25.1.1-R15 POST-BUCKLING ANALYSIS OF PIEZO-COMPOSITE LAMINATE WITH THROUGH-THE-WIDTH DELAMINATION BASED ON LAYERWISE THEORY

N.CHITSAZ (AMIRKABIR UNIVERSITY OF TECHNOLOGY), HR.OVESY, M.MKARAZI

In this paper, Post-buckling analysis of delaminated piezo-composite plate is performed. The analytical method is based on layer-wise theory which is able to consider zigzag displacement field through the thickness. Results are in good agreement with FEM results.

25.1.1-R16 SCANNING ELECTRON MICROSCOPY ANALYSIS OF ELASTOMERIC O-RINGS AND SPRING SEALS FRACTURED DURING RAPID GAS DECOMPRESSION

T.MBWADZAWO (UNIVERSITY OF SHEFFIELD), A.HODZIC

A Scanning electron microscopy analysis of Fluorocarbon elastomer O-rings and Hydrogenated Nitrile Butadiene Spring seals fractured during rapid gas decompression. A condition during which applied system pressure is quickly released, resulting in the expansion of absorbed gasses damaging elastomeric seals.

25.1.2-R15 TEMPERATURE SENSING POTENTIAL OF SHEAR ORIENTED POLYMER COMPOSITES

S.FRACKOWIAK (WROCLAW UNIVERSITY OF TECHNOLOGY), M.KOZLOWSKI

In this paper properties of a composite based on the matrix composed of low density polyethylene blend with polycarbonate and carbon black have been presented. The composite was extruded and to a cold orientation. Mechanical and electrical properties were evaluated.

25.1.2-R16 INFLUENCE OF THE TEMPERATURE IN THE DELAMINATION UNDER MODE I OF FRACTURE AND DYNAMIC LOADING OF TWO CARBON-EPOXY COMPOSITES.

A.ARGÜELLES (UNIVERSITY OF OVIEDO), J.VIÑA, AF.CANTELI, P.CORONADO, V.MOLLÓN

In this work has been studied, experimentally, the influence of the temperature in the delamination process, in dynamic regime, of two composites using the analysis of their fracture behavior under mode I of fatigue loading

25.1.3-R15 BROADBAND DIELECTRIC SPECTROSCOPY OF VARIOUSLY CONDUCTING POLYANILINE PELLETS

D.NUZHNYY (INSTITUTE OF PHYSICS, ACADEMY OF SCIENCES OF THE CZECH REPUBLIC), J.PETZELT, M.SAVINOV, V.BOVTUN, E.TOMSIK et al.

Three types of variously conducting polyaniline pellets (conducting, non-conducting, semi-conducting) were studied using various dielectric spectroscopic techniques from sub-Hz up to the infrared frequency range and from room temperature down to 10K. The results are discussed using effective medium models.

25.1.3-R16 ANALYSIS OF THE DYNAMIC FLEXURAL BEHAVIOUR OF SANDWICH BEAMS

I.IVAÑEZ (UNIVERSIDAD CARLOS III DE MADRID), E.BARBERO, S.SANCHEZ-SAEZ

The low-velocity impact response of composite sandwich beams was studied by developing a non-linear model. In order to determine the parameters which control the global impact response of the structure, the model has been formulated in terms of dimensionless groups.

25.1.4-R15 SIZE DEPENDENT ELECTRICAL PERCOLATION THRESHOLD AND ELECTRICAL TRANSPORT IN ONION-LIKE CARBON BASED COMPOSITES

J.MACUTKEVIC (VILNIUS UNIVERSITY), I.KRANAUSKAITE, J.BANYS, S.MOSEENKOV, V.KUZNETSOV et al.

Results of dielectric investigations of onion-like based composites in very wide frequency (20 Hz – 3 THz)are presented.

