Mechanical behavior and failure mechanism of 2.5D (shallow bend-joint, deep straight-joint) and 3D orthogonal UHWMPE fiber/epoxy composites by vacuum-assistant-resin-infused
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Abstract
Ultra-high molecular weight polyethylene (UHMWPE) fiber/epoxy composites were fabricated by a vacuum assisted resin infused (VARI) processing technology. The curing condition of composites was at a cure temperature of 80 °C for 3h in a drying oven. The characteristics of 2.5D (shallow bend-joint and deep straight-joint) structure and 3D orthogonal structure were compared. The failure behavior, flexural strength, and microstructures of both composites were investigated. It was found that the flexural property was closely related to undulation angle θ. The flexural strength of 3D orthogonal structure composite was superior to the other two structures composites with the same weave parameters and resin.
Key words
2.5D shallow bend-joint 2.5D deep straight-joint 3D orthogonal flexural propertyPreview
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Notes
Acknowledgements
The authors acknowledge Hangzhou Xiangsheng High Strength Fiber Material INC. for providing the materials and fund used in this work, other was funded by the National Natural Science Foundation of China (No. 51001117)
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