New Self-diagnostic Fiber Optical Sensor Technique for Structural Health Monitoring
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- 作者：Enrico Kö ; ppe ; enrico.koeppe@bam.de" class="auth_mail" title="E-mail the corresponding author ; Matthias Bartholmai ; Werner Daum ; Xin Gong ; Detlef Holmann ; Frank Basedau ; Vivien Schukar ; Anja Westphal ; Mario Sahre ; Uwe Beck
- 关键词：Self-diagnostic fiber optical sensor ; magnetostrictive metal coating ; magnetic field ; fiber bragg grating
- 刊名：Materials Today: Proceedings
- 出版年：2016
- 出版时间：2016
- 年：2016
- 卷：3
- 期：4
- 页码：1009-1013
- 全文大小：673 K
文摘
Fiber optic sensors have gained increasing importance in recent years and are well established in many areas of industrial applications. In this paper, we introduce a concept of a self-diagnostic fiber optic sensor. The presented sensor is to resolve the problems of embedded fiber optic sensors in complex structures and to enable the validation under operational conditions. For this purpose, different magnetostrictive coated fiber optic sensors were developed and various experiments were performed to verify their mode of operation and to determine the respective reproducibility. The measuring principle is illustrated by obtained experimental results, which showed a change in wavelength from 1 pm at a magnetic field strength change of 0.25 mT. In addition, the temperature characteristics of the implemented magnetostrictive sensor were analyzed and an experimental factor of 1.5 compared to a reference fiber optic sensor was determined.