疲劳损伤监测的评估使用导电性的单复合粘合剂联合使用导电性的监测
Chow-Shing Shin1, Shun-Hsuan Huang1
1Department of Mechanical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan.
Polymers
|August 29, 2024
概括
这项研究使用电阻变化来监测复合材料粘合剂关节的电阻变化,以检测疲劳解接. 阻力变化与解锁区域相关,揭示了结构健康监测 (SHM) 的明显失败机制.
科学领域:
- 材料科学与工程 材料科学与工程
- 结构健康监测 (SHM) 是一种结构健康监测.
- 复合材料 复合材料 复合材料
背景情况:
- 粘合剂接头被广泛使用,但很难检查是否降解.
- 需要结构健康监测 (SHM) 方法来评估关节完整性.
- 使用碳纳米管的导电粘合剂提供了一个低成本的SHM方法.
研究的目的:
- 调查电阻变化的使用,以监测复合材料单层粘合剂接头的疲劳解接.
- 为了将阻力变化与解束面积和疲劳寿命相关联.
- 了解影响阻力-解散关系的微机理.
主要方法:
- 用碳纳米管添加复合材料单层粘接接头的制造.
- 使用疲劳负荷来诱导解.
- 在疲劳测试期间监测电阻变化.
- 使用液体透技术量化解封面积.
- 使用扫描电子显微镜 (SEM) 进行断裂表面分析.
主要成果:
- 观察到脱皮面积和耗费疲劳寿命之间存在线性关系.
- 电阻变化与两个不同的趋势中的解锁面积相关.
- 在 SEM 分析中,发现了两个阻力变化趋势的不同微机理.
结论:
- 电阻监测是检测复合材料粘合剂接头疲劳解接的可行方法.
- 观察到的电阻变化的双重趋势为我们提供了对底层故障微机理的洞察.
- 了解这些机制对于基于电阻的SHM的实际实施至关重要.
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