A study into strain sensor of cement-based material using CPW transmission lines

IF 0.8 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Frequenz Pub Date : 2024-02-09 DOI:10.1515/freq-2023-0258

Chunyan Song, Mo Li, Weidong Zhang, Xiaodong Wu, Song Gao

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Abstract

Based on the theory of coplanar waveguide (CPW) transmission line, a novel microwave non-destructive strain monitoring sensor specifically designed for cement-based material structures is presented in this study. The aim is to establish the relationship between the variation of the S11 phase parameter of the CPW strain sensor and the structural strain, utilizing a linear analysis. The feasibility of the strain monitoring by the CPW sensor is validated through simulations and experiments. The obtained results demonstrate a strong linear correlation between the phase change of the S11 parameter and the strain, with a goodness of fit of 0.987. The simulated strain sensor exhibits a sensitivity of 48.83 ppm/με, while the experimental measurement sensor shows a sensitivity of 65.82 ppm/με. These findings highlight the potential significance of the proposed method, offering a new approach that is characterized by high sensitivity, low cost, and simplicity for strain monitoring in concrete structures. Among them, the sensor cement mortar matrix made in this study was mixed with the recycled material made of waste glass steel FRP after a certain treatment process. The development of this method holds promise for the advancement of health monitoring in concrete structures.

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利用 CPW 传输线研究水泥基材料的应变传感器

本研究以共面波导（CPW）传输线理论为基础，提出了一种专门针对水泥基材料结构设计的新型微波无损应变监测传感器。其目的是通过线性分析，建立共面波导应变传感器的 S11 相位参数变化与结构应变之间的关系。通过模拟和实验验证了 CPW 传感器应变监测的可行性。结果表明，S11 参数的相位变化与应变之间具有很强的线性相关性，拟合优度为 0.987。模拟应变传感器的灵敏度为 48.83 ppm/με，而实验测量传感器的灵敏度为 65.82 ppm/με。这些发现凸显了所提方法的潜在意义，为混凝土结构的应变监测提供了一种具有高灵敏度、低成本和简便性特点的新方法。本研究中的传感器水泥砂浆基体是由废玻璃钢玻璃钢经过一定处理工艺制成的再生材料混合而成。这种方法的开发为混凝土结构健康监测的进步带来了希望。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frequenz 工程技术-工程：电子与电气

CiteScore

2.40

自引率

18.20%

发文量

审稿时长

3 months

期刊介绍： Frequenz is one of the leading scientific and technological journals covering all aspects of RF-, Microwave-, and THz-Engineering. It is a peer-reviewed, bi-monthly published journal. Frequenz was first published in 1947 with a circulation of 7000 copies, focusing on telecommunications. Today, the major objective of Frequenz is to highlight current research activities and development efforts in RF-, Microwave-, and THz-Engineering throughout a wide frequency spectrum ranging from radio via microwave up to THz frequencies. RF-, Microwave-, and THz-Engineering is a very active area of Research & Development as well as of Applications in a wide variety of fields. It has been the key to enabling technologies responsible for phenomenal growth of satellite broadcasting, wireless communications, satellite and terrestrial mobile communications and navigation, high-speed THz communication systems. It will open up new technologies in communications, radar, remote sensing and imaging, in identification and localization as well as in sensors, e.g. for wireless industrial process and environmental monitoring as well as for biomedical sensing.