使用边缘投影技术高效评估混凝土断裂表面粗度
Meiling Dai1, Xirui Wang1, Cheng Cheng1
1School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China.
Materials (Basel, Switzerland)
|June 28, 2023
概括
本研究介绍了一种非接触边缘投射方法,用于测量混凝土断裂表面粗度. 该技术准确量化了表面特征,发现碎形维度对形状变化比粗度更敏感.
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
- 光学计量学 在光学计量学
背景情况:
- 准确的混凝土表面粗度评估在土木工程中至关重要.
- 现有的方法可能是基于接触的,或者对复杂的断裂表面效率较低.
研究的目的:
- 开发一种无接触,高效的边缘投射方法来测量混凝土断裂表面粗度.
- 为了提高测量精度和效率,使用一种新的相位校正技术.
主要方法:
- 利用边缘投射技术进行非接触面的测量.
- 实施了一种简单的相位校正方法,并添加了用于相位解封的条形图像.
- 进行了各种混凝土断裂表面的3D重建.
主要成果:
- 实现了平面高度的测量误差小于0.1mm,圆柱形物体的相对精度为0.1%.
- 观察到表面粗度 (R) 和碎形尺寸 (D) 随着混凝土强度的提高或水与水泥的比率的降低而下降.
- 发现碎形维度 (D) 对混凝土表面形状变化比表面粗度 (R) 更敏感.
结论:
- 提出的边缘投射方法是有效和准确的,用于评估混凝土断裂表面粗度.
- 这些发现将表面特征 (R,D) 与混凝土性能 (强度,水与水泥的比率) 相关联.
- 碎形维度为混凝土表面地形分析提供了更敏感的度量.
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