Abstract
A fibre-optic Bragg grating sensor for flow-induced vibration measurement is described. The sensor is based on monitoring shift in the Bragg wavelength of a fibre Bragg grating. The fibre Bragg grating, when bonded onto a structure, can measure local axial strain variation of the structure. The strain can be related to the structural bending displacement. Experiments were conducted to measure the flow-induced vibration of a cylinder in a crossflow. The measurement results in terms of the natural frequency of the fluid-structure system and the vortex shedding frequency are consistent with the results obtained from a laser vibrometer. Fibre Bragg grating sensors have potential applications in the study of fluid-structure interactions of cylinder arrays in a crossflow.
| Original language | English |
|---|---|
| Pages (from-to) | 124-135 |
| Number of pages | 12 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3538 |
| Publication status | Published - 1 Jan 1999 |
| Event | Proceedings of the 1998 Process Monitoring with Optical Fibers and Harsh Environment Sensors - Boston, MA, United States Duration: 1 Jan 1999 → … |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering