23.3.1-R15 SINGLE-STEP HYDROTHERMAL SYNTHESIS OF REDUCED GRAPHENE OXIDE (RGO) AND FE2O3/RGO COMPOSITES FOR SUPERCAPACITOR APPLICATIONS

E.VERMISOGLOU (NCSR DEMOKRITOS), T.GIANNAKOPOULOU, M.GIANNOURI, N.BOUKOS, C.LEKAKOU et al.

Single-step hydrothermal synthesis of reduced graphene oxide (rGO) and Fe2O3/rGO composite is reported. This method allows both the reduction and exfoliation of graphite oxide. Electrochemical measurements revealed that these materials could be promising for energy storage applications.

23.3.1-R16 STATISTICAL PREDICTION OF TENSILE CREEP FAILURE TIME FOR UNIDIRECTIONAL CFRP

K.KASAHARA (KANAZAWA INSTITUTE OF TECHNOLOGY), T.OKUYA, M.NAKADA, Y.MIYANO

The statistical creep failure time under the tension loading along the longitudinal direction of unidirectional CFRP was predicted by using the statistical static tensile strengths of carbon mono filament and unidirectional CFRP and the viscoelasticity of matrix resin.

23.3.2-R15 A NEW DISPERSION METHOD OF GRAPHENE OXIDE FOR GRAPHENE REINFORCED NANOCOMPOSITES

KM.PARK (SEOUL NATIONAL UNIVERSITY), WR.YU

We report on a new dispersion method of GOs without their agglomerations. PAN molecules were used to wrap GOs. Then, Pw-GOs were reduced by a heat treatment. The various properties of composites were compared with those of previously prepared materials.

23.3.2-R16 USE OF ACOUSTIC EMISSION TECHNIQUE FOR IN-SERVICE EVALUATION OF THE MECHANICAL INTEGRITY OF EQUIPMENT GRP (GLASS REINFORCED PLASTIC)

A.FOULON (1LABORATOIRE ROBERVAL, UMR7337, UNIVERSITÉ DE TECHNOLOGIE DE COMPIÈGNE), A.LAKSIMI, C.LEMAITRE, J.FAVERGEON

Corrosion of glass fiber is thought to be responsible of breakage of tanks containing mineral acid. The consequences of glass fiber corrosion are cracks and failures. We have shown that acoustic emission is a relevant technique for detecting the corrosion.

23.3.3-R15 SULPHUR CROSS-LINKED GRAPHENE NANO PLATELETS AS STRUCTURAL COMPOSITE SUPERCAPACITOR ELECTRODES

R.REECE (UNIVERSITY OF SURREY), C.LEKAKOU, PA.SMITH

Graphene nano platelets cross-linked with elemental sulphur have been used as supercapacitor electrode material to provide successful energy storage in a structural device. Chemical crosslinking of the composite produces a mechanically stable material, with both high conductivity and surface area.

23.3.3-R16 EXPERIMENTAL AND NUMERICAL LIFE ESTIMATION METHODOLOGY OF FILAMENT WOUND GLASS/VINYLESTER COMPOSITE PIPES USED IN THE OIL AND GAS INDUSTRY

P.KELVERLKLOGLOU (ELEMENT MATERIALS TECHNOLOGY), A.TOULITSIS, S.GIANNIS, M.ROSEMAN, R.MARTIN et al.

There is no method for quantifying ageing effects following long term exposure to liquids. This work focuses on understanding how these factors affect the composite properties and establishes testing and numerical methodologies to predict the service life of a composite.

23.3.4-R15 MECHANICAL CHARACTERIZATION OF COMPOUNDED GRAPHITE NANOPLATELET THERMOPLASTIC COMPOSITES

R.GUZMAN DE VILLORIA (IMDEA MATERIALS INSTITUTE), LC.HERRERA, JP.FERNÁNDEZ-BLÁZQUEZ, P.CASTELL, A.FERNANDEZ

23.3.4-R16 STRESS–STRAIN ANALYSIS OF SPECIMENS SUBJECTED TO TENSILE LOADING DURING MOISTURE UPTAKE

A.ANISKEVICH (INSTITUTE OF POLYMER MECHANICS, UNIVERSITY OF LATVIA), A.MINTZAS, R.GUEDES

A numerical method for the calculation of the internal stress state that develops within structures subjected to mechanical and steady state or transient hygroscopic loading conditions, has been developed.

23.3.5-R15 EXCEPTIONAL ELECTRICAL CONDUCTIVITY AND FRACTURE RESISTANCE OF 3D INTERCONNECTED GRAPHENE FOAM/EPOXY COMPOSITES

J.JIA (THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY), XL.SUN, XL.LIN, X.SHEN, YW.MAI et al.

