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Papers by Janice Dulieu-Barton

One of the major inhibitors to the uptake of composites in new sectors is that regulations, codes... more One of the major inhibitors to the uptake of composites in new sectors is that regulations, codes and standards are often inappropriate for composites. This is because they are both explicitly and implicitly based on named materials, such as steel, and do not permit consideration of composites applications despite the strengths and benefits of the materials in many cases. This review provides important evidence supporting the primary aim of the RCS Working Group, as expressed in the 2016 CLF Composites Strategy, to work with regulators and standards bodies to adapt regulations to enable (greater) use of composites. Through this collaboration, the University of Southampton study helps CLF achieve the benefits that will arise from greater use of composites through, for example, increased durability and design flexibility, and lightweighting. A lack of appropriate codes and standards is recognised as a key barrier to the uptake of composite materials across many sectors. Composites UK ...

Studies in Conservation, 2005

Thermomechanics and Infra-Red Imaging, Volume 7, 2011

We demonstrate for the first time the reconfigurability of optical signals within advanced lamina... more We demonstrate for the first time the reconfigurability of optical signals within advanced laminated composite. The approach employs an ultra-thin planar optical circuit, embedded within glass fibre reinforced polymer (GFRP) that switches an optical input though Ohmic heating. This advance highlights new opportunities for optical reconfigurability within advanced composites, enabling data transmission redundancy and a consideration of branching optical fibre architectures.

Journal of Marine Engineering and Technology, 2014

Composite materials are increasingly used in structural applications within the marine industry. ... more Composite materials are increasingly used in structural applications within the marine industry. Due to the geometric complexity of marine structures, there is a practical requirement that they are assembled by joining smaller component pieces using either mechanical fasteners or adhesive bonding. in this paper Digital image Correlation (DiC) is used to provide full-field analysis of the complex strain fields generated within an adhesively bonded composite single lap joint. Tests are undertaken quasi-statically and at high rate, demonstrating a significant change in the assembly response between laboratory testing conditions and dynamic loading events typical of the marine environment. The work demonstrates the potential of applying full-field experimental technique to provide detailed analysis of complex structural problems, typical of large marine structures.

2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2021

Flexible and stretchable photonics is a rapidly evolving area, with various materials, design, pr... more Flexible and stretchable photonics is a rapidly evolving area, with various materials, design, processing, and device technologies being explored [1] . As with flexible electronics, flexible photonics particularly lends itself to integration upon engineered and natural structures, such as interfacing with the soft, curvilinear, and dynamic surfaces of living organisms. Here we explore a potential new growth opportunity interfacing with engineered structures, namely embedding into advanced composite materials (such as Carbon Fibre Reinforced Polymer and Glass Fibre Reinforced Polymer). The motivation being ultimately new optical functionality and intelligence for engineered structures (e.g. wind turbines, aircraft, civil infrastructure), going beyond what has been developed with embedded optical fibre through realising the full geometric diversity offered by flexible photonics. This work embeds ultra-thin glass [3] , utilising its flexibility in order to be conformal to the shape of composite structures which flex and in parts are non-planar. It is noted that cyclic olefin copolymer planar chips have recently shown feasibility in composite material [2] , whilst these demonstrations use rigid planar optics they do show feasibility for other flexible photonic materials to exploit this application.

Journal of Ship Production, 2006

A generic methodology is developed that enables vessel owners to apply a systematic procedure to ... more A generic methodology is developed that enables vessel owners to apply a systematic procedure to make decisions regarding damaged vessels. The methodology is based on the Royal National Lifeboat Institution's experience of composite vessels. It is demonstrated that the methodology is applicable to both composite and metallic structure through two illustrative examples. A detailed description of each part of the procedure is provided in the paper along with a justification of each step. It is intended that the procedure be made available through computer software; how this might be implemented is also described in the paper.

Mechanics of Materials, 2020

EPJ Web of Conferences, 2010

Composite Structures, 2015

Experimental Mechanics, 2015

Conference Proceedings of the Society for Experimental Mechanics Series, 2011

ABSTRACT

Experimental and Applied Mechanics, Volume 6, 2011

Thermoelastic stress analysis (TSA) has been applied to large scale honeycomb core sandwich struc... more Thermoelastic stress analysis (TSA) has been applied to large scale honeycomb core sandwich structure with carbon fibre face sheets. The sandwich panel was subjected to a pressure load using a custom designed test rig that could only achieve low cycle frequencies of 1 Hz. Two calibration approaches have been discussed and investigated to allow the use of the thermoelastic response

Experimental Analysis of Nano and Engineering Materials and Structures, 2007

Thermoelastic Stress Analysis (TSA) is a full-field technique for experimental stress analysis th... more Thermoelastic Stress Analysis (TSA) is a full-field technique for experimental stress analysis that has proved to be extremely effective for studying stress fields in the vicinity of crack-tips. An understanding of such fields is vital to the development of effective diagnosis and prognosis algorithms for Non-Destructive Testing (NDT) and Structural Health Monitoring (SHM). The key to crack-tip studies using TSA is the observation that the stress-sum contours (isopachics) in the vicinity of the tip take the form of a simple curve - the cardioid. This was exploited in [1] in order to estimate the Stress Intensity Factors (SIFs) for crack-tips in mode 1 and mixed-mode opening. The analysis [1] made use of the cardioid nature of the isopachics by deriving expressions for the SIFs in terms of the cardioid area and the positions of certain tangents to the curve.

Journal of Composite Materials, 2015

The influence of elevated temperatures on the bending response of polymer foam cored sandwich str... more The influence of elevated temperatures on the bending response of polymer foam cored sandwich structures is investigated. A new analytical model is proposed that enables the calculation of the stress/strain and deflection of sandwich beams subjected to load and elevated temperatures. The model is based on the classical sandwich beam theory, but the effect of a through thickness temperature gradient is accounted for by imposing different stiffnesses of the core for different temperatures. The sandwich beam specimen studied in the paper is loaded in a simply supported three-point bending configuration, where one of the face sheets is heated. The experimental approach utilises digital image correlation to obtain the point deflection of the specimen and more importantly to characterise the nonuniform deformation of the core. The results from the new analytical method agree well with corresponding experimental results for the beam deflection and core shear strain. It is found that the co...