Tension, compression and shear fatigue of a closed cell polymer foam
2009 (English)In: Composites Science And Technology, ISSN 0266-3538, 785-792 p.Article in journal (Refereed) Published
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
Elsevier, 2009. 785-792 p.
Cellular materials, foam, fatigue, crack propagation
IdentifiersURN: urn:nbn:se:kth:diva-55979DOI: 10.1016/j.compscitech.2008.04.017ISI: 000265518200012ScopusID: 2-s2.0-62849099375OAI: oai:DiVA.org:kth-55979DiVA: diva2:472329
International Conference on Composite Materials 16
NOTICE: this is the author’s version of a work that was accepted for publication in International Conference on Composite Materials 16. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Conference on Composite Materials 16, 22 April 2008, DOI: 10.1016/j.compscitech.2008.04.017. Qc 201201182012-01-182012-01-032015-05-18Bibliographically approved