25.1.4-R16 THERMOMECHANICAL BEHAVIOUR OF COMPOSITE SANDWICH PANELS OF POLYMER/METAL UNDER LOW-VELOCITY IMPACT

M.RODRÍGUEZ, D.GRACÍA-GONZÁLEZ, A.AYNAT, Á.VAZ-ROMERO (UNIVERSITY CARLOS III OF MADRID), A.ARIAS

This work deals with the mechanical behavior under impact loading and different temperatures (from 15ºC to 100ºC) of the three-layered sandwich metal skins and polymer core (PEEK). Numerical model considers temperature sensitivity between transition temperature and melting temperature.

25.1.5-R15 EFFECTIVE DIELECTRIC RESPONSE OF THE PEROVSKITE POLYDOMAIN STRUCTURES.

A.KLIC (INSTITUTE OF PHYSICS ASCR), I.RYCHETSKY

25.1.5-R16 NUMERICAL MODELING OF DYNAMIC PUNCH OF HYBRID METAL COMPOSITE FOR PROSTHETIC INTERVERTEBRAL DISCS (IVD)

A.PIQUER (UNIVERSITY CARLOS III OF MADRID), D.GARCÍA, A.VAZ, M.RODRÍGUEZ, A.ARIAS

This work deals with the mechanical behavior under impact loading (from 5 m/s to 15 m/s) of the hybrid sandwich composed by titanium skins (Ti6Al4V and Ti6Al7Nb) and polymer core (polyether-ether-ketone, PEEK). These configurations are widely used in intervertebral prosthesis.

25.1.6-R15 FABRICATION AND CHARACTERIZATION OF ULTRA-LIGHTWEIGHT ABLATOR USING POROUS CARBON MATERIALS

S.SASAKI (TOKYO UNIVERSITY OF SCIENCE), M.ISHIKAWA, Y.KOGO, T.AOKI, T.OGASAWARA et al.

We have fabricated a light-weight ablator with excellent erosion resistance by using porous carbon materials. New porous carbon ablators were evaluated thermal insulation properties and erosion resistance by thermal conductivity measurement and arc-jet tests.

25.1.6-R16 MODAL PARAMETERS IDENTIFICATION OF COMPOSITE WING MODELS USING PIEZOELECTRIC MATERIAL

E.OLIVEIRA (INSTITUTO TECNOLÓGICO DE AERONÁUTICA), AG.MARTO, RG.ANNES DA SILVA

25.1.7-R15 AEROELASTIC STABILITY OF A COMPOSITE WING BOX WITH UNCERTAINTIES IN MATERIAL PROPERTIES

C.SCARTH (UNIVERSITY OF BRISTOL), J.COOPER, GH.SILVA

An efficient approach is presented for modelling the effects of uncertainty in modulus and ply orientation upon the aeroelastic stability of a composite wing box, using Polynomial Chaos Expansion coupled with sparse grid quadrature.

25.1.7-R16 HIGH IMPACT VELOCITY ON MULTI-LAYERED COMPOSITE OF POLYETHER ETHER KETONE AND ALUMINIUM

Á.VAZ-ROMERO, D.GARCÍA-GONZÁLEZ, A.AYNAT, M.RODRIGUEZ, A.ARIAS (UNIVERSITY CARLOS III OF MADRID)

This work presents an experimental and numerical investigation on the perforation behaviour of polymer/metal composite. Penetration tests have been conducted on sandwich panels of aluminum 2024-T3 skin and PEEK cores. It has been shown high efficiency perforation of PEEK materials.

25.1.8-R15 IMPACT OF GLASS TRANSITION TEMPERATURE OF UNSATURATED POLYESTER RESIN ON THE FINAL DOUBLE BONDS CONVERSION

D.DREYER (LABORATOIRE DE PHOTOCHIMIE ET D’INGÉNIERIE MACROMOLÉCULAIRES – UHA, MULHOUSE, FRANCE), S.BISTAC, C.DELAITE

Sheet Molding Compound (SMC) is a composite molded at 150°C and 70 bars. The SMCéCO project is a collaboration between laboratories and industrial partners for the development of SMC formulations to lower the molding conditions at 100°C and 5 bars.