航空材料学报2012，Vol.32Issue(4)：80-86,7.DOI:10.3969/j.issn.1005-5053.2012.4.015
2D-C/SiC复合材料开孔试件拉伸特性和失效分析
Tensile Properties and Failure Analysis of 2D-C/SiC Composite Laminates with Circular Holes
郭洪宝 1王波 1矫桂琼 1杨成鹏 1刘永胜2
作者信息
- 1. 西北工业大学力学与土木建筑学院,西安710129
- 2. 西北工业大学材料学院,西安710072
- 折叠
摘要
Abstract
Tensile properties and failure modes of the φ4mm and φ6mm open-hole specimens of a 2D-C/SiC composite under tensile loading were investigated. The influence of notch size on the open-hole specimen's tensile strength was analyzed by comparing with standard specimen's experimental results. Compared with the standard specimen, the tensile strength values of φ4mm and φ6mm open-hole specimens decrease by 1. 0% and 6. 6% separately. By sticking strain gauges at different locations of the open-hole specimen, the strain variation in the narrowest net section was obtained during the tensile test, and the strain concentration effect was also clearly expressed. Meanwhile, by finite element analysis (FEA) , the strain distribution in the open-hole specimen was simulated. The FEA results have good consistence with experimental data. By Acoustic Emission ( AE) measurement, the damage evolution of the notched specimen was derived. The AE parameters reflect the macroscopic damage process of the open-hole materials. Combined with fracture section observations, the failure behavior of the open-hole specimens was concisely discussed.关键词
2D-C/SiC复合材料/开孔试件/拉伸/损伤演化/失效Key words
2D-C/SiC composite/open-hole specimens/tension/damage evolution/failure分类
数理科学引用本文复制引用
郭洪宝,王波,矫桂琼,杨成鹏,刘永胜..2D-C/SiC复合材料开孔试件拉伸特性和失效分析[J].航空材料学报,2012,32(4):80-86,7.
