Author:
Yujian Song,Ronghong Cui,Yuting He,Tao Chen,Xianghong Fan
Abstract
Abstract
On-line quantitative monitoring of fatigue crack sensors is an important part of structural health monitoring systems. A rectangular grid-type PVD (physical vapor deposition) thin film sensor based on the potentiometric method is designed in this paper. First, the sensor finite element model is established through the AC/DC module of COMSOL Multiphysics to verify the feasibility of the sensor to monitor cracks. Second, the effect of the number of sensing channels on the sensitivity of the sensor is studied. Finally, the structural parameters of the sensor are optimized. Significantly improved sensitivity for crack detection. The results show that the rectangular grid PVD film sensor can effectively monitor structural cracks.
Subject
General Physics and Astronomy
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