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The sources of inelastic behavior of glass fibre/vinylester non-crimp fabric [±45]s laminates
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-5210-4341
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
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
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-5669DOI: 10.1177/0731684411412644Local ID: 3d58de95-4572-4b92-af9e-f5ecc349f664OAI: oai:DiVA.org:ltu-5669DiVA, id: diva2:978543
Note
Validerad; 2011; 20111024 (joffe)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-01-16Bibliographically approved

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Giannadakis, KonstantinosMannberg, PeterJoffe, RobertsVarna, Janis

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