嵌入3D打印自传感复合材料用于智能水泥组件
Han Liu1, Israel Sousa2, Simon Laflamme1,3
1Department of Civil, Construction, and Environmental Engineering, Iowa State University, Ames, IA 50010, USA.
Sensors (Basel, Switzerland)
|October 16, 2025
概括
这项研究将自传感材料集成到3D打印的混凝土中,用于条件评估. 混合制造可以监控打印质量,并检测3D打印结构中的缺陷.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 增材制造 增材制造 增材制造
背景情况:
- 土木工程中的3D打印 (3DP) 提供了优势,但在质量控制和组件独特性方面面临挑战.
- 之前的工作开发了3D打印可自传感的水泥材料,使用石墨粉和碳微纤维增强了压力抵抗性.
- 将这些自我传感材料集成到传统的3DP组件中是条件评估的关键.
研究的目的:
- 通过整合自传感材料,使固3D打印元件的状态评估成为可能.
- 为了研究3D打印的导电电极设计,以赋予应变传感能力.
- 在3DP中评估不同条纹图案的性能,用于自传感应用.
主要方法:
- 通过结合石墨粉和碳微纤维,开发了可3D打印的自我感应的水泥材料.
- 设计和研究了三种不同的3D打印条纹图案 (一条,两条和三条) 作为导电电极.
- 通过准静态和动态测试来表征应变感应能力.
主要成果:
- 三条纹设计表现出最高的灵敏度 (λstat = 669, λdyn = 630).
- 两条带设计实现了最高的信号质量 (SNRstat = 9.5 dB,SNRdyn = 10.8 dB).
- 证明了混合制造的可行性,将自传感材料集成到3DP中.
结论:
- 3D打印的自我感应的水泥材料可以集成到常规组件中进行状态评估.
- 开发的混合制造方法可以监控打印质量和缺陷识别.
- 这项技术可为3D打印建筑物中的实时结构健康监测提供便利.
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