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Nonlinear creep behaviour of glass fiber reinforced polypropylene: Impact of aging on stiffness degradation
Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering, Milan, Italy;The Research Hub by Electrolux Professional, Pordenone, Italy.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. (Composite Centre Sweden)ORCID iD: 0000-0001-8050-2294
The Research Hub by Electrolux Professional, Pordenone, Italy.
The Research Hub by Electrolux Professional, Pordenone, Italy.
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2019 (English)In: Composites Part B: Engineering, ISSN 1359-8368, E-ISSN 1879-1069, Vol. 163, p. 702-709Article in journal (Refereed) Published
Abstract [en]

Nonlinear creep behavior of one commercial short glass fiber reinforced polypropylene was investigated using tensile creep tests and stiffness degradation measurements. The impact of thermal aging and following quenching was evaluated on the latter mechanical property. Experimental results were modeled applying nonlinear viscoelastic model used by Pupure et al. (2013) and developed by Lou and Schapery [1,2]. Results showed that this model can describe nonlinear behavior of short glass fiber reinforced polymer composites, where microdamage is given by debonding of fiber-matrix interfaces already at low strains, where cracks propagate and lead to tensile creep fracture.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 163, p. 702-709
Keywords [en]
Polymer-matrix composites (PMCs), Creep, Analytical modelling, Mechanical testing
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-72884DOI: 10.1016/j.compositesb.2019.01.052ISI: 000461262500069Scopus ID: 2-s2.0-85060028172OAI: oai:DiVA.org:ltu-72884DiVA, id: diva2:1288468
Note

Validerad;2019;Nivå 2;2019-02-13 (johcin)

Available from: 2019-02-13 Created: 2019-02-13 Last updated: 2019-04-12Bibliographically approved

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Pupure, LivaJoffe, Roberts

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