Frequency Selective Surface for Structural Health Monitoring

Malaysian Technical Universities Conference on Engineering and Technology 2017

Azemi, Saidatul Norlyana^1 ; Wan Mustaffa, Farzana Hazira^1 ; Jamlos, Mohd Faizal^1 ; Al-Hadi, Azremi Abdullah^1 ; Soh, Ping Jack^1

Advanced Communication Engineering Centre (ACE) CoE, School of Computer and Communication Engineering, Universiti Malaysia Perlis (UniMAP), Pauh Putra, Arau

02600, Malaysia^1

关键词: Conventional sensors;    Frequency selective surface (FSS);    Geometrical changes;    Mechanical strain;    Reflection characteristics;    Simulation process;    Structural failure;    Structural health monitoring (SHM);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/318/1/012033/pdf
DOI  :  10.1088/1757-899X/318/1/012033

来源: IOP

【 摘 要 】

Structural health monitoring (SHM) technologies have attained attention to monitor civil structures. SHM sensor systems have been used in various civil structures such as bridges, buildings, tunnels and so on. However the previous sensor for SHM is wired and encounter with problem to cover large areas. Therefore, wireless sensor was introduced for SHM to reduce network connecting problem. Wireless sensors for Structural Health monitoring are new technology and have many advantages to overcome the drawback of conventional and wired sensor. This project proposed passive wireless SHM sensor using frequency selective surface (FSS) as an alternative to conventional sensors. The electromagnetic wave characteristic of FSS will change by geometrical changes of FSS due to mechanical strain or structural failure. The changes feature is used as a sensing function without any connecting wires. Two type of design which are circular ring and square loop along with the transmission and reflection characteristics of SHM using FSS were discussed in this project. A simulation process has shown that incident angle characteristics can be use as a data for SHM application.