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Model of the mechanical response of short flax fiber reinforced polymer matrix composites
Institute of Polymer Mechanics, University of Latvia, 23 Aizkraukles iela, Rīga LV-1006, Latvia.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-5210-4341
Institute of Polymer Mechanics, University of Latvia, 23 Aizkraukles iela, Rīga LV-1006, Latvia.
2011 (English)In: 11th International Conference on the Mechanical Behavior of Materials (ICM11) / [ed] Mario Guagliano; Laura Vergani, Elsevier, 2011, p. 2016-2021Conference paper, Published paper (Refereed)
Abstract [en]

Natural-fiber-reinforced short-fiber composites are finding more applications lately, therefore there is a need for estimation of the mechanical properties of such composites based on the properties of the constituents. The fibersthemselves also possess complicated internal structure, resulting in anisotropy of their properties. Taking into account the internal structure of bast fiber, we evaluate the elastic properties of a composite unit cell, consisting of a fiber ofaverage length and matrix according to the fiber volume fraction in the composite. The unit cell properties are used to estimate the stiffness of a misaligned short-fiber composite by means of orientation averaging. The results obtained are compared with the experimental stress-strain diagrams of short flax fiber/polypropylene matrix composite. Usually the mechanical response of short-fiber/polymer matrix composite is non-linear due to the inelastic matrixbehavior. Accounting for the non-linear deformation of the matrix in the unit cell by modeling it as an elastic-plastic material, we also estimate its non-linear response under uniaxial loading.

Place, publisher, year, edition, pages
Elsevier, 2011. p. 2016-2021
Series
Procedia Engineering ; 10
Keywords [en]
flax fiber, short-fiber composite, non-linear deformation
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-33090DOI: 10.1016/j.proeng.2011.04.334ISI: 000300451302008Scopus ID: 2-s2.0-80052921381Local ID: 7decb201-5c08-4500-92b4-47a6b6d5fcceOAI: oai:DiVA.org:ltu-33090DiVA, id: diva2:1006325
Conference
International Conference on the Mechanical Behavior of Materials : 05/06/2011 - 09/06/2011
Note

Validerad; 2011; 20111010 (ysko)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2022-10-12Bibliographically approved

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Joffe, Roberts

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