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Time-dependent nonlinear behavior of recycled polypropylene in high tensile stress loading
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: 0000-0001-9649-8621
2011 (English)In: Journal of Thermoplastic Composite Materials, ISSN 0892-7057, E-ISSN 1530-7980, Vol. 24, no 5, p. 625-652Article in journal (Refereed) Published
Abstract [en]

Inelastic mechanical behavior in tension of a recycled polypropylene (rPP and a rPP with addition of 10% of maleic anhydride grafted polypropylene (rPP + MAPP) was characterized and compared. The time-dependent response was decomposed into nonlinear viscoelastic and viscoplastic parts and each of them quantified. It was found that the elastic properties did not degrade during loading. The addition of MAPP did not change the mechanical properties of the rPP. A nonlinear material model was developed and the involved parameters (stress-dependent functions) were identified. The model was then validated in a stress controlled test at a constant stress rate.

Place, publisher, year, edition, pages
2011. Vol. 24, no 5, p. 625-652
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-6312DOI: 10.1177/0892705711399737ISI: 000294403400004Scopus ID: 2-s2.0-80052340480Local ID: 4884607e-ff91-4592-88ca-4464c1a17d30OAI: oai:DiVA.org:ltu-6312DiVA, id: diva2:979189
Note
Validerad; 2011; 20110916 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Szpieg, MagdalenaGiannadakis, KonstantinosVarna, Janis

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