通过使用基于碳墨的导电皮肤和电阻断层扫描来检测混凝土结构的疲劳裂
Chenning Cai1, Shaolin Chen1, Lina Liu1
1College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
Sensors (Basel, Switzerland)
|October 28, 2023
概括
这项研究提出了一种新的方法,用于检测混凝土结构中的裂,使用导电感应皮和电阻断层扫描 (ERT). 这种自动化结构健康监测系统有效地描绘了裂的发生和生长.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 结构健康监测 结构健康监测
背景情况:
- 混凝土结构容易在疲劳负荷下破裂,从而损害结构完整性.
- 自动化结构健康监测对于检测和管理混凝土退化至关重要.
- 现有的方法可能缺乏早期裂检测和增长跟踪所需的精度.
研究的目的:
- 开发和验证用于检测和成像混凝土结构裂的自动化系统.
- 研究导电感应皮肤与电阻断层扫描 (ERT) 结合用于裂监测的有效性.
- 评估在疲劳负荷条件下拟议方法的性能.
主要方法:
- 在混凝土表面上印碳墨水,以创建导电感应皮肤.
- 使用电阻断层扫描 (ERT) 来测量裂引起的导电性变化.
- 应用反向分析与总变化 (TV) 正规化用于断层图像重建.
- 在接受疲劳测试的混凝土梁上进行实验验证.
主要成果:
- 传感器皮肤通过破坏电导率来有效检测裂.
- ERT和电视规范化成功地重建了显示导电率变化的图像,这些变化表明了裂.
- 该方法在疲劳测试期间识别裂发生和生长方面表现出有效性.
- 验证了使用导电感应皮肤用于混凝土裂检测的可行性.
结论:
- 开发的感应皮肤和基于ERT的系统为具体结构健康监测提供了一个有前途的自动化解决方案.
- 这种方法可以早期检测和成像裂,这对于及时维护和安全至关重要.
- 该研究验证了导电感应皮肤和ERT对混凝土裂实时监测的有效性.
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