23.2.1-R15 PAPERMAKING BEHAVIOUR OF A MODIFIED FILLER OBTAINED BY LAYER-BY-LAYER TECHNIQUE

A.LOURENÇO (UNIVERSITY OF COIMBRA), J.GAMELAS, P.FERREIRA

The modification of PCC with alternated layers of sodium alginate and polyDadmac using a layer-by-layer procedure was performed. The new composites were used as fillers in papermaking, enhancing the strentgh properties when compared to handsheets produced with unmodified PCC.

23.2.1-R16 INVESTIGATION OF THE TWO BUCKLING

J.GILLIBERT (LABORATOIRE PRISME), C.TEPHANY, D.SOULAT, P.OUAGNE

During the forming,tow buckling was observed in specific zones of the shape. In order to avoid the deffect during the forming,it is necessary to identify precisely the mechanisms at the defect's origin.For this reason an experimental setup has been designed.

23.2.2-R15 BACTERIAL CELLULOSE/POLYHYDROXYALKANOATES COMPOSITES: OBTAINING, CHARACTERIZATION AND EVALUATION OF BIOCOMPATIBILITY

PO.STANESCU (POLITEHNICA UNIVERSITY OF BUCHAREST), C.ZAHARIA, B.GALATEANU, E.VASILE, A.CASARICA

The research study focuses on the preparation and characterization of composite materials based on bacterial cellulose and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) as biodegradable scaffolds for tissue engineering applications

23.2.2-R16 COMPARATIVE STATIC BUCKLING STUDY OF FML THIN-WALLED PROFILES

R.MANIA (LODZ UNIVERSITY OF TECHNOLOGY)

The comparative study of buckling and postbuckling behaviour of open-cross section FML profiles is presented. The analytical approach is based on the general Koiter’s asymptotic theory whereas the numerical analysis is performed with application of the FEM and ANSYS package.

23.2.3-R15 INVESTIGATING THE MORPHOLOGY AND MECHANICAL PROPERTIES OF BIODEGRADABLE NANOCOMPOSITES BASED ON CELLULOSE DIACETATAE COMPOSITES AND CELLULOSE ACETATE BUTYRATE

M.ALIAKBAR NIA (ISLAMIC AZAD UNIVERSITY), MM.JALILI, S.TABASHI

The comparison effects of CAB content and SiO2 surface modification on mechanical properties and morphology were investigated. Morphology studies show that the modified silica nanoparticles could be easily dispersed in CA matrix having particle sizes less than 100 nm.

23.2.3-R16 A RESEARCH ON NONLINEAR STABILITY AND FAILURE OF THIN-WALLED COMPOSITE COLUMNS WITH OPEN CROSS-SECTION

H.DĘBSKI (LUBLIN UNIVERSITY OF TECHNOLOGY), J.BIENIAŚ, P.JAKUBCZAK

The paper present a numerical and experimental analysis of post-critical state of a thin-walled beam under axial compression. The beam was made of carbon-epoxy composite. The research was lead in post-buckling and limit states, as well.

23.2.4-R15 SIMULATION AND CONTROL OF THE VACUUM ASSISTED RESIN TRANSFER MOULDING PROCESS BY MEANS OF FLEXIBLE PERMEABILITY MODELS

E.DÍAZ (AIMPLAS), C.SANZ, JA.GARCÍA

The main objective of the present work is the development of an original and innovative approach for the optimal design of the vacuum assisted resin transfer moulding processes as a suitable technology for composites manufacturing based on resin flow simulation.

23.2.4-R16 INFLUENCE OF FABRIC WEAVE PATTERN ON BUCKLING BEHAVIOR OF FABRIC REINFORCED COMPOSITE PLATES WITH THROUGH THE WIDTH DELAMINATION

E.AMINI (AMIRKABIR UNIVERSITY OF TECHNOLOGY (TEHRAN POLYTECHNIC)), AA.JEDDI, HR.OVESY, H.DABIRYAN

The compressive buckling behavior of E-glass/epoxy composite laminates with through the width delamination is investigated. Glass fabrics with two most basic weave patterns were used as reinforcement of composites. Compression tests were carried out to compare the critical buckling loads.

