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Materials 2016, 9(5), 374; doi:10.3390/ma9050374

Fatigue Damage Monitoring of a Composite Step Lap Joint Using Distributed Optical Fibre Sensors

1
Department of Mechanical & Aerospace Engineering, Monash University, Wellington Road, Clayton, VIC 3168, Australia
2
Aerospace Division, Defence Science and Technology Group, 506 Lorimer Street, Fishermans Bend, VIC 3207, Australia
3
Department of Civil Engineering, Monash University, Clayton, VIC 3168, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Ferri M.H. Aliabadi
Received: 24 March 2016 / Revised: 28 April 2016 / Accepted: 9 May 2016 / Published: 14 May 2016
(This article belongs to the Special Issue Advances in Structural Health Monitoring for Aerospace Structures)
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Abstract

Over the past few decades, there has been a considerable interest in the use of distributed optical fibre sensors (DOFS) for structural health monitoring of composite structures. In aerospace-related work, health monitoring of the adhesive joints of composites has become more significant, as they can suffer from cracking and delamination, which can have a significant impact on the integrity of the joint. In this paper, a swept-wavelength interferometry (SWI) based DOFS technique is used to monitor the fatigue in a flush step lap joint composite structure. The presented results will show the potential application of distributed optical fibre sensor for damage detection, as well as monitoring the fatigue crack growth along the bondline of a step lap joint composite structure. The results confirmed that a distributed optical fibre sensor is able to enhance the detection of localised damage in a structure. View Full-Text
Keywords: fatigue test; step lap joint; structural health monitoring; distributed optical fibre sensor; adhesion; composite structure fatigue test; step lap joint; structural health monitoring; distributed optical fibre sensor; adhesion; composite structure
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wong, L.; Chowdhury, N.; Wang, J.; Chiu, W.K.; Kodikara, J. Fatigue Damage Monitoring of a Composite Step Lap Joint Using Distributed Optical Fibre Sensors. Materials 2016, 9, 374.

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