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dc.creatorR. M. Guedes
dc.creatorM. A Vaz
dc.creatorF. J. Ferreira
dc.creatorJ. L. Morais
dc.description.abstractThis work describes an experimental characterization: the non-linear rate-dependent mechanical behavior of a composite material under compression. Fiber reinforced polymer matrix composites exhibit non-linear mechanical behavior, except in fiber direction, which is rate-dependent. In this work the Texipreg (R) HS160 REM material system was used, comprising high strength carbon fiber and epoxy resin. Unidirectional laminates were tested under uniaxial compression tests on a universal testing machine. The stress/strain curves of several specimens were obtained at three different strain rates of 0.07, 0.001 and 0.0001/s. In all cases tests were continued until failure was reached to measure the strain rate effect on strength. A 3-parameter constitutive viscoplastic model /6,7/ was used to describe the mechanical behavior. This model was developed based on data for strain rate between 0.0001 and 0.07/s. In transverse direction the viscoplastic model was able to predict the high strain rate experiments conducted on a Split Hopkinson Pressure Bar.
dc.subjectEngenharia dos materiais
dc.subjectMaterials engineering
dc.titleResponse of CFRP laminates under high strain rate compression until failure
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoFaculdade de Engenharia
dc.subject.fosCiências da engenharia e tecnologias::Engenharia dos materiais
dc.subject.fosEngineering and technology::Materials engineering
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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