使用声辐射技术研究纳米修饰多层分层复合材料的柔性行为
Sajad Alimirzaei1, Reza Barbaz-Isfahani1, Arash Khodaei2
1Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran.
Ultrasonics
|January 19, 2024
概括
添加纳米颗粒,如纳米和碳纳米管,显著提高了玻璃/环氧复合材料的柔性强度,具有多重分层. 声辐射分析有助于监测这些增强材料中的损伤机制.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 纳米技术纳米技术
背景情况:
- 多重分层是复合材料的关键损坏机制,降低了强度.
- 纳米粒子提供了一种有前途的方法来增强复合材料的性能.
研究的目的:
- 研究纳米二氧化和碳纳米管对玻璃/环氧复合材料具有多重分层的柔性行为的影响.
- 使用声辐射 (AE) 技术分析损伤机制.
- 为了比较AE信号分类的集群方法.
主要方法:
- 制造有人工分层的玻璃/环氧复合材料.
- 添加纳米和碳纳米管作为纳米添加剂.
- 柔性测试用于评估机械性能.
- 音响发射 (AE) 技术用于损害监测.
- 基因K-平均值和对AE信号分析的层次聚类.
- 波段数据包转换用于损坏机制的评估.
主要成果:
- 多重分层可以显著降低曲性质.
- 纳米添加剂 (纳米和碳纳米管) 大大改善了多层分层复合材料的柔性行为.
- 通过0.3%重量%的纳米二氧化+0.5%重量%的碳纳米管观察到最佳增强.
- 在AE信号分类方面,等级聚类证明比基因K-手段更有效.
- 正如AE信号分析所显示的那样,纳米颗粒的纳入影响着不同的损伤机制.
结论:
- 纳米添加剂有效地减轻了玻璃/环氧复合材料中多重分层的有害影响.
- 声波发射,加上先进的聚类技术,为损伤机制提供了宝贵的见解.
- 这项研究强调了纳米复合材料在改善结构完整性和损坏监测方面的潜力.
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