6533b7d7fe1ef96bd1267b62

RESEARCH PRODUCT

Impact behaviour of flax/epoxy composite plates

Shaoxiong LiangPapa-birame GningLaurent Guillaumat

subject

Materials scienceComposite numberDamage toleranceAerospace EngineeringOcean EngineeringBendingDamage mechanicsDamage mechanicsStructural compositesMécanique: Mécanique des matériaux [Sciences de l'ingénieur]Composite materialSafety Risk Reliability and QualityImpact behaviourCivil and Structural EngineeringMécanique [Sciences de l'ingénieur]Mechanical EngineeringEpoxyCompression (physics)Flax fibreResidual strengthTransverse planeMechanics of Materialsvisual_artAutomotive Engineeringvisual_art.visual_art_mediumDamage tolerance

description

This paper presents an experimental investigation of the impact behaviour of flax/epoxy composite plates submitted to low-velocity transverse impact. Low energy drop-weight impact tests have been performed on two types of quasi-isotropic flax/epoxy composites, rectangularly shaped with edges lengths of 142 mm × 94 mm and 2.85 mm thick. Residual properties have been assessed by compression after impact tests. A detailed description of damage development, especially the increase of the rear face crack with respect to the impact energy is given by the microscopic observation. The influence of impact damage on the residual strength is described. A loss of 15%–30% in compression resistance was noticed for specimens impacted by 10 J. Dynamic effects appeared negligible and a good concordance was found between quasi-static three points bending and low energy impact loadings. Authors thank Angers Loire et Métropole for financing this research. M. Jean-Luc Barou from I2M laboratory is kindly acknowledged for his technical support

yearjournalcountryeditionlanguage
2015-06-01International Journal of Impact Engineering
https://doi.org/10.1016/j.ijimpeng.2015.01.006