在外接FRP混凝土结构中检测和定位缺陷 - - 选择方法的比较
Paweł Tworzewski1, Kamil Bacharz2, Wiktor Wciślik2
1Department of Building Structures, Kielce University of Technology, al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland.
Materials (Basel, Switzerland)
|November 27, 2025
概括
红外热学和声波速度有效检测纤维增强聚合物 (FRP) 混凝土结构中的缺陷. 红外热学独特地区分重叠的缺陷,提供卓越的缺陷定位能力.
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
- 结构健康监测 结构健康监测
背景情况:
- 外接纤维增强聚合物 (FRP) 复合材料对于加强混凝土结构至关重要.
- 检测这些粘合结构中的分层和空隙等缺陷对于安全性和寿命至关重要.
- 非破坏性测试 (NDT) 方法对于评估FRP-混凝土接口的完整性而不会造成损坏至关重要.
研究的目的:
- 为了比较红外热学 (IRT),地面透雷达 (GPR) 和声波速度 (AWV) 在FRP混凝土结构中检测缺陷的有效性.
- 评估这些NDT方法在区分重叠缺陷方面的能力.
- 为每种方法的优势,局限性和实际应用提供见解.
主要方法:
- 实验调查使用8个混凝土样本与结合的碳纤维增强聚合物 (CFRP) 条带.
- 包括无缺陷,单缺陷 (边缘和中心) 和重叠缺陷配置.
- 应用和比较红外热学,地面透雷达和声波速度测量技术.
主要成果:
- IRT和AWV都成功地检测到了粘合层和混凝土中的缺陷 (分层/空隙).
- GPR无法检测粘合层中的缺陷.
- 只有IRT证明了区分重叠缺陷的能力.
结论:
- IRT和AWV适用于检测FRP混凝土系统中的一般缺陷.
- 在识别复杂的缺陷场景,包括重叠的情况时,IRT提供了显著的优势.
- 该研究提供了比较分析,以指导选择适当的NDT方法用于FRP增强混凝土的结构健康监测.
关键词:
外部债券的FRP (EBR) 是一种外在债券.声波速度 (WVMM) 是指声波的速度.穿透地面的雷达 (GPR) 是一种雷达.红外热图 (IRT) 是指红外热图 (IRT) 是指红外热图.非破坏性测试 (NDT) 是一种非破坏性测试.结构性健康监测 (SHM) 是一种结构性健康监测.更多相关视频
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