一个混凝土核心空洞成像方法和参数分析的混凝土填充钢管成员使用旅行时间断层学:多物理模拟和实验研究
Wenting Zheng1,2, Bin Xu1,3, Zongjun Xia4
1College of Civil Engineering, Huaqiao University, Xiamen 361021, China.
Sensors (Basel, Switzerland)
|April 27, 2024
概括
这项研究引入了旅行时间断层扫描 (TTT) 来检测混凝土填充钢管 (CFST) 结构中的内部空隙. TTT准确地可视化缺陷大小和位置,增强结构安全评估.
科学领域:
- 土木工程 土木工程是指土木工程.
- 非破坏性测试是指非破坏性测试.
- 材料科学 材料科学 材料科学
背景情况:
- 混凝土填充钢管 (CFST) 成员为土木工程应用提供了卓越的机械性能.
- 在CFST结构中,空隙和解等内部缺陷会损害承载能力,刚性和整体安全性.
- 准确的内部缺陷可视化至关重要,但由于材料性能差异,具有挑战性.
研究的目的:
- 引入和验证一种用于定量识别和可视化CFST成员内部缺陷的新方法.
- 研究各种参数对缺陷成像的准确性和质量的影响.
- 在实验室环境中实验证实拟议方法的有效性.
主要方法:
- 利用基于曲线射线理论的旅行时间断层扫描 (TTT).
- 采用最小平方代线性反转算法进行定量分析.
- 进行数值模拟来评估参数效应 (权重矩阵,因子,网格大小).
- 在6个具有人工缺陷的CFST标本上进行实验验证.
主要成果:
- 成功识别并可视化了混凝土核心空隙的大小和位置.
- 确定了反转算法的最佳参数,以提高成像质量和准确性.
- 实验结果证实了TTT在缺陷检测方面的效率和可靠性.
结论:
- 旅行时间断层扫描 (TTT) 是检测CFST成员内部空洞的有效技术.
- 优化的参数显著提高了缺陷大小和位置识别的准确性.
- 经过验证的方法增强了CFST结构的安全评估和可用性监测.
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