期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 146, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2021.106143
关键词
Fatigue; Composites; Hybrid; Interlayer; Delamination growth
资金
- S&P Clever Reinforcement
- COST Action [CA18120]
- COST (European Cooperation in Science and Technology) [SFRH/BSAB/150266/2019]
- Fundacao para a Ciencia e a Tecnologia, IP (FCT)
- European Social Fund
- national funds through the FCT/MCTES
- EPFL/Section of Civil engineering
- CERis/Instituto Superior Tecnico and ISISE/University of Minho
- FEDER funds through the Operational Program for Operational Program for Competitiveness and Internationalization (POCI)
- Portuguese National Innovation Agency (ANI) [3480, POCI-01-0247-FEDER-003480]
- Fundação para a Ciência e a Tecnologia [SFRH/BSAB/150266/2019] Funding Source: FCT
This study investigates the behavior of hybrid glass/ultra-high modulus carbon and low modulus/high modulus carbon fiber composites, revealing that the low modulus/high modulus carbon fiber composites have higher initial elastic modulus and strength, while the glass/ultra-high modulus carbon fiber composites exhibit the highest pseudo-ductile strain.
This work investigates the quasi-static, low-cycle and fatigue behavior of hybrid glass/ultra-high modulus carbon (GC) and low modulus/ /high modulus carbon (CC) fiber composites. These pseudo-ductile unidirectional interlayer hybrids are a new type of composites whose potential is not yet fully understood, particularly under cyclic/fatigue loading. Different test methods (digital image correlation, video extensometer and thermal camera) were used to record the evolution of the strain, damage and temperature during loading. The results of quasi-static loading shown pseudo-ductile responses with multiple fractures for all the series. The CC specimens exhibited higher initial elastic modulus, 'yield' stress and strength, while the GC specimens showed the highest pseudo-ductile strain. Much higher capacity of CC to resist to fatigue loading was observed. In the GC specimens significant damage was accumulated during fatigue loading, when the damage evolution of multiple fractures in different layers developed to delamination between the glass and carbon layers.
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