| Related citation: | WEI Li-ming,ZHANG Yue,XU Cheng-hai,MENG Song-he,TIAN Xiao-xiao.Compressive testing and failure analysis of three-dimensionally reinforced carbon/carbon composites[J].Journal of Harbin Institute Of Technology(New Series),2012,19(1):17-22.DOI:10.11916/j.issn.1005-9113.2012.01.004. |
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| Author Name | Affiliation | | WEI Li-ming | Center for Composite Materials,Harbin Institute of Technology,Harbin 15008,China
Institute of Structure Mechanics, CAEP,Mianyang 621900,China | | ZHANG Yue | School of Foreign Languages,Harbin Institute of Technology,Harbin 150001,China | | XU Cheng-hai | Center for Composite Materials,Harbin Institute of Technology,Harbin 15008,China | | MENG Song-he | Center for Composite Materials,Harbin Institute of Technology,Harbin 15008,China | | TIAN Xiao-xiao | Center for Composite Materials,Harbin Institute of Technology,Harbin 15008,China |
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| Abstract: |
| It is important to reveal the performance of carbon/carbon composites subjected to complex loading, which can provide a basis for developing the failure laws of carbon/carbon composites. The uniaxial and biaxial compressive performances of three-dimensional reinforced carbon/carbon composites (3D C/C) were investigated in this paper. The results showed that the compressive strength becomes larger when the loading direction parallels to the z-direction of 3D C/C. The uniaxial compression failure was mainly caused by fracture fiber bundles to form an overall shear fault in the z-direction. The failure mode was delamination of fiber bundle/matrix interface for the x- and y-direction samples. The biaxial compressive failure of x-y direction compressioncompression specimen was caused by the low interlaminar shear strength. In addition,for y-z and z-x direction compression-compression samples,the shear-type failure was formed on the surface of the specimen plumbing the loading direction. Overall,the weak-interface is still a main factor to influent the fracture mechanism of 3D C/C. |
| Key words: C/C composites microstructure biaxial testing failure mode |
| DOI：10.11916/j.issn.1005-9113.2012.01.004 |
| Clc Number:TB332 |
| Fund: |
