Dr. Claire E. Davis Profile

Dr. Claire E. Davis

at Defence Science and Technology Group

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Author

Publications (17)

Proceedings Article | 30 December 2019 Paper

Distributed fibre optic pressure sensors designed for composite propeller integration

Tim Booker, Claire Davis, John Arkwright

Proc. SPIE. 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019

KEYWORDS: Optical design, Data modeling, Fiber optics, Fiber Bragg gratings, Sensors, Composites, Manufacturing, Ocean optics

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Proceedings Article | 12 April 2017 Paper

Effect of gauge length on embedded fibre Bragg grating sensor response in woven fibre composites

Claire Davis, Andrew Philips, Patrick Norman, Nik Rajic

Proc. SPIE. 10168, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017

KEYWORDS: Optical fibers, Refractive index, Detection and tracking algorithms, Fiber Bragg gratings, Reflection, Sensors, Polymers, Glasses, Composites, Inspection, Reflectivity, Nondestructive evaluation, Optical tracking

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Proceedings Article | 20 April 2016 Presentation + Paper

Fiber optic approach for detecting corrosion

Roman Kostecki, Heike Ebendorff-Heidepriem, Claire Davis, Grant McAdam, Tianyu Wang, Tanya Monro

Proc. SPIE. 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016

KEYWORDS: Optical fibers, Optical sensing, Polymethylmethacrylate, Silica, Fiber optics, Sensors, Signal attenuation, Polymers, Glasses, Optical coatings, Corrosion, Nondestructive evaluation, Fiber optics sensors, Structural health monitoring, Aluminum, Smart structures, Geometrical optics, Micro optical fluidics

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Proceedings Article | 20 April 2016 Paper

Limits to acoustic sensing and modal decomposition using FBGs

Patrick Norman, Claire Davis, Cédric Rosalie, Nik Rajic

Proc. SPIE. 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016

KEYWORDS: Laser sources, Refractive index, Fiber Bragg gratings, Sensors, Diagnostics, Wave plates, Distortion, Vibrometry, Laser Doppler velocimetry, Structural health monitoring, Aluminum, Wave sensors, Acoustics

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Proceedings Article | 31 January 2012 Paper

High strain FBG sensors for structural fatigue testing of military aircraft

S. Tejedor, J. Kopczyk, T. Nuyens, C. Davis

Proc. SPIE. 8351, Third Asia Pacific Optical Sensors Conference

KEYWORDS: Packaging, Defense and security, Optical fibers, Fiber Bragg gratings, Sensors, Glasses, Ultraviolet radiation, Coating, Resistance, Adhesives

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Proceedings Article | 17 May 2011 Paper

Development of an integrated fibre optic sensing network for a composite rudder

Claire Davis, Ivan Grabovac, Roger Crane, Colin Ratcliffe

Proc. SPIE. 7753, 21st International Conference on Optical Fiber Sensors

KEYWORDS: Packaging, Optical fibers, Fiber optics, Fiber Bragg gratings, Sensors, Glasses, Composites, Coating, Connectors, Optical networks

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Proceedings Article | 1 April 2010 Paper

Broad-area detection of structural irregularities in composites using fibre Bragg gratings

Claire Davis, Patrick Norman, Scott Moss, Colin Ratcliffe, Roger Crane

Proc. SPIE. 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010

KEYWORDS: Fiber Bragg gratings, Sensors, Composites, Inspection, Photodiodes, Ultrasonics, Optical testing, Structural health monitoring, Shape analysis, Environmental sensing

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Proceedings Article | 5 October 2009 Paper

Exposed-core microstructured fibres for real-time fluorescence sensing

Stephen Warren-Smith, Heike Ebendorff-Heidepriem, Tze Cheung Foo, Roger Moore, Claire Davis, Tanya Monro

Proc. SPIE. 7503, 20th International Conference on Optical Fibre Sensors

KEYWORDS: Sensors, Etching, Capillaries, Glasses, Luminescence, Structured optical fibers, Quantum dots, Time metrology, Micro optical fluidics, Absorption

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Proceedings Article | 30 March 2009 Paper

Temperature-independent Bragg grating-based sensor for monitoring regions of localised strain concentration

Claire Davis, William G. Brown, Paul Stoddart

Proc. SPIE. 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009

KEYWORDS: Optical fibers, Optical filters, Fiber Bragg gratings, Reflection, Sensors, Composites, Photodiodes, Aluminum, Environmental sensing, Temperature metrology

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Proceedings Article | 16 May 2008 Paper

Fail-safe sensor for structural health monitoring

Annelene Dethlefsen, Henry C. Li, Claire Davis, Paul Stoddart

Proc. SPIE. 7004, 19th International Conference on Optical Fibre Sensors

KEYWORDS: Photodetectors, Optical design, Light sources, Fiber Bragg gratings, Sensors, Composites, Structural health monitoring, Finite element methods, Signal detection, Aircraft structures

