Online bridge crack monitoring with smart film.
Smart film crack monitoring method, which can be used for detecting initiation, length, width, shape, location, and propagation of cracks on real bridges, is proposed. Firstly, the fabrication of the smart film is developed. Then the feasibility of the method is analyzed and verified by the mechanical sensing character of the smart film under the two conditions of normal strain and crack initiation. Meanwhile, the coupling interference between parallel enameled wires of the smart film is discussed, and then low-frequency detecting signal and the custom communication protocol are used to decrease interference. On this basis, crack monitoring system with smart film is designed, where the collected crack data is sent to the remote monitoring center and the cracks are simulated and recurred. Finally, the monitoring system is applied to six bridges, and the effects are discussed.
Department of Information Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Benniu
B
Zhang
Department of Information Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Shuliang
S
Wang
Department of Information Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Xingxing
X
Li
Department of Information Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Zhixiang
Z
Zhou
Department of Information Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Xu
X
Zhang
Department of Information Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Guang
G
Yang
Department of Information Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Minfeng
M
Qiu
D020407:Internet; D008962:Models, Theoretical; D058998:Remote Sensing Technology; D055883:Structure Collapse