Title :
Acoustic emission detection using optical fiber based fabry perot sensor and quadrature recombination technique
Author :
Pappu, Raja P. ; Zhang, Wei ; Bennion, Ian ; Sugden, Kate
Author_Institution :
Photonics Res. Group, Aston Univ., Birmingham, UK
Abstract :
In this paper we propose a novel fiber Bragg grating Fabry-Perot (FBG FP) fiber sensor for the detection of acoustic emission generated by the formation of structural defects in carbon composite structures.By setting the wavelengths of the two lasers in quadrature the measurement sensitivity can be maintained in spite of environmental perturbation, making this approach practical for real time applications.
Keywords :
Bragg gratings; acoustic emission testing; fibre optic sensors; flaw detection; measurement by laser beam; FBG FP sensor; Fabry Perot sensor; acoustic emission detection; carbon composite structure; environmental perturbation; fiber Bragg grating; laser wavelength; measurement sensitivity; quadrature recombination technique; real time application; Acoustic emission; Acoustic sensors; Acoustic signal detection; Bragg gratings; Fabry-Perot; Fiber gratings; Optical detectors; Optical fiber sensors; Optical fibers; Optical sensors;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5196276
