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Correlation between elastic properties and morphology in short fiber composites by X-ray computed micro-tomography

TitleCorrelation between elastic properties and morphology in short fiber composites by X-ray computed micro-tomography
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2021
AuthorsLionetto, F., Montagna F., Natali D., De Pascalis F., Nacucchi Michele, Caretto Flavio, and Maffezzoli A.
JournalComposites Part A: Applied Science and Manufacturing
Volume140
ISSN1359835X
KeywordsComposite morphology, Computerized tomography, Fiber reinforced plastics, Fibers, Length distributions, Mean intercept length, Morphology, Morphometric analysis, Morphometric method, Short fiber composites, Stars, Volume distributions, Volume orientation, X rays
Abstract

In this work the architectural anisotropy of short fiber reinforced polymers (SFRPs) has been characterized using X-ray computed micro-tomography (micro-CT) with four different morphometric methods: Mean Intercept Length (MIL), Volume Orientation (VO), Star Length Distribution (SLD) and Star Volume Distribution (SVD). The fabric tensor obtained from micro-CT analysis provided information on the fiber orientation, indicating that fibers were partially aligned in the injection direction. The fiber length and orientation obtained from optical microscopy and from the morphometric analysis in 3D, respectively, has been used to determine the mechanical properties of the composite sample, using a model based on micro and macromechanics. This approach leads to the prediction of the elastic constants of the component for any possible composite morphology resulting from injection, representing a key need for the design of SFRP components. © 2020

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85096127124&doi=10.1016%2fj.compositesa.2020.106169&partnerID=40&md5=4df3668f305d2f4dc9b14e348d6729a4
DOI10.1016/j.compositesa.2020.106169
Citation KeyLionetto2021