24.2.1-R15 STATISTICAL MODELLING OF ARBITRARY FLAX FIBRE SHAPES FROM 2D IMAGES USING RANDOMIZED FOURIER EXPANSION

C.MATTRAND (CLERMONT UNIVERSITÉ, IFMA, INSTITUT PASCAL, UMR 6602 UBP/CNRS/IFMA), A.BÉAKOU, K.CHARLET

This paper focuses on modeling the scatter observed in flax fiber morphology. The proposed approach is based on a randomized version of the Fourier expansion of the radial distance of each point of the fiber boundary from its centroid.

24.2.1-R16 DETECTION AND LOCALIZATION OF LOW-VELOCITY IMPACT DAMAGES OF COMPOSITE STRUCTURES BASED ON WAVELET ANALYSIS OF MODAL SHAPES

A.KATUNIN (SILESIAN UNIVERSITY OF TECHNOLOGY)

The proposed method is based on non-destructive measurements of modal shapes and their processing using spatial wavelet transform. The experiments were carried out on the composite plates with artificially inputted impact damages with various energies and geometric properties of impactors.

24.2.2-R15 EFFECTS OF SURFACE MODIFICATIONS ON THE MECHANICAL PROPERTIES OF FLAX/ΒETA-POLYPROPYLENE COMPOSITES

CM.WU (NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOG), CJ.WANG, JC.CHEN, KB.CHENG

Effects of surface treatment of flax fibers by using vinyltrimethoxy silane (VTMO) and maleic anhydride and maleic anhydride-Polypropylene (MAPP) on mechanical properties of flax/β-PP composites are investigated. Properties such as: tensile, flexural, impact and water uptake were studied.

24.2.2-R16 ND TESTING ADVANCES ON CFRP WITH ULTRASONIC AND THERMAL TECHNIQUES

A.CAROFALO (UNIVERSITY OF SALENTO), V.DATTOMA, F.PALANO, F.PANELLA

Purpose of the job is to perform measurements with ND control procedures on composite material with carbon/fibers and different thickness, containing artificial defects similar in shape, but with different typology.

24.2.3-R15 MECHANICAL PROPERTIES OF UNIDIRECTIONAL EPOXY MATRIX COMPOSITES REINFORCED WITH SCUTCHED FLAX AND TOW BY-PRODUCT

N.MARTIN (UNIV. BRETAGNE-SUD, EA 4250, LIMATB), P.DAVIES, C.BALEY

In this study, we have compared the properties of UD composite materials made of scutched flax and flax tows from the same batch.

24.2.3-R16 EXPERIMENTAL INVESTIGATIONS OF DEFECT SIZING IN COMPOSITE MATERIALS BY IR THERMOGRAPHY METHODS

W.SWIDERSKI (MILITARY INSTITUTE OF ARMAMENT TECHNOLOGY), M.SZUDROWICZ

Comparison of detection defect sizing in composite sample (CFRP and GFPR) after mechanical impact by IR thermography methods with -stimulation by means of the optical and ultrasonic as well as lock-in thermography method will be presented.

24.2.4-R15 DEVELOPMENT OF NATURAL FIBRE REINFORCED POLY(LACTIC ACID) BIOCOMPOSITES

S.HAJBA (BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS), T.TÁBI

In our work we have produced natural resource based biodegradable polymer composites from Poly(Lactic Acid)and plant fibres with film stacking technology. We have investigated the effect of the compression molding parameters on the fibre-matrix adhesion and on the mechanical properties.

24.2.4-R16 PASSIVE INFRARED THERMOGRAPHY FOR DAMAGE MONITORING DURING STRUCTURAL TESTING OF CFRP PARTS

B.RODRIGUEZ (CENTER FOR ADVANCED AEROSPACE TECHNOLOGIES - CATEC), C.GALLEGUILLOS, R.FERNÁNDEZ, F.LASAGNI

This work aims to use passive infrared thermography for the detection of damage evolution in CFRP parts during mechanical testing, together with image processing strategies. Heat release from fiber/matrix failure is recorded and analyzed for contrast enhancement.

24.2.5-R15 BIODEGRADABLE THERMOPLASTIC COMPOSITES BASED ON PHB AND NATURAL FIBRES

R.GONZÁLEZ (AIMPLAS), A.VERDÚ, ML.GIL

The mechanical properties of polyhydroxybutyrate (PHB) were improved through the addition of natural reinforcements such us mats and fabrics of natural fibres, leading to flexural modulus up to four times the original value with flax and kenaf mats.

