添加表面毡对复合材料层间增韧的影响

复合材料科学与工程 ›› 2015, Vol. 0 ›› Issue (10): 48-52.

添加表面毡对复合材料层间增韧的影响

魏浩¹, 朱凌², 王继辉^1*

1.材料复合新技术国家重点实验室,武汉 430070;
2.武汉理工大学绿色船舶与海工装备技术研究中心,武汉 430063

收稿日期:2015-04-17 出版日期:2015-10-28 发布日期:2021-09-14
通讯作者: 王继辉(1962-),男,博士,教授,主要从事聚合物基复合材料力学研究,jhwang@whut.edu.cn。
作者简介:魏浩(1989-),男,硕士,主要从事聚合物基复合材料研究。

EFFECTS OF ADDING GLASS-FIBER SURFACE MAT TO THE IMPROVEMENT OF FRP INTER-LAMINAR TOUGHNESS

WEI Hao¹, ZHU Ling², WANG Ji-hui^1*

1. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;
2. Green Ship and Marine Engineering Equipment Technology Research Centre, Wuhan University of Technology, Wuhan 430063, China

Received:2015-04-17 Online:2015-10-28 Published:2021-09-14

摘要/Abstract

摘要： 复合材料结构容易受到外来物体冲击,所以提高复合材料的抗冲击能力至关重要。研究了添加表面毡对复合材料层间增韧的影响。通过使用S-4800场发射扫描电镜(FESEM)、光学显微镜以及压剪、三点弯曲以及拉伸试验方式对含有表面毡(WFM)与不含表面毡试样(WF)进行对比测试。通过观察断裂形貌,发现添加表面毡试样断裂发生在表面毡层,短切纤维连接着相邻两层方格布,起着桥联作用。短纤维的桥联作用改变了剪切破坏机理,增大了能量消耗。测试结果表明,添加表面毡后,单位面积剪切破坏吸能能力提高7.3%。添加表面毡能够降低方格布的曲率,增大相邻方格布的相对滑移能力,进而在弯曲、拉伸过程中产生较小的破坏以及较大的变形。

关键词: 表面毡, 层间增韧, 能量吸收

Abstract: Improving the impact toughness and energy absorption abilities of the composite is very important. In this paper, the improvement of inter-laminar toughness through adding glass-fiber surface mat was investigated. S-4800 field emission scanning electron microscope (FESEM), optical microscopy, compression-shearing, 3-piont bending as well as tensile tests were carried out on the specimens of fiber-glass/resin laminates with and without fiber-glass surface mat, respectively. Fracture morphology showed that specimens with surface mat fractured in the surface mat laminar and short fibers worked as bridges which connect the adjacent layers and the fracture surface were relatively rough. The fiber bridging affected the failure mechanism and increased energy absorption ability. It was observed that the energy absorption of specimens with the surface mat increased by 7.3%. Mechanical tests indicated that the force-displacement slope of specimens with the surface mat became more smoothly and the fracture displacement was bigger as compared to the specimens without the surface mat. The results revealed that adding the surface mat reduced the shear stress and the shear modulus by 15.7% and 24.5%, respectively. Besides, adding the surface mat may decrease the curvature of fiber yarns, which will increase the resistance to fail.

Key words: surface mat, inter-laminar toughness, energy absorption

中图分类号:

TB332

魏浩, 朱凌, 王继辉. 添加表面毡对复合材料层间增韧的影响[J]. 复合材料科学与工程, 2015, 0(10): 48-52.

WEI Hao, ZHU Ling, WANG Ji-hui. EFFECTS OF ADDING GLASS-FIBER SURFACE MAT TO THE IMPROVEMENT OF FRP INTER-LAMINAR TOUGHNESS[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(10): 48-52.

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