Spatial Performance of Acousto-Ultrasonic Fiber Bragg Grating Sensor

Author

Wild, Graham ; Hinckley, Steven

Author_Institution

Sch. of Eng., Edith Cowan Univ., Perth, WA, Australia

Volume

10

Issue

4

fYear

2010

fDate

4/1/2010 12:00:00 AM

Firstpage

805

Lastpage

806

Abstract

In this letter, we present results for the spatial performance of a fiber Bragg grating (FBG) sensor to continuous-wave acousto-ultrasonic (AU) signals. The FBG AU sensor is an intensity sensor, using a transmit reflect detection system. The AU sensor was used to receive actively generated continuous-wave ultrasonic signals from a PZT transducer. We present results showing the received signal strength as a function of longitudinal, lateral, and angular separation in small aluminum panels. Measurements were taken for distances of less then 100 mm and at angles from 0 to 90Â° between the sensor and the transducer. These results show no direct dependence between the received signal strength and the spatial separation, in the range considered. Only variations due to interference were observed.

Keywords

Bragg gratings; acoustic transducers; fibre optic sensors; piezoelectric transducers; ultrasonic transducers; FBG sensor; PZT transducer; continuous-wave acoustoultrasonic fiber Bragg grating sensor; spatial performance; transmit reflect detection system; Acoustic signal detection; Acoustic transducers; Aluminum; Bragg gratings; Fiber gratings; Gold; Sensor systems; Signal generators; Ultrasonic transducers; Ultrasonic variables measurement; Acousto-ultrasonics; fiber Bragg grating; optical fiber sensing; structural health monitoring;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2009.2038232

Filename

5427257