High-cycle fatigue characteristics of quasi-isotropic CFRP laminates over 108 cycles (Initiation and propagation of delamination considering interaction with transverse cracks)
| Autor: | Keita Fujiwara, Narumichi Sato, Yasuyuki Kusumoto, Hiroyuki Kawada, Atsushi Hosoi |
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| Rok vydání: | 2010 |
| Předmět: |
Strain energy release rate
Fiber pull-out Materials science Mechanical Engineering Delamination Fracture mechanics Composite laminates Edge (geometry) Industrial and Manufacturing Engineering Stress (mechanics) Transverse plane Mechanics of Materials Modeling and Simulation General Materials Science Composite material |
| Zdroj: | International Journal of Fatigue. 32:29-36 |
| ISSN: | 0142-1123 |
| DOI: | 10.1016/j.ijfatigue.2009.02.028 |
| Popis: | High-cycle fatigue features of over 10 8 cycles, particularly the initiation and propagation of edge delamination considering the effects of transverse cracks, were investigated using quasi-isotropic carbon-fiber-reinforced plastic (CFRP) laminates with a stacking sequence of [45/0/−45/90] s in this study. In the relationship between a transverse crack density and initiation and growth of edge delamination, it was found that fatigue damage growth behavior varied depending on applied stress. It was observed that edge delamination initiated and grew at parts where transverse cracks were dense at ordinary applied stress, whereas it was observed that edge delamination grew before or simultaneously with transverse crack propagation at a low applied stress and high-cycle loading. In addition, the critical transverse crack density where delamination begins growing was calculated to evaluate the interaction between transverse crack and edge delamination growth. |
| Databáze: | OpenAIRE |
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