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2222材料工程  2017, Vol. 45 Issue (10): 124-131    DOI: 10.11868/j.issn.1001-4381.2015.000802
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
复合材料胶接修理层合板拉伸性能及影响参数
聂恒昌1, 徐吉峰2, 关志东1,*(), 黎增山1, 王鑫1
1 北京航空航天大学 航空科学与工程学院, 北京 100191
2 中国商用飞机有限责任公司 北京民用飞机技术研究中心, 北京 102211
Tensile Property and Influence Parameters of Bonded Repaired Composite Laminates
Heng-chang NIE1, Ji-feng XU2, Zhi-dong GUAN1,*(), Zeng-shan LI1, Xin WANG1
1 School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
2 Beijing Aeronautical Science & Technology Research Institute, Commercial Aircraft Corporation of China, Ltd., Beijing 102211, China
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摘要 

胶接修理是效率较高、应用较广的复合材料结构修补技术。对采用不同参数进行挖补和贴补修理的复合材料层合板的拉伸性能进行实验研究。结果表明：挖补修理实验件的强度恢复率约为66%~91%，贴补修理实验件的强度恢复率约为44%~61%。在挖补修理实验件中，减小挖补斜度、采用双面挖补、使用热压罐固化，在贴补修理实验件中，采用双面贴补、增大补片尺寸，均可得到更高的强度恢复率。在实验基础上建立的有限元模型，能够有效预测实验件的失效载荷、破坏模式，并可分析实验件的应力分布和渐进损伤过程，为设计修理方案提供参考。
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聂恒昌
徐吉峰
关志东
黎增山
王鑫
关键词 ： 层合板,  挖补修理,  贴补修理,  强度恢复率,  有限元模拟,  渐进损伤    
Abstract：

Bonded repair is efficient and widely-used repair technique for composite structures. Tests were conducted to study the tensile property of scarf repaired and external bonded repaired composite laminates with different repair parameters. The results show that the recovery of failure strength of scarf repaired laminates is about 66%-91% while external bonded repaired laminates is about 44%-61%.When reducing scarf ratio, repairing in double sides, curing in autoclaves, the scarf repair specimens can reach a higher recovery rate of failure strength. When repairing in double sides, enlarging the size of patches, the external bonded repaired specimens can also reach a higher recovery rate of failure strength. Based on the test results, finite element models were established to predict the failure loads and failure modes of specimens, and to analyse the stress distribution and progressive damage process of specimens, which can provide a reference to the designing in the repair projects.
Key words： laminate    scarf repair    external bonded repair    recovery rate of strength    finite element modelling    progressive damage
收稿日期: 2015-06-26      出版日期: 2017-10-18
中图分类号:  TB33  
通讯作者: 关志东     E-mail: zdguan@buaa.edu.cn
作者简介: 关志东(1964-), 男, 教授, 博士, 研究方向:飞机复合材料结构设计, 联系地址:北京市海淀区学院路37号北京航空航天大学新主楼D506(100191), E-mail:zdguan@buaa.edu.cn
引用本文:   
聂恒昌, 徐吉峰, 关志东, 黎增山, 王鑫. 复合材料胶接修理层合板拉伸性能及影响参数[J]. 材料工程, 2017, 45(10): 124-131.
Heng-chang NIE, Ji-feng XU, Zhi-dong GUAN, Zeng-shan LI, Xin WANG. Tensile Property and Influence Parameters of Bonded Repaired Composite Laminates. Journal of Materials Engineering, 2017, 45(10): 124-131.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.000802      或      http://jme.biam.ac.cn/CN/Y2017/V45/I10/124
Fig.1  实验件基本尺寸(a)挖补修理；(b)贴补修理
E11/GPa E22/GPa E33/GPa G12/GPa G23/GPa G13/GPa ν12 ν23 ν13 XT/MPa XC/MPa YT/MPa YC/MPa S/MPa
156.50 8.25 8.25 4.37 2.81 4.37 0.32 0.47 0.32 2986.30 1508.00 50.00 220.00 60.30
Table 1  T800力学性能
E/GPa G/GPa ν tn0=ts0=tt0/
MPa		 GnC=GsC=GtC/
(N·mm-1)
1 0.385 0.3 24.5 7.5
Table 2  J116B胶黏剂力学性能
Group Damaged ply Damaged diameter/mm
WX-1 0 25
WX-2 4 25
WX-3 8 25
Table 3  未修理层合板实验矩阵
Group Damaged ply Repair method Scarf ratio Curing technique
WP-1 4 Single-side repair 1:20 Autoclave
WP-2 4 Single-side repair 1:30 Autoclave
WP-3 4 Single-side repair 1:40 Autoclave
WP-4 8 Single-side repair 1:30 Autoclave
WP-5 8 Double-side repair 1:30 Autoclave
WP-6 4 Single-side repair 1:30 Hot bonder
Table 4  挖补修理层合板实验矩阵
Group Damaged ply Repair method Patch ply Patch
diameter/mm
TP-1 8 Single-side repair 6 75
TP-2 8 Single-side repair 6 100
TP-3 8 Double-side repair 6 75
TP-4 8 Double-side repair 6 100
Table 5  贴补修理层合板实验矩阵
Fig.2  未修理实验件的破坏模式(a)损伤4层；(b)损伤8层
Fig.3  挖补修理实验件的破坏模式
(a)正面；(b)反面
Fig.4  贴补修理实验件的破坏模式(a)正面；(b)侧面
Group Failure load/kN Recovery rate of strength/%
WX-1 225.17 100.00
WX-2 128.91 57.25
WX-3 101.17 44.93
WP-1 164.42 73.02
WP-2 181.82 80.75
WP-3 203.79 90.50
WP-4 149.74 66.50
WP-5 162.86 72.33
WP-6 149.90 66.57
TP-1 100.01 44.42
TP-2 117.93 52.37
TP-3 116.89 51.91
TP-4 136.53 60.63
Table 6  各组实验件平均破坏载荷及强度恢复率
Fig.5  胶接修理层合板有限元模型
(a)挖补修理层合板；(b)贴补修理层合板
Group Test/kN FEA/kN Error/%
WP-1 164.42 169.67 +3.19
WP-2 181.82 175.92 -3.24
WP-3 203.79 181.8 -10.79
WP-4 149.74 152.51 +1.85
WP-5 162.86 162.51 -0.21
TP-1 100.01 109.71 +9.70
TP-2 117.93 119.53 +1.36
TP-3 116.89 131.45 +12.46
TP-4 136.53 150.41 +10.17
Table 7  有限元计算与实验结果的破坏载荷对比
Fig.6  单面挖补修理模型的应力云图
(a)母板；(b)母板0°铺层；(c)补片；(d)补片外覆盖层；(e)胶层
Fig.7  单面贴补修理模型的应力云图(a)母板；(b)母板0°铺层；(c)补片；(d)胶层
Fig.8  单面挖补修理模型沿胶层中面的应力分布
Fig.9  单面贴补修理模型沿胶层中面的应力分布
Fig.10  单面挖补修理模型的损伤扩展(a)损伤起始；(b)80%峰值载荷；(c)峰值载荷；(d)完全失效
Fig.11  单面贴补修理模型的损伤扩展
(a)损伤起始；(b)80%峰值载荷；(c)峰值载荷；(d)完全失效
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