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Microdamage, viscoelasticity and viscoplasticity as main phenomena in thermal stress relaxation in laminated composites
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå tekniska univesitet.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Number of Authors: 3
2016 (English)In: Key Engineering Materials, ISSN 1013-9826, E-ISSN 1662-9795, Vol. 713, 99-102 p.Article in journal (Refereed) Published
Abstract [en]

Microdamage, viscoplastic and viscoelastic strain development in 90-layers of cross-ply laminates subjected to tensile loading is studied on unsymmetrical GF/EP laminates measuring the thermal curvature change. All three phenomena partially compensate for the effect of the thermal mismatch reducing the residual stress (specimen curvature). The viscoplastic strain contribution to curvature change is the largest whereas the effect of transient viscoelasticity is the smallest. Damage is included in the analysis through its effect on the effective transverse modulus of the 90- layer

Place, publisher, year, edition, pages
2016. Vol. 713, 99-102 p.
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-60124DOI: 10.4028/www.scientific.net/KEM.713.99ScopusID: 2-s2.0-84990216041OAI: oai:DiVA.org:ltu-60124DiVA: diva2:1044356
Conference
15th International Conference on Fracture and Damage Mechanics, FDM 2016,Alicante, Spain,14-16 September 2016
Available from: 2016-11-03 Created: 2016-11-03 Last updated: 2016-11-21

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Varna, JanisHajlane, Abdelghani
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