Patch antenna sensor rosettes for surface strain measurement

作     者：Li, Dan Cho, Chunhee Wang, Yang 

作者机构：School of Civil and Environmental Engineering Georgia Institute of Technology AtlantaGA United States Department of Civil and Environmental Engineering and Construction University of Nevada Las VegasNV United States 

出 版 物：《Proceedings of the Institution of Civil Engineers: Smart Infrastructure and Construction》 (Proc. Inst. Civ. Eng., Smart infrastruct. constr.)

年 卷 期：2017年第170卷第2期

页      面：39-49页

核心收录：

基　　金：This material is based on work sponsored by the Inspecting and Preserving Infrastructure through Robotic Exploration (INSPIRE) University Transportation Center through the US Department of Transportation/Office of the Assistant Secretary for Research and Technology grant 69A3551747126. The first author is partially supported by the Chinese Scholarship Council (201406260201). Any opinions  findings and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the view of the sponsors 

主　　题：Microstrip antennas 

摘      要：Passive (battery-free) wireless patch antenna sensors have been developed in recent years for strain sensing, to provide convenient and low-cost instrumentation. Despite past efforts, current analytical and experimental studies have mainly focused on performance in single-axial measurement, which is simple and unrealistic from typically encountered arbitrary plane stress fields. This paper presents strain sensor rosettes made of folded patch antennas and slotted patch antennas for measuring an arbitrary surface strain (plane stress) field. The transverse strain effect of both sensors is discussed and has been validated through laboratory experiments. Multiphysics coupled simulation is conducted to describe accurately the mechanical and electromagnetic behaviours of antenna sensors. Resonance frequency shifts of the antenna sensors are used to derive the three strain components in an arbitrary plane stress scenario-that is, two normal and one shear strain components. Both numerical studies and experimental validations have been performed. © ICE Publishing: All rights reserved.