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Tension, compression and shear fatigue of a closed cell foam
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-9744-4550
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-1187-4796
2007 (English)In: 16th International Conference on Composite Materials, ICCM-16, 2007Conference paper, Published paper (Refereed)
Abstract [en]

A closed cell foam of Polymetacrylimide (Rohacell) with three different densities is studied. The foam is tested quasistatically in tension, compression and shear. The tensile properties scale very well with the relative density of the foam, but the compression and shear properties do not. It is believed to be due to cell edge and cell wall buckling being the dominated deformation mechanism in compression and shear for lower densities that does not occur for higher densities. Fatigue testing is then performed in tension, compression and shear. It is seen that for all load cases and densities, the fatigue life can be plotted using Basquin's law. The results also show that the different failure mechanisms found in the static tests are the same in fatigue. This means that the fatigue life for different load types exhibit different failure mechanisms. This shows not only as a clear difference in the stress levels for fatigue failure, but also on the slope in the fatigue life relation.

Place, publisher, year, edition, pages
2007.
Keyword [en]
Cellular materials, Crack propagation, Fatigue, Foam
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-154903Scopus ID: 2-s2.0-79960056851ISBN: 978-493113605-2 (print)OAI: oai:DiVA.org:kth-154903DiVA: diva2:760295
Conference
16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace", 8 July 2007 through 13 July 2007, Kyoto, Japan
Note

QC 20141103

Available from: 2014-11-03 Created: 2014-10-29 Last updated: 2015-05-18Bibliographically approved

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Zenkert, DanBurman, Magnus

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  • apa
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