基于导电油墨层电阻层析成像的混凝土裂缝损伤识别  

Detection of Crack Damage for Concrete by Conductive Ink Layer and Electrical Resistance Tomography

作　　者：蔡晨宁 陈少林 刘丽娜[2] CAI Chenning;CHEN Shaolin;LIU Lina(College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing Jiangsu 211106,China;Jincheng College,Nanjing University of Aeronautics and Astronautics,Nanjing Jiangsu 211156,China)

机构地区：[1]南京航空航天大学民航学院,江苏南京211106 [2]南京航空航天大学金城学院,江苏南京211156

出　　处：《传感技术学报》2024年第6期1084-1089,共6页Chinese Journal of Sensors and Actuators

摘　　要：为解决混凝土裂缝损伤的监测问题,提出利用石墨烯碳油墨在混凝土表面制备导电层,利用电阻层析成像技术进行裂缝损伤识别。通过比较损伤前后导电层边界电压变化,利用TV-SB正则化算法重建损伤引起的电导率变化分布图像以确定裂缝损伤情况。分别进行人工模拟裂缝和混凝土梁弯曲裂缝检测实验,来验证所提方法对裂缝损伤识别的效果。实验结果表明,导电油墨层性能良好,电阻层析成像技术重建的电导率变化图像能够较好地反映裂缝损伤的位置和长度等信息,可为混凝土裂缝损伤的监测和识别提供一种有前景的技术。To solve the monitoring problem of crack damage for concrete,graphene carbon ink is used to prepare a conductive layer on the surface of concrete,and electrical resistance tomography technology is adopted to identify crack damage.By comparing the change of the boundary voltage of the conductive layer before and after the damage,TV-SB regularization algorithm is used to reconstruct the dis-tribution image of the conductivity change caused by damage to determine information about the crack damage.Experiments for detection of artificial crack and crack in bending beam are carried out respectively to validate the effectiveness of the proposed method for crack identification.The experimental results show that the performance of the conductive ink layer is good,and the conductivity change image reconstructed by using electrical resistance tomography technology can well reflect the location and length of crack dam-age,providing a promising technology for monitoring and identifying concrete crack damage.

关 键 词：混凝土结构监测 电阻层析成像 裂缝损伤识别 导电油墨层 

分 类 号：V241[航空宇航科学与技术—飞行器设计]