期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 48, 期 -, 页码 192-200出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2013.01.018
关键词
Carbon fibre; Delamination; Fatigue; Analytical modelling
资金
- Rolls-Royce plc via the Composites Bristol University Technology Centre
- EPSRC [EP/H040188/1]
- EPSRC [EP/H040188/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H040188/1] Funding Source: researchfish
A new semi-empirical equation that describes the fatigue delamination growth in fibre reinforced toughened epoxies is presented and validated against data available in the literature. The new law accounts for the simultaneous effects of the stress-ratio and mode-mixity on the interlaminar crack propagation. If delamination propagation thresholds are ignored, the proposed semi-empirical equation allows describing interlaminar crack propagation employing only three material dependent parameters, whereas alternative models presented in the literature require four. If reliable threshold data are available from experimental tests, the new semi-empirical law can be extended to a unified description of stress-ratio, mode-mixity and thresholds effects using six material dependent parameters. (C) 2013 Elsevier Ltd. All rights reserved.
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