RT info:eu-repo/semantics/article
T1 Strain-rate-dependent properties of short carbon fiber-reinforced acrylonitrile-butadiene-styrene using material extrusion additive manufacturing
A1 Verbeeten, Wilco M.H.
A1 Lorenzo Bañuelos, Miriam
A1 Saiz Ortiz, Rubén
A1 González, Rodrigo
K1 ABS material
K1 Anisotropic strain-rate-dependent yield stress
K1 Eyring rate equation
K1 Fused filament fabrication (FFF)
K1 Infill orientation
K1 Polymer matrix composites (PMC)
K1 Apparent density
K1 Resistencia de materiales
K1 Strength of materials
AB 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 wereperformed at five different constant linear strain rates. Apparent densities were measured to compensate for the voided structure. Scanning electronmicroscope 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 materialexhibited higher anisotropy than neat ABS material using the same ME-AM processing parameters. It seems that fiber and molecular orientationinfluence the strain-rate dependence. The Eyring-type flow rule can adequately describe the yield kinetics of ME-AM components, showingthermorheologically 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 thismanuscript are important initial findings that can help to further develop predictive numerical tools for ME-AM technology. This is especiallyrelevant because of the inherent anisotropy that ME-AM polymer components show. Furthermore, short carbon fiber-filled ABS enhanced anisotropyeffects during ME-AM, which have not been measured previously.
PB Emerald
SN 1355-2546
YR 2020
FD 2020
LK http://hdl.handle.net/10259/5642
UL http://hdl.handle.net/10259/5642
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024