H. Cao, C. Jebali, A. Kouki, Shreyas K. Thakar, C. Nguyen, Smitha M. N. Rao, J. Chiao
{"title":"Development of a laser micro-machined interdigitated capacitive strain sensor for structural health monitoring applications","authors":"H. Cao, C. Jebali, A. Kouki, Shreyas K. Thakar, C. Nguyen, Smitha M. N. Rao, J. Chiao","doi":"10.1109/ICSENS.2014.6985360","DOIUrl":null,"url":null,"abstract":"Monitoring of structural health plays a crucial role in condition-based maintenance and prediction of unsafe or damaged infrastructures. We have developed an interdigitated capacitive (IDC) strain sensor integrated in a wireless monitoring system that could be used for structural health monitoring (SHM). The 125-μm thin brass IDC sensors were fabricated by laser micromachining followed by an encapsulation in a deformable polymer. The wireless monitoring system was implemented using a commercial wireless module Texas Instruments eZ430-RF2500 for use with multiple sensors simultaneously. A graphical user interface (GUI) was developed to store data and perform real-time analysis remotely. The wireless communication distance was up to 35 m inside buildings. The sensors were characterized and the entire system was demonstrated with both single and dual sensors. Our system is also capable of multi-modality sensing for continuous and real-time monitoring.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"78 1","pages":"1741-1744"},"PeriodicalIF":0.0000,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE SENSORS 2014 Proceedings","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSENS.2014.6985360","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
Monitoring of structural health plays a crucial role in condition-based maintenance and prediction of unsafe or damaged infrastructures. We have developed an interdigitated capacitive (IDC) strain sensor integrated in a wireless monitoring system that could be used for structural health monitoring (SHM). The 125-μm thin brass IDC sensors were fabricated by laser micromachining followed by an encapsulation in a deformable polymer. The wireless monitoring system was implemented using a commercial wireless module Texas Instruments eZ430-RF2500 for use with multiple sensors simultaneously. A graphical user interface (GUI) was developed to store data and perform real-time analysis remotely. The wireless communication distance was up to 35 m inside buildings. The sensors were characterized and the entire system was demonstrated with both single and dual sensors. Our system is also capable of multi-modality sensing for continuous and real-time monitoring.