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Characterization of viscoelasticity, viscoplasticity, and damage in composites
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-8050-2294
2019 (English)In: Creep and Fatigue in Polymer Matrix Composites / [ed] Rui Miranda Guedes, Elsevier, 2019, 2, p. 497-530Chapter in book (Refereed)
Abstract [en]

Empirical inelastic constitutive material models for composites and testing methodology for parameter determination in these models are analyzed. Short fiber as well as long unidirectional fiber reinforced composites are analyzed in situations when the main sources of inelastic behavior are a combination of (a) nonlinear viscoelasticity; (b) nonlinear viscoplasticity; and (c) microdamage-induced reduction of thermoelastic properties, all three evolving with time and stress. These phenomena are included in a common material model. The necessary tests for model identification are tensile quasistatic loading-unloading tests and creep tests at different stress levels with recorded strain recovery after load removal. The methodology is demonstrated presenting models for (a) shear in layers of [45/−45]s laminates; (b) response of short fiber composites (SMC with glass fiber bundles; composites with natural or man-made cellulosic fibers in bio-based resins).

Place, publisher, year, edition, pages
Elsevier, 2019, 2. p. 497-530
Series
Woodhead Publishing Series in Composites Science and Engineering
Keywords [en]
Fiber composites, Stiffness reduction, Viscoelasticity, Viscoplasticity, Creep
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-73438DOI: 10.1016/B978-0-08-102601-4.00016-3ISBN: 978-0-08-102601-4 (print)OAI: oai:DiVA.org:ltu-73438DiVA, id: diva2:1302563
Available from: 2019-04-05 Created: 2019-04-05 Last updated: 2019-04-05Bibliographically approved

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Varna, JanisPupure, Liva

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CiteExportLink to record
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  • apa
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