Abstract
Fiber Bragg gratings (FBGs) have being seen for a growing application in the field of structural health monitoring (SHM) because of their lightweight features. This letter introduces an adaptive SHM sensing system based on the ultrasonic guided wave (UGW) and FBG sensor technology. First, the capability of the proposed SHM sensing system used to detect UGW is demonstrated by the frequency detection of Rayleigh wave that is generated by the piezoelectric transducers with a function generator. Furthermore, a nanosecond pulse laser is utilized to generate Lamb wave on an aluminum plate, while the SHM sensing system is employed to detect the wave in a long distance. Finally, the SHM sensing system is used to locate the source of Rayleigh wave that is created by a pulsed laser. The experiment results show the proposed SHM sensing system is capable of localizing and monitoring the UGW by using four FBG cascaded on a loaded aluminum plate.
| Original language | English |
|---|---|
| Pages (from-to) | 2573-2576 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 28 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - 15 Nov 2016 |
Keywords
- All-fiber adaptive sensing
- fiber Bragg grating sensors
- laser ultrasonic
- structural health monitoring
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering