The Applications on Dynamic Systems for Fiber Bragg Gratings
Date Issued
2004
Date
2004
Author(s)
Yeh, Yao-Wen
DOI
zh-TW
Abstract
Grating-based fiber sensors are simple and intrinsic and have all the advantages normally attributed to fiber sensors such as electromagnetic immunity, high sensitivity and multiplexing capabilities. Various applications in sensing static and low frequency response have been widely reported. However, some limitations, particularly in the capability of the sensing dynamic responses, may be needed for further investigations. The main objective of this thesis is to establish the experimental measuring system based on the grating-based fiber sensors to obtain the dynamic response of materials subjected to dynamic leadings. Another three measuring techniques, strain gage, laser Doppler vibrometer and NBS transducer, are also used in this study to verify the results obtained from grating-based fiber.
The frequencies of the applied loading are controlled by piezoelectric materials and are covered from low frequency (under 10Hz), middle frequency (101~102 Hz) and high frequency (~103Hz). The measurement of the transient response of the material subjected to dynamic impact loadings is also investigated in this study.
Subjects
動態反應
光纖光柵
感測器
Grating-based fiber
Sensors
Dynamic response
Type
thesis
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