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Effects of CFRP laminate thickness on bending after impact strength
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-0630-2037
2009 (English)In: Plastics, rubber and composites, ISSN 1465-8011, E-ISSN 1743-2898, Vol. 38, no 2, p. 61-66Article in journal (Refereed) Published
Abstract [en]

This paper describes a series of experiments set out to explore the strength of bending loaded impacted monolithic composite panels with different thicknesses. Two laminate thicknesses are tested, both exposed to the same impact event in a drop tower with 35 J using a spherical tup with a radius of 8 mm. Accompanying tests in compression are performed and reported to allow evaluation of the full effects of bending. A limited fractographic analysis is also performed to study damage distribution after impact as well as after mechanical tests. It has been demonstrated that damage distribution through the thickness affects the bending properties of the laminate as the failure load was lower when the side with the largest delamination was loaded in compression. As expected it has also been demonstrated that the far field failure strain is higher at bending compared to compression loading.

Place, publisher, year, edition, pages
2009. Vol. 38, no 2, p. 61-66
Keywords [en]
Technology - Chemical engineering
Keywords [sv]
Teknikvetenskap - Kemiteknik
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-6634DOI: 10.1179/174328909X387801ISI: 000265404200004Scopus ID: 2-s2.0-67649160762Local ID: 4e0c7860-cabe-11dd-9935-000ea68e967bOAI: oai:DiVA.org:ltu-6634DiVA, id: diva2:979520
Note
Validerad; 2009; 20081215 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Asp, Leif

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