摘要
为了研究孔径对三维角联锁机织铺层复合材料拉伸性能的影响,制备了三种不同孔径的三维角联锁机织铺层复合材料并测试了其拉伸性能,并利用非接触全场应变测试系统和显微图像分析技术对复合材料进行了表征。结果表明,在拉伸过程中应变集中区域从孔的周边过渡到左右两侧,应变累计变化速率随着孔径的增大而增大。相比于开孔前样品,6、10、14 mm三种孔径样品的拉伸强度分别下降了23.13%、44.47%、50.08%,开孔试件的模量分别下降了16.92%、14.93%、22.25%。拉伸破坏包含纱线断裂、纤维拔出、界面脱粘等形式,其中较大孔径(14 mm)条件下,断口处分层破坏现象不显著。
In order to study the influence of pore size on the tensile properties of three-dimensional angle interlock woven laminated composites,three kinds of three-dimensional angle interlock woven laminated composites with different pore sizes were prepared and their tensile properties were tested,and the composite material was characterized using a non-contact full field strain testing system and microscopic image analysis technology.The results show that the strain concentration area transited from the periphery of the hole to the left and right sides,and the cumulative strain change rate increases with the increase of the hole diameter.Compared with the samples before the opening,the tensile strength of the samples with 6,10,and 14 mm pore sizes decreased by 23.13%,44.47%,and 50.08%,respectively,and the modulus of the opened specimens decreased by 16.92%,14.93%,and 22.25%,respectively.Tensile failure includes yarn breakage,fiber pull-out,and interfacial debonding.However,under larger pore sizes(14 mm),the phenomenon of delamination at the fracture surface was not significant.
作者
吴宁
孟影
朱超
侯琦琳
WU Ning;MENG Ying;ZHU Chao;HOU Qilin(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Ministry of Education Key Laboratory of Advanced Textile Composite Materials,Institute of Composite Materials,Tiangong University,Tianjin 300387,China)
出处
《聊城大学学报（自然科学版）》
2024年第1期46-51,61,共7页
Journal of Liaocheng University:Natural Science Edition
基金
国家自然科学基金项目(11802203)
天津市教委科研计划重点项目(2019ZD03)
天津市高等学校创新团队培养计划(TD13-5043)资助。
关键词
三维角联锁机织铺层复合材料
孔径
开孔拉伸性能
失效模式
3D angle interlocking woven layer composite material
aperture
tensile properties of opening
failure mode
