Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1573224 | Materials Science and Engineering: A | 2016 | 9 Pages |
Abstract
A high temperature digital image correlation (DIC) technique was developed, which was applied to study the in-situ fracture behavior of a carbon fibre reinforced silicon carbide matrix (C/SiC) composite. The displacement distribution and cracking information of the C/SiC single edge notched beam specimen can be monitored real-time, thanks to the improved DIC technique with special speckle patterns that can reach up to 1600 °C. The results showed that the brittle to ductile transition temperature of C/SiC composites is about 1300 °C. The new failure mechanisms of C/SiC composites at different experimental temperatures were further verified with the aid of X-ray diffraction and scanning electron microscope (SEM) techniques. In addition, the relationships between the fracture toughness, first-crack strength of C/SiC composites and environmental temperature were deduced. The proposed experimental method and testing results may shed some light on assessing the reliability and durability of C/SiC composites at high temperatures.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
W.G. Mao, J. Chen, M.S. Si, R.F. Zhang, Q.S. Ma, D.N. Fang, X. Chen,