Design and numerical simulation of parted crack sensor based on patch antenna

摘要：

　　A passive wireless parted sensor based on patch antenna is designed and simulated to monitor the expansion of cracks in this paper.The crack sensor is attached on the surface of the structure,and its two parts will generate relative displacement when structural crack develops,which results in capacitance change and make further effect on resonant frequency shift.The finite element model of the patch antenna is established in HFSS and cracks propagation is simulated by applying relative displacement between the two parts of sensor.Then the resonant frequency is extracted from return loss coefficient curve to be fitted with crack width.So the change of the crack width can be monitored by detecting the resonant frequency shift of patch antenna.

关键词： crack sensor patch antenna crack width resonant frequency

作者: Kangqian Xu Liyu Xie Songtao Xue

作者单位: Research Institute of Structure Engineering and Disaster Reduction,Tongji University,Shanghai,China Research Institute of Structure Engineering and Disaster Reduction,Tongji University,Shanghai,China;

会议类型: 国际会议

会议名称: The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)

会议地点: 青岛

会议语种:英文

页码: 1484-1492

在线出版日期: 2018-07-22（万方平台首次上网日期，不代表论文的发表时间）