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Mechanical behaviour of SMC composites with toughening and low density additives
KTH, Superseded Departments, Fibre and Polymer Technology.ORCID iD: 0000-0001-5818-2378
2003 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 34, no 9, 875-885 p.Article in journal (Refereed) Published
Abstract [en]

A new type of SMC material (Flex-SMC) developed for automotive exterior body panels has been investigated. Flex-SMC contains hollow glass micro-spheres and thermoplastic toughening additives. A conventional SMC (Std-SMC) was used as a reference material. Materials were tested in monotonic tension and compression. Stiffness degradation with strain as well as fracture toughness was determined. In situ SEM was used to study failure mechanisms. Flex-SMC has a density almost 20% lower than Std-SMC and has higher impact resistance. The damage threshold strain of the Flex-SMCs is higher than for Std-SMC. Flex-SMCs have more than twice the fracture toughness of Std-SMC. The major reason identified is that Flex-SMCs shows extensive fibre pullout.

Place, publisher, year, edition, pages
2003. Vol. 34, no 9, 875-885 p.
Keyword [en]
moulding compound, mechanical properties, mechanical testing, short-fiber composites, bridging-law concepts, crack-growth, r-curves, damage, fracture
Identifiers
URN: urn:nbn:se:kth:diva-22753DOI: 10.1016/s1359-835x(03)00155-6ISI: 000184822200007OAI: oai:DiVA.org:kth-22753DiVA: diva2:341451
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Berglund, Lars A.

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