Graphene foam/epoxy composites are prepared using 3D interconnected GF grown on a Ni template by chemical vapor deposition. An exceptional electrical conductivity and excellent mechanical properties have been achieved, reflecting advantages of GF over traditional nanocarbon-fillers without issue of dispersion.

23.3.5-R16 MULTISCALE DAMAGE MODELLING WITH A “MORPHOLOGICAL APPROACH” TO HIGHLIGHT PARTICLE SIZE EFFECT IN HIGHLY-FILLED PARTICULATE COMPOSITES

M.TROMBINI (PPRIME INSTITUTE – CNRS – ENSMA – UNIVERSITY OF POITIERS UPR 3346), C.NADOT-MARTIN, D.HALM, G.CONTESSE, A.FANGET

A multiscale modeling specially adapted to highly-filled particulate composites is introduced: the Morphological Approach. Considering the constituents as linear elastic, numerical computations are performed on periodic cells, random monomodal and bimodal microstructures. Particle size effects and interaction effects are studied.

23.3.6-R15 NUMERICAL INVESTIGATION OF EFFECTIVE THERMO-MECHANICAL PROPERTIES IN SHORT FIBRE COMPOSITES

I.IOANNOU (UNIVERSITY OF SHEFFIELD), A.HODZIC, I.GITMAN

This paper aims to investigate the macroscopic influence of micro-mechanical parameters in short fiber thermoplastic composites.A study on the effect of RVE size was carried out and results from representative sizes were further compared with various analytical micro-mechanical models.

23.3.6-R16 MICRO-MECHANICAL MODELING OF FIBER PULL-OUT STRESSES IN AN AXISYMMETRIC COMPOSITE SYSTEM

H.ALHASHMI (INSTITUTE CENTER FOR ENERGY (IENERGY), MASDAR INSTITUTE OF SCIENCE AND TECHNOLOGY), S.KUMAR

Analytical model for the stress analysis of a three phase fiber-matrix composite system under thermo-mechanical loads. Adopting a stress function approach with appropriate boundary conditions and using variational method to express the stress fields then compared with computational results.

23.3.7-R15 MICROSTRUCTURAL AND ELASTIC PROPERTIES OF SHORT FIBER REINFORCED COMPOSITES

V.MÜLLER (KARLSRUHE INSTITUTE OF TECHNOLOGY), T.BÖHLKE

A short fiber reinforced composite is analyzed experimentally and homogenized using mean field approaches, which are based on microstructure data from CT measurements. It is shown, how the fiber orientation distribution function can be calculated without closure approximations.

23.3.7-R16 NUMERICAL ANALYSIS OF THE INFLUENCE OF A NEARBY FIBRE ON THE INTERFACE CRACK GROWTH UNDER TRANSVERSE TENSILE LOAD

C.SANDINO (UNIVERSITY OF SEVILLE), E.CORREA, F.PARÍS

Composite materials are particularly prone to transverse failure, which is originated by the appearance of interface cracks. In this work, the effect of the presence of a secondary fibre is analysed by means of the Boundary Element Method.

23.3.8-R15 INVESTIGATION ON SHORT CARBON FIBER FILLED COMPOSITES BASED ON POLYAMIDE BLEND PA6 AND PA6.6

I.RASHKOVAN (UVICOM CO.LTD), M.KAZAKOV, A.KRASNOV, O.KULACHINSKAYA

Necessity of enhancement of application field of short carbon fiber filled polyamides has stimulated resource of polyamide blends as matrix.Mechanical and friction comparison tests allowed ascertaining a number of preferences of blend composites.

23.3.8-R16 DEVELOPMENT OF A MICROMECHANICAL MODEL IN INTERACTION WITH PARAMETERS RELATED TO THE MICROSTRUCTURE CARBON/EPOXY COMPOSITES

M.EL MOUSSAID (BORDEAUX UNIVERSITY), JC.WAHL, N.PERRY, C.BOIS

The choice of wound carbon epoxy composites was adopted for the design of storage tanks under high pressure. In this paper, the development of a micromechanical model in interaction with the microstructure parameters is presented

23.3.9-R15 STRESS-TRANSFER AT THE NANOSCALE IN SIMPLY-SUPPORTED AND EMBEDDED MONOLAYER GRAPHENE/ POLYMER SYSTEMS

G.ANAGNOSTOPOULOS (INSTITUTE OF CHEMICAL ENGINEERING AND HIGH TEMPERATURE CHEMICAL PROCESSES), G.TSOUKLERI, J.PARTHENIOS, I.POLYZOS, K.PAPAGELIS et al.

The load transfer mechanism in simply-supported and embedded graphene flakes on polymer substrates is investigated by using the 4-point bending approach in tandem with Raman spectroscopy. For each stain, a mapping (ω2D & ωG profiles) across specific lines is made.