| 刘明维,何加斌,陈 结.内河水沙冲蚀条件下港口钢构件涂层损伤劣化的图像识别方法*[J].水运工程,2024,(3):20-26 |
| 内河水沙冲蚀条件下港口钢构件涂层损伤劣化的图像识别方法* |
| Image recognition method for damage and deterioration of coatings on harbor steel components under erosion conditions of inland river and sand |
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| DOI： |
| 中文关键词: 水沙冲蚀 港口钢结构 涂层 损伤劣化 图像识别 |
| 英文关键词:water and sand erosion port steel structure coating damage and deterioration image recognition |
| 基金项目:国家自然科学基金项目（52279124）；重庆市技术创新与应用发展专项（CSTB2022TIAD-KPX0097） |
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| 中文摘要: |
| 为探究内河港口码头钢构件在水沙冲蚀条件下防腐涂层的损伤劣化规律，通过自制的水沙加速冲蚀磨损装置开展不同冲蚀条件下涂层材料损伤劣化的试验研究，基于图像识别技术对冲蚀损伤后的涂层表面形貌进行数字化和二值化特征提取，设定区分像素孔隙的灰度阈值，用以定量分析涂层表面破坏形式和损伤劣化面积。结果表明：当来流角度呈45°时，涂层损伤劣化最严重且表面凹坑比和划痕比大致相同，涂层损伤劣化面积随来流速度的增大呈指数扩大趋势；当含沙量低于45 kg/m3时，含沙量的增大对涂层损伤劣化有促进作用，但当超过45 kg/m3后反而降低了涂层损伤劣化速率，实现了在无损情况下对内河水沙冲蚀条件下钢构件涂层的损伤劣化规律分析。 |
| 英文摘要: |
| To explore the law of damage and degradation of anti-corrosion coatings on steel components of inland ports under water-sand erosion conditions，experimental research is conducted on the damage and degradation of coating materials under different erosion conditions using a self-made water-sand accelerated erosion wear device.Based on image recognition technology，digital and binary feature extraction is carried out to hedge the surface topography of coatings after corrosion damage.The gray threshold of distinguishing pixel pores is set to quantitatively analyze the damage form and degradation area of the coating surface.The results show that when the inflow angle is 45°，the damage and deterioration of the coating are the most serious，and the pitting ratio and scratch ratio are roughly the same.The damage and deterioration area of the coating increases exponentially with the increase of the inflow velocity.When the sand content is less than 45 kg/m3，the increase of the sand content can promote the damage and deterioration of the coating，but when it is more than 45 kg/m3，it reduces the damage and deterioration rate of the coating，which realizes the damage and deterioration law analysis of the steel component coating under the erosion condition of inland river and sand without damage. |
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