工艺与制造英文2023被引 16
高纤维体积分数单向纤维增强拉挤复合材料的疲劳性能
Fatigue behavior of unidirectional fiber‐reinforced pultruded composites with high volume fiber fraction
Omar Alajarmeh, Allan Manalo, Wahid Ferdous, Ghassan Almasabha, Ahmad Tarawneh, K. Y. Eayal Awwad, Alexander Safonov, Xuesen Zeng, Peter Schubel · University of Southern Queensland
摘要整理
拉挤成型是纤维增强聚合物（FRP）复合材料的高效批量制造工艺，能够生产出高强度、高质量的产品。然而，关于这些产品疲劳性能的研究极为有限，特别是单向纤维排列的产品。本研究调查了高纤维体积分数单向拉挤玻纤增强复合材料（GFRP）的疲劳性能。采用不同应力水平、加载频率和夹持条件进行拉伸-拉伸疲劳加载直至失效。研究结果表明，高纤维体积分数的GFRP复合材料具有显著较低的疲劳寿命。此外，增加加载频率表现出更好的疲劳抗力，而标签几何形状对狗骨形试样的疲劳性能影响不显著。与现有文献的对比表明，高纤维体积分数的GFRP复合材料的疲劳性能低于低纤维体积分数的产品。本研究还提出了单向GFRP复合材料的疲劳容量折减系数，该系数与纤维体积分数相关。
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