https://scholars.lib.ntu.edu.tw/handle/123456789/634055
標題: | Three Dimensional Displacement Measurement of Transient Elastic Wave Propagation Using a Multidimensional Point-Wise Fiber Bragg Grating Displacement Sensor System | 作者: | Chuang, Kuo Chih CHIEN-CHING MA |
關鍵字: | Displacement Response | Displacement Sensor | Fiber Bragg Grating | Mode Shape | Thick Plate | 公開日期: | 1-一月-2010 | 卷: | 26 | 來源出版物: | IUTAM Bookseries | 摘要: | A fiber Bragg grating (FBG) sensor setup method that can allow the FBG to detect out-of-plane or in-plane point-wise displacement is demonstrated in this study. Based on this method, we successfully establish a multidimensional sensing system which contains one out-of-plane displacement sensor and two inplane displacement sensors to measure the transient elastic wave propagation in a square thick plate subjected to impact loadings. The proposed system employs wavelength-optical intensity modulation techniques based on a long-period fiber grating filter and two FBG filters. The transient responses of out-of-plane particle motions measured by the FBG displacement sensor are compared with those obtained simultaneously by a laser Doppler vibrometer (LDV). The experimental results show that the proposed FBG displacement sensor system is capable of performing real-time measurement of three dimensional dynamic displacements for transient elastic wave propagation. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/634055 | ISBN: | 978-90-481-9892-4 978-90-481-9893-1 |
ISSN: | 18753507 | DOI: | 10.1007/978-90-481-9893-1_28 |
顯示於: | 機械工程學系 |
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