爆炸与冲击2017，Vol.37Issue(2)：315-322,8.DOI:10.11883/1001-1455(2017)02-0315-08
短切碳纤维C/SiC陶瓷基复合材料的动态劈裂拉伸实验
Dynamic splitting tensile test of short carbon fiber C/SiC ceramic matrix composites
摘要
Abstract
In order to investigate the dynamic fracture mechanics behavior and damage morphology of C/SiC ceramic matrix composites,dynamic splitting tensile tests on the C/SiC composites with three different volume fractions of short carbon fiber (16.0％,21.0％,24.8％) were carried out by the split Hopkinson pressure bar,the destructive interface part of C/SiC composites was scanned by using scanning electron microscopy and the failure characteristics and toughening mechanism of C/SiC composites were analyzed.The experimental results show that the dynamic tensile strengths of the C/SiC composite specimens with the same short carbon fiber volume fraction increase with the increasing of the impact pressure in the dynamic splitting tensile failure process,the failure of the specimens is significantly correlated with impact pressure and short carbon fiber volume fraction.When the short carbon fiber volume fraction is 16.0％,the tensile strength of the C/SiC composite specimens is the lowest.After the impact,the overall destruction of the C/SiC composite specimens is related to impact pressure and short carbon fiber volume fraction.关键词
短切碳纤维/体积分数/陶瓷基复合材料/动态劈裂拉伸测试/分离式霍普金森压杆Key words
short cut carbon fiber/volume fraction/ceramic matrix composites/dynamic splitting tensile test/split Hopkinson pressure bar分类
数理科学引用本文复制引用
徐颖,邵彬彬,许维伟,杨建明..短切碳纤维C/SiC陶瓷基复合材料的动态劈裂拉伸实验[J].爆炸与冲击,2017,37(2):315-322,8.基金项目
国家自然科学基金项目(51374012) （51374012）
高等学校博士学科点专项科研基金项目(20123415110001) （20123415110001）
