An investigation of spectral response of embedded Fibre Bragg Grating (FBG) sensors in a hollow composite cylindrical beam under pure torsion and combined loading

Kahandawa, Gayan C. and Epaarachchi, Jayantha A. and Wang, Hao and Followell, David and Birt, Peter and Canning, John and Stevenson, Michael (2010) An investigation of spectral response of embedded Fibre Bragg Grating (FBG) sensors in a hollow composite cylindrical beam under pure torsion and combined loading. In: 6th Australasian Congress on Applied Mechanics (ACAM 6), 12-15 Dec 2010, Perth, Australia.

Abstract

This paper details an investigation of the response spectra of an FBG sensor embedded in a cylindrical hollow composite beam which is subjected to pure torsion and torsion - bending combined loading. The spectra of embedded FBG sensors under torsional and combined loading were obtained and post processed in order to investigate the performances of FBG sensors in torsional strain measurements. Further, the spectra of the embedded FBGs located at the vicinity of the points of damage inside the tube were also investigated to identify the spectral changes due to the damage. A detailed finite element mesh was created for the hollow beam specimen and static analysis was performed for comparison. It has been found that the FEA results are in good agreement with the experimental results. Further, it has been observed that the reflected spectrums of FBG sensors were chirped due to a possible warping of the FBG sensor due to torsional loading.


Statistics for USQ ePrint 9316
Statistics for this ePrint Item
Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Publisher does not formally support archiving.
Depositing User: Dr Gayan Chanaka Kahandawa Appuhamillage
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 05 Jan 2011 08:48
Last Modified: 03 Jul 2013 00:10
Uncontrolled Keywords: FBG sensors; composite materials; structural health monitoring
Fields of Research (FOR2008): 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0906 Electrical and Electronic Engineering > 090605 Photodetectors, Optical Sensors and Solar Cells
Socio-Economic Objective (SEO2008): B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870399 Construction Materials Performance and Processes not elsewhere classified
URI: http://eprints.usq.edu.au/id/eprint/9316

Actions (login required)

View Item Archive Repository Staff Only