POLYMERS AND POLYMER MATRIX COMPOSITES |
|
|
|
|
|
Shearing and Bending Performance of Stitched Composite T-stiffened Panel |
YU Kun, WEN Liwei, HUAN Huasong
|
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
|
|
Abstract In order to prevent the debonding failure between stiffener and skin due to shearing and bending loads during service of T-stiffened composite panel, stitching technology was introduced to improve the interface performance between stiffener flange and skin. The self-developed sti-tching machine was used to stitch dry fibers, then stitched preform was cured and formed by vacuum assisted resin infusion (VARI) technology, and stitched T-stiffened panel samples were prepared after demoulding. The reinforcement mechanism of stitching and effects of thread fineness on properties of T-joints were researched through shear and bend tests. Results show that, under shearing stress, the ultimate failure load of stitched samples is significantly higher than that of unstitched samples. With the increase of thread fineness, ultimate failure load of T-joints increases. When thread fineness increases to 1 500 D, the ultimate failure load increases by 55.0%. Under bending stress, as thread fineness increases, ultimate failure load increases first and then decreases. Stitching has no obvious effect on the initial failure load of T-joints under two different stresses.
|
Published: 07 September 2021
|
|
Fund:Fundamental Research Program of Commission of Science Technology and Industry for National Defence (JCKY2019204A001),Foundation of Shanghai Aerospace Science and Technology Innovation (SAST2019-117). |
About author:: Kun Yuis a master's degree candidate, mainly engaged in the research of stitching technology of advanced composites. Liwei Wenis currently an associate professor of Nanjing University of Aeronautics and Astronautics. He obtained Ph. D. degree from Harbin Institute of Techno-logy in 2005 and is now engaged in the research of advanced composites automatic forming technology. He has published more than 50 journal papers,applied 10 national invention patents. |
|
|
1 Xiong J J, Shenoi R A. Chinese Journal of Aeronautics, 2019, 32(1), 114. 2 Ye J R, Zhang B M. Acta Materiae Compositae Sinica, 2009, 26(2), 187(in Chinese). 叶金蕊, 张博明. 复合材料学报, 2009, 26(2), 187. 3 Sun Z Q, Wu A R. Materials Reports, 2015, 29(11), 61(in Chinese). 孙振起, 吴安如. 材料导报, 2015, 29(11), 61. 4 Koh T M, Isa M D, Feih S, et al. Composites Part B-Engineering, 2013, 44(1), 620. 5 Duan Y S, Zhou X Q, Hou J S. Aeronautical Manufacturing Technology, 2012(18), 34(in Chinese). 段友社, 周晓芹, 侯军生. 航空制造技术, 2012(18), 34. 6 Yap J W H, Scott M L, Thomson R S, et al. Composite Structures, 2002, 57(1), 425. 7 Vijayaraju K, Mangalgiri P D, Dattaguru B. Composite Structures, 2004, 64(2), 227. 8 Bigaud J, Aboura Z, Martins A T, et al. Composite Structures, 2018, 184, 249. 9 Yin C P, Li J W, Liu J, et al. Materials Reports, 2007, 21(11), 136(in Chinese). 尹昌平, 李建伟, 刘钧, 等. 材料导报, 2007, 21(11), 136. 10 Iwahori Y, Nakane K, Watanabe N. Composites Science and Technology, 2009, 69(14), 2315. 11 Mignery L A, Tan T M, Sun C T. In: ASTM International. West Conshohocken, USA, 1985,pp. 371. 12 Cheng X Q, Zhao L, Zhang Y N. Journal of Beijing University of Aeronautics and Astronautics, 2003(11), 1001(in Chinese). 程小全, 赵龙, 张怡宁. 北京航空航天大学学报, 2003(11), 1001. 13 Yang L Y, Gong J Q, Huang D M. Composites Science and Engineering, 2020(1), 52(in Chinese). 杨龙英, 龚家谦, 黄当明. 复合材料科学与工程, 2020(1), 52. 14 Parlapalli M R, Soh K C, Shu D W, et al. Composites Part A-Applied Science and Manufacturing, 2007,38(9), 2024. 15 Sheng Y, Xiong K, Bian K, et al. Acta Materiae Compositae Sinica, 2013, 30(6), 185(in Chinese). 盛仪, 熊克, 卞侃, 等. 复合材料学报, 2013, 30(6), 185. 16 Huan H S, Wen L W, Xiao J, et al. Composites Science and Enginee-ring, 2020(3), 90(in Chinese). 宦华松, 文立伟, 肖军, 等. 复合材料科学与工程, 2020(3), 90. 17 Ghasemnejad H, Argentiero Y, Tez T A,et al. Materials and Design, 2013, 51, 552. 18 Khalili S M R, Ghaznavi A. Applied Composite Materials, 2013, 20(1), 41. 19 Richtsfeld M, Biegelbauer G, Wohlkinger W, et al. In: European Control Conference. Kos, Greece, 2007, pp. 2051. 20 Yao F L, Li L Y, Yue J F, et al. Journal of Mechanical Engineering, 2016, 52(13), 60(in Chinese). 姚福林, 李亮玉, 岳建锋, 等. 机械工程学报, 2016, 52(13), 60. 21 Pan J, Wen L W, Xiao J, et al. Fiber Reinforced Plastics/Composites, 2017(2), 76(in Chinese). 潘杰, 文立伟, 肖军, 等. 玻璃钢/复合材料, 2017(2), 76. |
|
|
|