-859.
[14] Shao Y, Okubo K, Fujii T, et al. Effect of matrix properties on the fatigue damage initiation and its growth in plain woven carbon fabric vinyl ester composites[J]. Composite Science and Technology, 2014(104): 125-135.
[15] Yudhanto A, Watanabe N, Iwahori Y, et al. Effect of stitch density on tensile properties and damage mechanisms of stitched carbon/epoxy composites[J]. Composites Part A, 2014, 60(5): 52-65.
[16] Butkus D L M, Valentin R V, Johnson D W S. Evaluating environmental effects on bonded repair systems using fracture mechanics[M]. Elsevier Ltd, 2002: 127-136.
[17] Deng S, Ye L. Influence of fiber-matrix adhesion on mechanical properties of graphite/epoxy composites: I. Tensile, flexure, and fatigue properties[J]. Journal of Reinforced Plastics and Composites, 1999, 18: 40.
[18] Maier G. Damage development in carbon fibre-reinforced polyimides in fatigue loading as a function of stress ratio[J]. Composites, 1986, 17: 111-116.
[19] Tserpes K I, Papanikos P, Labeas G. Fatigue damage accumulation and residual strength assessment of CFRP laminates [J]. Composite Structure,2004,63(2): 219-230.
[20] 王跃全. 飞机复合材料结构修理设计渐进损伤分析[D]. 南京: 南京航空航天大学, 2010.