23.2.5-R15 EFFECT OF CNT CONCENTRATION ON MECHANICAL PROPERTIES OF COMPOSITES MANUFACTURED BY COMPRESSION RESIN TRANSFER MOLDING (CRTM)

D.ABLIZ (CLAUSTHAL UNIVERSITY OF TECHNOLOGY), G.ZIEGMANN, YG.DUAN, D.LI, D.MEINERS

CNT / epoxy / fiber hybrid composites were fabricated by the CRTM process; in-plane and through-thickness filtering effects were investigated; flexural properties of the hybrid composites were tested and analyzed. Results show that there is an optimum CNT concentration to achieve maximum mechanical properties.

23.2.5-R16 POLYMER MATRIX COMPOSITES WITH CARBON NANOTUBES AS ABSORBING AND SHIELDING MATERIALS FOR MICROWAVE AND TERAHERTZ RANGES

V.BOVTUN (INSTITUTE OF PHYSICS ASCR, PRAGUE), M.KEMPA, D.NUZHNYY, M.SAVINOV, J.PETZELT

Analysis of shielding and absorption efficiency of composites of poly(ethylene terephthalate) and multiwalled carbon nanotubes was perfomed on the base of dielectric and ac conductivity spectra studied in a very broad frequency range from 0.1 mHz to 1 THz.

23.2.6-R15 LIQUID COMPOSITE MOULDING - ENABLER FOR THE AUTOMATED PRODUCTION OF CFRP AIRCRAFT COMPONENTS

L.WINKELMANN (AIRBUS OPERATIONS GMBH), YC.ROTH, M.WEINHOLDT

Airbus mission is to meet the needs of airlines by producing the most modern 100+ passenger aircraft. One well-proven approach for the realisation of high-performance light-weight structures is the application of carbon fibre-reinforced plastics.

23.2.6-R16 THE EFFECTIVE PROPERTIES AND DEBONDING EFFECT OF CARBONNANOTUBE-REINFORCED COMPOSITES

J.NAFAR DASTGERDI (AALTO UNIVERSITY), G.MARQUIS

23.2.7-R15 FABRICATION OF FIBER ORIENTATION ON COMPOSITES WITH HIGH DISCONTINUOUS CARBON FIBER CONTENTS

D.SHIMAMOTO (NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (AIST)), Y.IMAI, Y.HOTTA

We studied the fabrication of fiber orientation in CFRP composed of epoxy and discontinuous carbon fibers at high loading. Mechanical properties of CFRP were significantly improved by the orientation and adjustment of placement of discontinuous carbon fibers.

23.2.7-R16 MODELING THE FAILURE STRENGTH OF DEBONDED COMPOSITE SANDWICH STRUCTURE

JL.TSAI (NATIONAL CHIAO TUNG UNIVERSITY), YH.NIEH, YK.LAI

The research aims to investigate the failure behaviors of the composite sandwich structures with debond defect subjected to compression loading. The compressive strength is characterized using either the maximum principal strain criterion or the damage zone method.

23.2.8-R15 TRADE-OFF ANALYSIS FOR DIFFERENT RTM PRODUCED LEADING EDGES CONFIGURATIONS

R.ARRANZ (ACITURRI), A.DE BENITO, S.DÍEZ, JA.PLAZA, E.PORRAS et al.

The demand for sustainable and more efficient production technologies has led to identify injection processes as a promising alternative for aeronautical composite components manufacturing. Within this framework, ACITURRI has performed trade-off studies for different configurations of aerodynamic surface leading edges.

23.2.8-R16 COMPOSITE POLYMERIC MATRIX MODIFIED WITH MICROWAVED TREATED MULTI WALLED CARBON NANOTUBES

GW.LEBRAO (INSTITUTO MAUA DE TECNOLOGIA), B.BONALUME, B.RENART, G.MARIANA, R.NICOLA et al.

The stability of carbon nanotubes discourages their use as reinforcement for polymer composites. Howevwer, nanocomposite phenol epoxy once oxidizing with microwave and functionalizated with coupling agent shows improvement in mechanical properties such as flexural strength and impact resistance.