Fatigue crack growth in CFRP-strengthened steel plates
| Autor: | Giulia Fava, Pierluigi Colombi, Lisa Sonzogni |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Tension (physics) business.industry Mechanical Engineering Structural engineering Paris' law Crack growth resistance curve Industrial and Manufacturing Engineering Finite element method Crack closure Mechanics of Materials mental disorders Ceramics and Composites Composite material business Compact tension specimen Stress intensity factor Stress concentration |
| Zdroj: | Composites Part B: Engineering. 72:87-96 |
| ISSN: | 1359-8368 |
| DOI: | 10.1016/j.compositesb.2014.11.036 |
| Popis: | In this paper fatigue crack growth in steel plates reinforced by using carbon fiber reinforced (CFRP) strips is investigated from the experimental, numerical and analytical point of view. Single edge notched tension (SENT) specimens were strengthened with different reinforcement configurations and tested at a stress ratio R of 0.4. Different initial damage levels were considered and the experimental results showed that the reinforcement application can effectively reduce the crack growth rate and significantly extend the fatigue life. Numerical models (finite elements) were also developed to evaluate the stress intensity factor (SIF) and the crack opening displacement (COD) profile. Based on the numerical results, an analytical model was proposed to predict the fatigue crack growth rate and the fatigue crack growth curves. The analytical results are validated by comparing the fatigue crack growth curves to the experimental ones. |
| Databáze: | OpenAIRE |
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