| 二维C/SiC复合材料在冲击拉伸下的损伤过程 |
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| 引用本文： | 陈煊,陈超,程礼,陈卫. 二维C/SiC复合材料在冲击拉伸下的损伤过程[J]. 复合材料学报, 2017, 34(2): 400-405. DOI: 10.13801/j.cnki.fhclxb.20160606.002 |
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| 作者姓名： | 陈煊 陈超 程礼 陈卫 |
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| 作者单位： | 1. 空军工程大学 航空航天工程学院, 西安 710038;2. 先进航空发动机协同创新中心, 北京 100191 |
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| 基金项目： | 国家自然科学基金青年项目，陕西省自然科学基金，中国博士后科学基金 |
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| 摘 要： | 利用分离式霍普金森拉杆实验装置(SHTB)和超高速照相机,对二维C/SiC复合材料进行了冲击拉伸力学性能实验研究,同时结合其宏观力学行为,分析了在冲击拉伸载荷作用下的损伤破坏过程。结果表明:材料的应力-应变曲线呈明显的非线性特征,其内部损伤破坏和裂纹扩展过程分为四个阶段:损伤积累于第一阶段,裂纹起源于第二阶段,屈服失效于第三个阶段,快速扩展于第四个阶段。
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| 关 键 词： | C/SiC复合材料 冲击拉伸 霍普金森拉杆 损伤过程 超高速相机 |
| 收稿时间： | 2016-02-22 |
Fracture damage of two dimensional C/SiC composites under dynamic loading |
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| Chen Xuan,Chen Chao,Cheng Li,Chen Wei. Fracture damage of two dimensional C/SiC composites under dynamic loading[J]. Acta Materiae Compositae Sinica, 2017, 34(2): 400-405. DOI: 10.13801/j.cnki.fhclxb.20160606.002 |
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| Authors: | Chen Xuan Chen Chao Cheng Li Chen Wei |
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| Affiliation: | 1. College of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi'an 710038, China;2. Co-Innovation Center for Advanced Aero-Engine, Beijing 100191, China |
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| Abstract: | The dynamic tensile properties of 2D C/SiC composites were investigated by means of Split Hopkinson Tensile Bar (SHTB)and ultra high-speed camera.Based on its macro mechanic behavior,the failure process of the specimen under dynamic tensile loading was analyzed.The experimental results indicate that the stress-strain curve is obviously non-linear,and examination of the failure process of the specimen helps define the four phases of crack propagation,namely,the damage accumulation phase,crack initiation phase,yield failure phase and crack fast spreading phase. |
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| Keywords: | C/SiC composite impact tensile loading SHTB failure process ultra high-speed camera |
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