摘要
通过二维C/SiC-ZrC复合材料的低速冲击、冲击后拉伸试验以及CT扫描方法,研究了不同冲击能量对材料冲击损伤特征及拉伸性能的影响。结果表明C/SiC-ZrC复合材料具有较高的冲击损伤容限,在15~24 J能量范围内的损伤状态主要表现为穿透损伤。随着冲击能量的增大,材料名义拉伸强度的下降趋于平缓,最大降幅约为25%。冲击主要造成冲击区域附近的复合材料发生分层和纤维断裂损伤,冲击区域以外未发生明显的损伤和破坏。
The effects of impact energy on damage characteristics and tensile properties of 2D C/SiC-ZrC composites were studied by low-speed impact,post-impact tensile tests and the CT scanning methods.The results indicated that C/SiC-ZrC composites had a high impact damage tolerance.The damage state of the composites in the energy range of 15–24 J was mainly shown as penetrating damage.When the impact energy increased within the range of 15-24 J,the nominal tensile strength of C/SiC-ZrC composites reduced slowly,with a maximum decrease of around 25%.The impact mainly caused lamination and fiber fracture damage near the impact areas.However,the impact damage was not observed out of the impact areas.
作者
皮慧龙
张宝鹏
于新民
刘伟
金鑫
PI Huilong;ZHANG Baopeng;YU Xinmin;LIU Wei;JIN Xin(Science and Technology on Thermostructure Composite Materials Laboratory,Northwestern Polytechnical University,Xi’an 710072,China;Aerospace Institute of Advanced Materials&Processing Technology,Beijing 100074,China)
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2020年第12期1327-1332,共6页
Journal of Inorganic Materials
