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dc.contributor.authorBOUMBIMBA, Rodrigue Matadi
dc.contributor.authorFROUSTEY, Catherine
dc.contributor.authorLEONARDI, Frédéric
dc.contributor.authorGERARD, Pierre
dc.contributor.authorINOUBLI, Raja
dc.contributor.author
 hal.structure.identifier
VIOT, Philippe
164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.date.accessioned2014
dc.date.available2014
dc.date.issued2013
dc.date.submitted2014
dc.identifier.urihttp://hdl.handle.net/10985/8627
dc.description.abstractEpoxy resins are widely used in the design of fibre composite materials. This increasing use finds its reason in the fact that these materials have excellent mechanical and thermal properties. Playing on its chemical composition and curing speed, it’s possible to vary the mechanical properties from the extreme flexibility to high rigidity. However, the inherent toughness of a highly crosslinked epoxy is relatively low. It therefore seems desirable for high impact resistance applications, to improve the toughness, without affecting the other usual properties of this polymer. Recent studies have shown a significant improvement in impact resistance of epoxy in the presence of block copolymers. Our work aims to investigate the effect of triblock copolymer-based acrylate (Nanostrength) on the impact resistance of glass / epoxy composite. An experimental device, called "drop tower" is used to perform impact tests on composites with or without Nanostrength. Dynamic mechanical analyses (DMA) were conducted, first to characterize the effect of addition of Nanostrength on the thermomechanical properties, but also to establish a correlation between thermomechanical properties and impact resistance. Different observation tools, such as optical observation, scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to visualize the material damages. Adding Nanostrength in epoxy leads to the improvement of impact resistance of the composite material. A slight decrease in the storage modulus and glass transition temperature have been observed. Microscopic observations shown that the different failure modes of the composite are mainly delamination, fibres breakage and matrix cracking. It was also observed that the presence of Nanostrength role as cracks deflect.
dc.rightsPost-print
dc.subjectEpolam2020
dc.subjectM52N (Nanostrength)
dc.subjectFibres de verre
dc.subjectImpact
dc.subjectTour de chute
dc.titleComportement à l'impact des composites fibres de verre/Epoxy modifié copolymère à bloc.
dc.typdocCommunication avec acte
dc.localisationCentre de Bordeaux-Talence
dc.subject.halSciences de l'ingénieur: Mécanique: Matériaux et structures en mécanique
dc.subject.halSciences de l'ingénieur: Mécanique: Mécanique des matériaux
ensam.audienceInternationale
ensam.conference.titleCongrès français de mécanique (26;2013;Bordeaux (Gironde)).
ensam.conference.date2013-08-26
ensam.countryFrance
ensam.title.proceedingCongrès français de mécanique (26;2013;Bordeaux ).
ensam.page1-6
hal.identifierhal-01069040
hal.version1
hal.statusaccept


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