| 摘要: |
| 提出了基于高分子导电膜拉敏效应的混凝土裂缝红外热成像检测方法.结果表明：在外部电压源激励作用下，涂覆在混凝土试件表面导电膜中的导电粒子由于隧道效应形成导电通路，混凝土裂缝处可形成局部热效应温度场，红外热成像仪能够分辨出混凝土裂缝位置及走向.该方法检测 |
| 关键词: 混凝土 裂缝 红外热图像 |
| DOI：10.3969/j.issn.1007 9629.2013.02.018 |
| 分类号: |
| 基金项目:“十二五”国家科技支撑计划项目（2012BAK05B02）；重庆高校优秀成果转化项目(KJZH11222) |
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| Study on Distributed Monitoring Technology of |
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Infrared Thermal Image of Concrete Crack DENG An zhong1, ZHAO Qi lin2, LI Sheng bo1, SHEN Xiao dong1, WANG You jun1, JIANG Shuang bin3
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1.Department of Barracks Management and Environmental Engineering, Logistic Engineering University, Chongqing401311, China;2.College of Field Engineering, PLA University of Science & Technology, Nanjing 210007, China;3.Department of Science and Research, Logistic Engineering University, Chongqing 401311, China
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| Abstract: |
| A detection method of crack infrared thermal image based on tensile sensitive effect of polymer conductive films was proposed. The results show that under external power excitation, conductive particles in the conductive film coated on the surface of concrete form conductive pathway due to tunnel effect. Temperature field of local thermal effect on the surface of concrete crack can be shown with the result that crack location and direction are shown by infrared thermal image. Crack accuracy of detection is 0.04mm. Crack width scope of detection is among 0.040.30 mm. Detection distance reaches 40 m. Concrete crack can be detected rapidly in large areas by distributed monitoring in remote, non contact way. |
| Key words: concrete crack infrared thermal image |
