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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/5642

    Título
    Strain-rate-dependent properties of short carbon fiber-reinforced acrylonitrile-butadiene-styrene using material extrusion additive manufacturing
    Autor
    Verbeeten, Wilco M.H.Autoridad UBU Orcid
    Lorenzo Bañuelos, MiriamAutoridad UBU Orcid
    Saiz Ortiz, Rubén
    González, Rodrigo
    Publicado en
    Rapid Prototyping Journal. 2020, V. 26, n. 10. p. 1701–1712
    Editorial
    Emerald
    Fecha de publicación
    2020
    ISSN
    1355-2546
    DOI
    10.1108/RPJ-12-2019-0317
    Abstract
    Purpose – The purpose of the present paper is to quantify and analyze the strain-rate dependence of the yield stress for both unfilled acrylonitrilebutadiene- styrene (ABS) and short carbon fiber-reinforced ABS (CF-ABS) materials, fabricated via material extrusion additive manufacturing (MEAM). Two distinct and opposite infill orientation angles were used to attain anisotropy effects. Design/methodology/approach – Tensile test samples were printed with two different infill orientation angles. Uniaxial tensile tests were performed at five different constant linear strain rates. Apparent densities were measured to compensate for the voided structure. Scanning electron microscope fractography images were analyzed. An Eyring-type flow rule was evaluated for predicting the strain-rate-dependent yield stress. Findings – Anisotropy was detected not only for the yield stresses but also for its strain-rate dependence. The short carbon fiber-filled material exhibited higher anisotropy than neat ABS material using the same ME-AM processing parameters. It seems that fiber and molecular orientation influence the strain-rate dependence. The Eyring-type flow rule can adequately describe the yield kinetics of ME-AM components, showing thermorheologically simple behavior. Originality/value – A polymer’s viscoelastic behavior is paramount to be able to predict a component’s ultimate failure behavior. The results in this manuscript are important initial findings that can help to further develop predictive numerical tools for ME-AM technology. This is especially relevant because of the inherent anisotropy that ME-AM polymer components show. Furthermore, short carbon fiber-filled ABS enhanced anisotropy effects during ME-AM, which have not been measured previously.
    Palabras clave
    ABS material
    Anisotropic strain-rate-dependent yield stress
    Eyring rate equation
    Fused filament fabrication (FFF)
    Infill orientation
    Polymer matrix composites (PMC)
    Apparent density
    Materia
    Resistencia de materiales
    Strength of materials
    URI
    http://hdl.handle.net/10259/5642
    Versión del editor
    http://dx.doi.org/10.1108/RPJ-12-2019-0317
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