Fractography and failure mechanisms in cfrp tubes submitted to burst testing
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2016
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BRAZILIAN MRS MEETING, 15th
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Resumo
The characterization of the failure mechanisms of CFRP components has been
expanded as its demand for structural members in several applications
increases.Composite tubular elements are used as biaxial structural components
in applications where high mechanical performance per unit weight is a vital
design requirement.In composite materials it is well known that the interface
between fiber and matrix or interphases in those regions influences the overall
composite properties.Crack propagation between plies (delamination) is the most
commonly observed damage in CFRP since the fracture energy for cracking
through the resin layer is lower than that for cracking through the
fibers.Composite materials are known to display complex failure modes, typically
involving multiple interacting damage processes, occurring over various
length-scales. Fiber breaks occur in the micrometer range, whereas
delaminations may occur over millimeter to meter scales, depending on the
structure´s size and geometry.In recent years, quantitative fractography has
become a method by which one can analyze the evolution of the interaction
between crack and microstructure.Fracture morphology reveals that the
dominant failure surface features were found to be fiber breakage, pull-out, and
matrix cleavage and hackle formation resulting from interfacial tensile or shear
failure.In the present work, specimens extracted from filament wound tubes
subjected to burst test at room temperature were examined by optical and
scanning electron microscopies in order to understand the failure mechanisms of
such tubes.
Como referenciar
LOBO, RAQUEL de M.; DIAS, ALDISON D.F.; MARINUCCI, GERSON; ANDRADE, ARNALDO H.P. de. Fractography and failure mechanisms in cfrp tubes submitted to burst testing. In: BRAZILIAN MRS MEETING, 15th, September 25-29, 2016, Campinas, SP. Abstract... São Carlos, SP: Aptor Software, 2016. p. 1938-1938. Disponível em: http://repositorio.ipen.br/handle/123456789/28063. Acesso em: 26 Mar 2025.
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