AN EXPERIMENTAL STUDY ON BOLTED CONNECTION STRENGTH OF MT700 CARBON FIBER COMPOSITES

Abstract

Abstract: The connection strength, load-shift behavior and failure mode of single-bolted joint specimens for MT700 and T700S carbon fiber composites were investigated via static tensile-strength experiments. The MT700/603 laminates exhibit simultaneously superior load-carrying ability and structural stability. Meanwhile, their connection failure strengths for M5 and M6 single-bolted joint have increased by 12% and 10% compared to T700S/603 laminates, respectively. Moreover, the adhesive-bolted joint pattern of MT700/603 laminates could effectively improve their integral connection strength and structural safety margin. After adhesive layer failure, the residual strength coefficients for M5 and M6 adhesive-bolted joint were also as high as 65% and 88%, respectively.

Key words: MT700 carbon fiber, composite, bolted connection, adhesive-bolted connection

CLC Number:

TB332

LI Gui-yang, LI Jian-fang, ZHANG Ya-ting, HUANG Zhi-bin. AN EXPERIMENTAL STUDY ON BOLTED CONNECTION STRENGTH OF MT700 CARBON FIBER COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2016, 0(10): 75-79.

References

[1] 中国航空研究院. 复合材料结构设计手册[M]. 北京: 航空工业出版社, 2001.
[2] Lawlor V P, Mccarthy M A, Stanley W F. An experiment study of bolt-hole clearance effects in double-lap multi-bolt composite joints[J]. Composite Structures, 2005, 71(2): 176-190.
[3] Hart-Smith L J. Adhesive-bonded double-lap joints, NASA/CR-112235[R]. Virginia: National Aeronautics and Space Administration, 1973: 3-56.
[4] Hart-Smith L J. Bonded-bolted composite joints[J]. Journal Aircraft, 1985, 22(11): 993-1000.
[5] 白瑞祥, 郭兆璞, 陈浩然, 等. 复合材料层合板、壳胶-铆混合连接件有限元分析[J]. 大连理工大学学报, 2000, 40(3): 280-284.
[6] Kelly G. Load transfer in hybrid (bonded/bolted) composite single-lap joints[J]. Composite Structures, 2005, 69(1): 35-43.
[7] Kelly G. Quasi-static strength and fatigue life of hybrid (bonded/bolted) composite single-lap joints[J]. Composite Structures, 2006, 72(1): 119-129.
[8] Hoang-Ngoc C T, Paroissien E. Simulation of single-lap bonded and hybrid (bolted/bonded) joints with flexible adhesive[J]. International Journal of Adhesion & Adhesives, 2010, 30(3): 117-129.
[9] 谢鸣九. 复合材料连接[M]. 上海: 上海交通大学出版社, 2011.
[10] 王晓侠, 方超, 张亮, 等. 复合材料层合板螺栓连接强度试验研究[J]. 中国舰船研究, 2011,6(3): 88-93.
[11] 张卓, 杨彩云, 李嘉禄. 螺栓连接对二维机织物增强复合材料拉伸性能影响的实验研究[J]. 玻璃钢/复合材料, 2003(2): 11-14.
[12] 王自柯, 咸贵军, 李惠. 国产碳纤维拉伸性能研究[J]. 工业建筑, 2013, 43(6): 1-4.
[13] 李国明, 刘钟铃, 易明, 等. 国产碳纤维表明性能研究[J]. 高科技纤维与应用, 2013, 38(2): 10-13.
[14] 王迎芬, 彭公秋, 谢富原, 等. 国产T700级碳纤维表面特性对BMI复合材料湿热性能的影响[J]. 航空制造技术, 2014(3): 90-97.
[15] 罗云烽, 杨喆, 肈研, 等. 上浆剂对国产T700级碳纤维复合材料界面性能的影响[J]. 材料科学与工艺, 2014, 22(4): 61-66.