摘要
针对连续碳纤维增强环氧树脂基复合材料层合板和玻璃纤维(GF)增强环氧树脂基复合材料层合板两类典型结构,开展了基于原位测量的冲击损伤定位研究。利用碳纤维/环氧树脂基复合材料层合板自身的导电性,设计了电极阵列,考察了板厚对定位结果的影响;对于不导电玻璃纤维/环氧树脂基复合材料层合板,设计并制备了多壁碳纳米管涂覆的玻璃纤维束(MWCNT@GF)传感器,并将MWCNT@GF嵌入层合板中形成传感网络,考察了不同入射角度对定位结果的影响。对于上述两种方法,编制了冲击损伤成像算法。结果表明:利用冲击前后碳纤维自身电阻和嵌入MWCNT@GF传感器的方法,可准确定位碳纤维/环氧树脂基复合材料层合板和玻璃纤维/环氧树脂基复合材料层合板的冲击损伤。
Damage localization was performed for the typical carbon fiber(CF)and glass fiber(GF)reinforced epoxy composite laminates through in-situ measurement technology.The electrode array was developed by utilizing the conductivity of CF reinforced epoxy composite laminates.The influence of plate thickness on the damage localization was investigated.For non-conductive GF reinforced epoxy composite laminates,multiwalled carbon nanotubes coated GF bundles sensors(MWCNT@GF)were fabricated,and the sensors were embedded into the laminates to form the sensor network.The influence of different incident angles on the localization was investigated.For the above two methods,an impact damage localization algorithm was developed and compiled.The results show that the damage position of CF/epoxy and GF/epoxy composite laminates can be located with high accuracy by using the self-resistance of CF and embedding MWCNT@GF sensors.
作者
张东
胡文龙
万云
杨斌
ZHANG Dong;HU Wenlong;WAN Yun;YANG Bin(School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,Jiangxi,China;School of Aerospace and Mechanics,Tongji University,Shanghai 200092,China)
出处
《高压物理学报》
CAS
CSCD
北大核心
2021年第5期46-55,共10页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金(12072238)
上海市科技创新行动计划高新技术领域项目(20511104200)。
