Effect of Temperature and Water Absorption on Low-Velocity Impact Damage of Composites with Multi-Layer Structured Flax Fiber

Materials

Zehua Qu¹  Yichun Guo²  Junjie Zhong²  Hao Ma²  Shenming Cai²  Yiou Shen²  Yan Li² 

[1] Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai 200433, China;School of Aerospace Engineering and Applied Mechanics, Tongji University, 1239 Siping Road, Shanghai 200092, China;

关键词: plant fiber;    multi-layer;    low-velocity impact;    temperature;    water absorption;   

DOI  :  10.3390/ma12030453

来源: DOAJ

【 摘 要 】

Temperature and moisture can cause degradation to the impact properties of plant fiber-based composites owing to their complex chemical composition and multi-layer microstructure. This study focused on experimental characterization of the effect of important influencing factors, including manufacturing process temperature, exposure temperature, and water absorption, on the impact damage threshold and damage mechanisms of flax fiber reinforced composites. Firstly, serious reduction on the impact damage threshold and damage resistance was observed, this indicated excessive temperature can cause chemical decomposition and structural damage to flax fiber. It was also shown that a moderate high temperature resulted in lower impact damage threshold. Moreover, a small amount of water absorption could slightly improve the damage threshold load and the damage resistance. However, more water uptake caused severe degradation on the composite interface and structural damage of flax fiber, which reduced the impact performance of flax fiber reinforced composites.

【 授权许可】

Unknown