具有材料功能的冲击探测和损坏定位系统,使用形状记忆合金形复合材料
Williams Adeyemi1, WeeLiam Khor1, Francesco Ciampa1
1School of Mechanical Engineering Sciences, University of Surrey, Guildford GU2 7XH, UK.
Sensors (Basel, Switzerland)
|December 9, 2023
概括
形状记忆合金 (SMA) 合复合材料提供了增强的结构完整性. 这项研究证明了它们的自我传感能力,可以通过电阻变化实时检测冲击和分层.
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:
- 形状记忆合金 (SMA) 合复合材料增强结构关节的强度和断裂性等机械性能.
- 自传感能力对于实时结构性健康监测至关重要.
研究的目的:
- 为了研究SMA的碳/环氧复合T关节的自传感功能.
- 为了能够在现场进行应变监测,以检测低速冲击.
主要方法:
- 在SMA的碳/环氧复合T关节上进行了低速度撞击测试 (5J和10J).
- 一个Arduino Mega控制器被用来记录SMA的实时电阻变化.
- 该系统的设计是为了在冲击引起的变形引起的突然阻力变化时触发.
主要成果:
- 支持SMA的检测系统准确地捕获了撞击的时间.
- 该系统成功地定位了分层的开始.
- SMA 纤维的电阻突然变化与冲击事件相关.
结论:
- SMA形复合材料具有用于结构健康监测的多功能功能.
- 拟议的系统展示了有效的实时检测和本地化冲击和分层.
- 这项技术有望在复合结构中进行先进的损伤检测.
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