碰撞载荷下玻纤增强乙烯复合材料板损伤响应试验分析  

Experimental analysis of damage response of glass fiber reinforced vinyl resin composite laminate under collision load

作　　者：伍莉[1] 王祖华[1] 刘国仓 Wu Li;Wang Zuhua;Liu Guocang(Wuhan Second Ship Design and Research Institute,Wuhan 430205,China)

机构地区：[1]武汉第二船舶设计研究所

出　　处：《中国舰船研究》2019年第S01期115-120,134,共7页Chinese Journal of Ship Research

摘　　要：[目的]为研究船舶局部复合材料结构的抗碰撞性能,[方法]以更接近工程实际的大尺寸玻璃纤维增强乙烯树脂复合材料层合板为对象,采用钢质球形冲头模拟碰撞物,利用摆锤试验装置完成低速碰撞试验。针对不同能量冲击下的层合板试件,采用外表观测、超声C扫描技术以及剖面显微镜观察等方式对复合材料层合板的损伤响应进行对比分析,比较试件的碰撞冲击力和背面中心点位移等。[结果]试验结果表明,当碰撞能量较低时,复合材料层合板外观虽无明显损伤,但内部却发生了较大范围的基体开裂分层现象;随着碰撞能量逐步增加,层合板的损伤程度随之加深,除外表有明显裂纹损伤外,其内部有大范围的分层,同时伴随有纤维断裂的现象。[结论]所做研究可为玻璃纤维增强乙烯树脂复合材料结构抗碰撞性能评估提供参考。[Objectives]In order to study the impact resistance of ship local composite structures,[Methods]the low speed impact tests of large scale glass fiber reinforced vinyl resin composite laminate were carried out by using a pendulum test device,in which a spherical steel punch was adopted.For specimens under the impact of different energy,the damage responses were analyzed in detail by means of surface observation,ultrasonic C scanning and observation of cross-section by microscope.Meanwhile,the impact force and the back center displacement of the specimens were compared.[Results]The test results show that the composite laminates have no obvious damage on the surface when the collision energy is low,but the inner part of the composite laminates has a large scale of matrix cracking and delamination.And with the increase of collision energy,the degree of damage deepens.Besides the obvious surface damage,there is a wide range of internal delamination inside the composite laminate,accompanied by the phenomenon of fiber fracture.[Conclusions]The work of this paper can provide reference for assessment of collision resistance of the glass fiber reinforced vinyl resin composite structures.

关 键 词：摆锤试验 复合材料层合板 超声C扫描 损伤 

分 类 号：U668.3[交通运输工程—船舶及航道工程]