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The sources of inelastic behavior of Glass Fibre/Vinylester non-crimp fabric [±45]s laminates
Lulea University of Technology, Sweden.
RISE, Swerea, SICOMP. Lulea University of Technology, Sweden.
RISE, Swerea, SICOMP. Lulea University of Technology, Sweden.ORCID iD: 0000-0002-5210-4341
Lulea University of Technology, Sweden.
2011 (English)In: Journal of reinforced plastics and composites (Print), ISSN 0731-6844, E-ISSN 1530-7964, Vol. 30, no 12, p. 1015-1028Article in journal (Refereed) Published
Abstract [en]

The non-linear and time-dependent stress-strain response of NCF [±45]s laminates in tension is studied. Testing methodology is suggested to separate and quantify the effect of damage development, non-linear viscoelastic effects, and viscoplasticity on the inelastic response. This is achieved by decomposition of viscoelastic and viscoplastic response, both of them being affected by microdamage accumulated during the service life. Material model based on Schapery's work on viscoelasticity and Zapas viscoplastic function with added damage terms is presented and used. Simulation is performed and validated with constant stress rate tensile tests, identifying the non-linear viscoelasticity and viscoplasticity as the major sources of the non-linear response.

Place, publisher, year, edition, pages
2011. Vol. 30, no 12, p. 1015-1028
Keywords [en]
glass fibre composite, microdamage, viscoelasticity, viscoplasticity, Constant stress, Damage development, Glass fibre composites, Inelastic behavior, Inelastic response, Material models, Micro-damage, Non-crimp fabrics, Non-linear response, Non-linear viscoelasticity, Stress-strain response, Tensile tests, Testing methodology, Time-dependent, Viscoelastic effects, Viscoplastic, Viscoplastic response, Elasticity, Glass fibers, Plasticity, Tensile testing, Viscosity
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-41043DOI: 10.1177/0731684411412644Scopus ID: 2-s2.0-81755174001OAI: oai:DiVA.org:ri-41043DiVA, id: diva2:1376969
Available from: 2019-12-10 Created: 2019-12-10 Last updated: 2019-12-10Bibliographically approved

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