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Proceedings Article | 16 May 2008 Paper

Validation of Bragg grating measurements of acoustic plate waves

Claire Davis, Nik Rajic, Cedric Rosalie

Proc. SPIE. 7004, 19th International Conference on Optical Fibre Sensors

KEYWORDS: Actuators, Optical design, Fiber Bragg gratings, Sensors, Wave plates, Numerical modeling, Vibrometry, Velocity measurements, Acoustics, Signal detection

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Proceedings Article | 8 April 2008 Paper

An optical fibre sensor for acoustic wave mode decomposition

N. Rajic, C. Davis, C. Rosalie

Proc. SPIE. 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008

KEYWORDS: Optical fibers, Fiber Bragg gratings, Sensors, Metals, Diagnostics, Wave plates, Structural health monitoring, Wave sensors, Velocity measurements, Acoustics

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Proceedings Article | 10 April 2007 Paper

Composite scarf repair monitoring using fiber Bragg grating sensors

Henry Li, Israel Herszberg, Claire Davis, Paul Stoddart

Proc. SPIE. 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007

KEYWORDS: Photodetectors, Aerospace engineering, Fiber optics, Fiber Bragg gratings, Sensors, Composites, Structural health monitoring, Finite element methods, Adhesives, Active sensors

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Proceedings Article | 11 April 2006 Paper

Health monitoring of bonded composite repairs using fibre optic sensors

Henry Li, Olivier Dupouy, Israel Herszberg, Paul Stoddart, Claire Davis, Adrian Mouritz

Proc. SPIE. 6174, Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems

KEYWORDS: Aerospace engineering, Modulation, Fiber optics, Fiber Bragg gratings, Reflection, Sensors, Composites, Fiber optics sensors, Structural health monitoring, Finite element methods

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Proceedings Article | 13 November 2002 Paper

Finite element modeling to determine thermal residual strain distribution of bonded composite repairs for structural health monitoring design

Wayne Baker, Rhys Jones, Claire Davis, Stephen Galea

Proc. SPIE. 4934, Smart Materials II

KEYWORDS: Optical fibers, Fiber Bragg gratings, Reflection, Sensors, Composites, Structural health monitoring, Finite element methods, Aluminum, Boron, Structural design

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The economic implication of fleet upgrades, particularly in Australia with military aircraft such as the F-111 and F/A-18, has led to an increasing reliance on composite repair technology to address fatigue and corrosion-affected aircraft components. The increasing use of such repairs has led to a research effort to develop various in-situ health monitoring systems that may be incorporated with a repair. This paper reports on the development of a theoretical methodology that uses finite element analysis (FEA) to model the strain profiles which optical sensors, on or within the patch, will be exposed to under various operational scenarios, including load and disbond. Numerical techniques are then used to predict the fibre Bragg grating (FBG) reflections which occur with these strain profiles. The quality of these reflection are a key consideration when designing FBG based structural health monitoring (SHM) systems. This information can be used to optimise the location of both surface mounted, and embedded sensors, and determine feasibility of SHM system design. Research was conducted into the thermal residual strain (TRS) within the patch. A finite element study revealed the presence of significant thermal residual strain gradients along the surface of the tapered region of the patch. As Bragg gratings are particularly sensitive to strain gradients, (producing a result similar to a chirped grating) the strain gradient on the composite at potential sensor locations both under load, and in the event of disbond was considered. A sufficiently high gradient leads to an altered Bragg reflection. These spurious reflections need to be considered, and theoretically obtained reflections can provide information to allow for load scenarios where the Bragg shift is not a smooth, well defined peak. It can also be shown that embedded fibres offer a higher average thermal residual strain reading, while being subject to a much lower strain gradient. This particularly favors the optical disbond detection system that is being developed. While certification concerns exist with embedding sensors in repairs, this study shows that embedded optical fibre sensors may provide for a health monitoring system with enhanced reliability and sensitivity.

Proceedings Article | 13 November 2002 Paper

In-situ health monitoring of bonded composite repairs using a novel fiber Bragg grating sensing arrangement

Claire Davis, Wayne Baker, Scott Moss, Stephen Galea, Rhys Jones

Proc. SPIE. 4934, Smart Materials II

KEYWORDS: Optical fibers, Fiber optics, Fiber Bragg gratings, Reflection, Sensors, Composites, Corrosion, Optical testing, Aluminum, Active optics

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Proceedings Article | 1 September 2000 Paper

Dynamic measurements of a micropump using a fiber-optic-based interferometer

Claire Davis, David Booth, Erol Harvey, P. Cadusch, Alexander Mazzolini, S. Askraba

Proc. SPIE. 4075, Micro-Opto-Electro-Mechanical Systems

KEYWORDS: Microelectromechanical systems, Actuators, Fringe analysis, Modulation, Fiber optics, Interferometers, Interferometry, Phase shift keying, Fiber optics tests, Liquids

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Showing 5 of 17 publications

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