Compressive behavior of C/SiC composite sandwich structure with stitched lattice core

被引：54
|
作者：
Song, Ze-zhi [1 ]
Cheng, Su [1 ]
Zeng, Tao [1 ]
Yang, Fan [1 ]
Jing, Shao-dong [1 ]
Fang, Dai-ning [2 ]
机构：
[1] Harbin Univ Sci & Technol, Dept Engn Mech, Harbin 150080, Peoples R China
[2] Peking Univ, Dept Mech & Aerosp Technol, Beijing 100871, Peoples R China
来源：
COMPOSITES PART B-ENGINEERING | 2015年 / 69卷
基金：
中国国家自然科学基金;
关键词：
Ceramic matrix composites (CMCs); Mechanical properties; Mechanical testing; Stitching; FIBER; CMCS;
D O I：
10.1016/j.compositesb.2014.10.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
C/SiC composite sandwich structure with stitched lattice core was fabricated by a technique that involved polymer impregnation and interweaving. The mechanical behaviors of C/SiC composite sandwich structure were investigated at room temperature. The out-of-plane compressive strength was 20.97 MPa while modulus was 1473.55 MPa. The microstructural evolution on compression fracture surfaces of the stitching yarns was investigated by scanning electron microscopy, and the damage pattern of fibers on compression fracture surface was presented and discussed. Under an in-plane compression loading, the C/SiC composite sandwich structure displayed a linear-elastic behavior until failure. The peak strength and average modulus are 165.61 MPa and 19.74 GPa, respectively. The failure of the specimen was dominated by the fracture of the facesheet. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：243 / 248
页数：6
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