24.2.5-R16 MECHANICAL PROPERTIES OF JUTE/PLA SANDWICH COMPOSITES WITH CORRUGATED BOARD AS A CORE LAYER

JC.CHEN (VANUNG UNIVERSITY), CM.WU, PY.HUANG, KB.CHENG, YA.TENG

Two composites (corrugated board reinforced PLA composites and jute fabric/PLA sandwich composites with the corrugated board as a core layer) were developed in the current study. Tensile, compressive, bending and IZOD impacting properties of the composites are discussed in detail.

24.2.6-R15 MECHANICAL BEHAVIOUR OF THE PP COMPOSITES REINFORCED WITH PALM FIBERS

L.REIS, AC.PEREIRA, D.MULINARI (UERJ)

In the work, mechanical properties of palm fibers/polypropylene (PP) composites were studied. These fibers were mixed with polymeric matrix (PP) and coupling agent (MAPP) in a thermokinetic mixer. Results showed addition MAPP in composites presented increase mechanical and thermal properties.

24.2.6-R16 EVALUATION OF PHYSICAL PROPERTIES AND FATIGUE DURABILITY OF RUBBER-CLAY NANOCOMPOSITES

CS.WOO (KOREA INSTITUTE OF MACHINERY & MATERIALS), H.PARK, DH.JOE

My research are mechanical properties and lifetime prediction for rubber material and components. Particular areas are stress-strain and failure properties, and the use of simulation software such as finite element analysis (FEA) to predict the related component characteristics and lifetime.

24.2.7-R15 EFFECTS OF MANUFACTURING PROCESS AND WATER AGEING ON THE MECHANICAL BEHAVIOUR OF TWO REINFORCED COMPOSITES: FLAX-FIBRES AND GLASS-FIBRES

EH.SAIDANE (UNIVERSITY OF REIMS CHAMPAGNE-ARDENNE, LISM EA 4695, IUT DE TROYES), D.SCIDA, M.ASSARAR, R.AYAD

This paper investigate the effects of manufacturing process and water ageing on the mechanical behaviour of FFRE and GFRE composites. The obtained results showed that the implementation technique that was considered significantly affects the tensile properties of both composites.

24.2.7-R16 MULTISCALE MODELLING NANO-PLATELET REINFORCED COMPOSITES AT LARGE STRAIN

D.STANIER (UNIVERSITY OF BRISTOL), J.CIAMBELLA

An incompressible particle-reinforced neo-hookean material is subjected to large strain deformation. The stiffness of the RVE is shown to depend strongly on the orientation of the anisotropic reinforcement at small and large strain.

24.2.8-R15 AN INVESTIGATION OF THE EFFECT OF THE MACHINING PROCESSES OF CIRCULAR HOLES PROCESSES ON THE MECHANICAL BEHAVIOUR OF FLAX FIBER REINFORCED POLYMER

I.EL SAWI (RYERSON UNIVERSITY), Z.FAWAZ, R.ZITOUNE, H.BOUGHERARA

We investigated the influence of the machining quality on the mechanical behavior of Flax Fiber Reinforced Polymer. An IR thermographic camera coupled with fatigue cyclic tests were performed to assess the temperature evolutions and the damage evolution in these plates.

24.2.8-R16 DEEP EXPERIMENTAL COMPARATIVE STUDY BETWEEN ACOUSTIC EMISSION METHOD AND HYDROSTATIC PROOF TEST OF COMPOSITE VESSELS

S.BITTENDIEBEL (INSTITUT DE SOUDURE), Y.SLAH, S.RAMADAN

The present work aims to give a deep comparison between the hydrostatic proof (HP) and the AET, and carry out, over experimental tests, the real benefits of the AET with respect to the HP.

24.2.9-R15 ENZYMATIC AND COLD PLASMATIC TREATMENT OF NATURAL MICROFIBRES FROM GRAIN BY-PRODUCTS USED AS A REINFORCEMENT OF EPOXY BIOCOMPOSITES

M.URBANIAK (WEST POMERANIAN UNIVERSITY OF TECHNOLOGY IN SZCZECIN, PIASTOW 19, 70-310 SZCZECIN, POLAND), AK.BLEDZKI

This work presents the thermal and mechanical behaviour of microfibre-reinforced bio-epoxies. Microfibres made from grain by-products was modified by enzyme and low temperature plasma treatments. The obtained results show an alternative for traditional composites in various technical applications.