Modeling of Fatigue in Cross-Ply Ceramic Matrix Composites
| Autor: | Shankar Mall, J. P. Solti, D. D. Robertson |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Fiber pull-out
Materials science Mechanical Engineering Micromechanics Fracture mechanics 02 engineering and technology 021001 nanoscience & nanotechnology Ceramic matrix composite Matrix (mathematics) Hysteresis 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Materials Chemistry Ceramics and Composites Fracture (geology) Fiber Composite material 0210 nano-technology |
| Zdroj: | Journal of Composite Materials. 31:1921-1943 |
| ISSN: | 1530-793X 0021-9983 |
| DOI: | 10.1177/002199839703101903 |
| Popis: | This study proposes a methodology for modeling the fatigue response of cross-ply ceramic matrix composites (CMCs). The micromechanics based analysis and failure criteria are formulated to model stress-strain hysteresis, strain ratchetting and S-N behavior specific to room-temperature cyclic loading environments. The damage mechanisms considered are matrix cracking in the 90° and 0° plies, fiber/matrix interfacial debonding, fiber fracture, and fiber pull-out. These damage modes are modeled by a set of failure criteria with a minimum reliance on empirical data which can be easily employed in a variety of numerical and analytical techniques. The predicted results are found to be in good agreement with the experimental data; however, it is observed that the assumed degradation in the frictional resistance along the fiber/matrix interface plays a dominant role in determining the fatigue response. |
| Databáze: | OpenAIRE |
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