研究混合复合材料关节与薄增强附着部位的研究
Farin Ramezani1, Ricardo J C Carbas1,2, Eduardo A S Marques2
1Instituto de Ciência e Inovação Em Engenharia Mecânica e Engenharia Industrial (INEGI), Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
Materials (Basel, Switzerland)
|June 10, 2023
概括
使用薄层层的混合复合层材可显著提高结合关节的抗拉强度. 这项研究表明,与传统复合材料相比,分层减少和性能提高.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 复合材料 复合材料 复合材料
背景情况:
- 分层是单向复合板材的关键故障模式.
- 混合层,结合薄层层,提供一个潜在的解决方案,以提高横向抗拉强度.
- 薄层技术可以提高复合结构的机械性能.
研究的目的:
- 为了研究混合复合板材的性能,使用薄层作为粘附在粘合单 lap 接头中的粘附物.
- 为了比较混合连接的抗拉强度和故障机制与传统的复合材料连接.
- 分析薄层集成对分层和损坏启动地点的影响.
主要方法:
- 使用准静态负荷对单个膝关节的实验测试.
- 高速摄像头分析,以确定损坏的发起点和分层.
- 开发数值模型,以了解传统,薄层和混合型接头的故障机制.
- 使用的Texipreg HS 160 T700 (传统) 和NTPT-TP415 (薄层) 复合材料.
主要成果:
- 与传统接头相比,混合接头的抗拉强度显著增加.
- 薄层的整合改变了损伤开始地点,导致分层减少.
- 数字模型提供了对故障机制的见解,并验证了实验观察结果.
- 薄层钢筋有效地提高了粘接接头的承载能力.
结论:
- 混合复合板材结合了薄层,在粘合的单 Lap 关节中表现出优越的拉力性能.
- 薄层技术是减轻分层和提高复合材料接头强度的可行策略.
- 该研究为设计和应用先进的混合复合结构提供了有价值的数据.
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