Journal ArticleDOI
Sensitivity of embedded fibre optic Bragg grating sensors to disbonds in bonded composite ship joints
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TLDR
The potential application of embedded fiber optic Bragg grating sensors for health monitoring of adhesively bonded composite ship joints is investigated in this article, where Bragg sensors were embedded at various locations along the interface of glass-reinforced plastic composite joints with artificially introduced disbonds to assess their capability to detect bond line damage under in-plane shear and through-thickness tension.About:
This article is published in Composite Structures.The article was published on 2004-10-01. It has received 35 citations till now. The article focuses on the topics: Fiber Bragg grating.read more
Citations
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Journal ArticleDOI
Fiber Optic Sensors in Structural Health Monitoring
TL;DR: This paper provides a tutorial introduction, a comprehensive background on this subject and also a forecast of the future of OFS for SHM, including those from the renewable energy, transportation, civil engineering and the oil and gas industry sectors.
Patent
Fiber optic sensors
TL;DR: In this paper, a dielectric filter is applied directly to the sensing end of an optical fiber detector which has the characteristic that it reflects back a reference light beam of one wavelength while passing a sensing signal of a different wavelength which is modulated in some predetermined fashion beyond the filter.
Journal ArticleDOI
Damage assessment and monitoring of composite ship joints
TL;DR: In this paper, a typical monolithic glass fibre reinforced polymer composite T-joint is modeled and tested for structural health monitoring (SHM) and the performance of embedded optical fiber Bragg sensors in such joints has been shown to be satisfactory and the effects of artificially induced disbonds on the strain distribution have been determined via finite element modelling and have been experimentally verified.
Journal ArticleDOI
Strain-based Structural Health Monitoring of Complex Composite Structures
TL;DR: In this paper, a Structural Health Monitoring (SHM) system for a 2D polymeric composite T-joint, used in maritime structures, is presented, which is capable of detecting the presence of multiple delaminations in a composite structure, and also capable of determining the location and extent of all the delamination.
Journal ArticleDOI
Damage monitoring of CFRP stiffened panels under compressive load using FBG sensors
TL;DR: In this paper, the main impact damage was an interlaminar delamination inside the skin, which could be observed by an ultrasonic C-scan, which was more effective in evaluating the impact damages in detail than that using the center wavelength.
References
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Journal ArticleDOI
Damage detection and assessment in fibre-reinforced composite structures with embedded fibre optic sensors-review
TL;DR: In this article, a state-of-the-art review of the research and development of in situ fiber optic damage detection and assessment systems (FODDAS) embedded in fiber-reinforced composite structures is presented.
Journal ArticleDOI
Ship hull structure monitoring using fibre optic sensors
Gunnar Wang,Karianne Pran,G. Sagvolden,Geir Bjarte Havsgard,Alf Egil Jensen,Gregg Johnson,Sandeep T. Vohra +6 more
TL;DR: It is found that fibre optic sensors are well suited for ship hull monitoring and fibre Bragg grating technology that has been employed in the composite hull embedded sensor system project (CHESS) is presented.
Proceedings ArticleDOI
Innovative Materials for Aircraft Morphing
J O Simpson,S A Wise,Robert G. Bryant,Roberto J. Cano,Thomas S. Gates,Jeffrey A. Hinkley,R S Rogowski,K S Whitley +7 more
TL;DR: An overview of the research being conducted within the Materials Division at NASA Langley Research Center on the development of smart material technologies for advanced airframe systems is presented in this paper, where a portion of the ongoing research in each of these areas of materials research is presented.
Proceedings ArticleDOI
Fiber optic sensors for health monitoring of morphing aircraft
Timothy L. Brown,Karen Wood,Brooks A. Childers,Roberto J. Cano,Brian J. Jensen,Robert S. Rogowski +5 more
TL;DR: In this article, fiber optic sensors are developed for health monitoring of future aircraft, which will measure load and vibration signatures that will be used to infer structural integrity, including pressure, flow and shape sensors.
Proceedings ArticleDOI
In-situ health monitoring of a bonded composite patch using the strain ratio technique
TL;DR: In this paper, a prototype "Smart Patch Device" was used for patch state of health monitoring, which measured outputs from two piezo-electric sensors, one on the "patch" and one in the "far-field" from which was calculated a "Patch State of health".
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