Mechanistic model for fiber crack density prediction in cyclically loaded carbon fiber-reinforced polymer during the damage initiation phase
| Autor: | Asim Tewari, K. Senthilnathan, N.K. Naik, Anirban Guha, Chandrashekhar P. Hiremath |
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| Rok vydání: | 2018 |
| Předmět: |
Carbon fiber reinforced polymer
Materials science Mechanical Engineering 02 engineering and technology 021001 nanoscience & nanotechnology 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Phase (matter) Ultimate tensile strength Materials Chemistry Ceramics and Composites Polymer composites Fiber Composite material 0210 nano-technology |
| Zdroj: | Journal of Composite Materials. 53:993-1004 |
| ISSN: | 1530-793X 0021-9983 |
| Popis: | Prediction of the fiber crack density (as one of the microstructural damages) for unidirectional fiber-reinforced polymer composite under monotonic tensile load, using strength models, has been reported in the literature. However, the microstructural damage prediction for a fiber-reinforced polymer subjected to fatigue loading is still a challenge. In this work, a progressive damage initiation model was developed to predict the fiber crack density in carbon fiber-reinforced polymer composite subjected to fatigue loading. A stochastic model was used for modeling the fiber fatigue strength. Reduction in effective life of the fiber was modeled using linear Miner’s rule. Effect of fatigue strength parameters on fiber crack density was found to be considerable compared to the effect of interface shear strength. At a low number of cycles, fiber crack density obtained from the model was in good agreement with the experimentally measured fiber crack density. |
| Databáze: | OpenAIRE |
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