Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 39, Issue 8, Pages 1266-1281Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2007.11.014
Keywords
foam; impact bahaviour; computational modelling; microtomography
Funding
- European Synchrotron Radiation Facility
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A dynamic crash loading experiment is performed on polypropylene foam which is used in composite sandwich structures for safety applications. Several interrupted shocks are conducted, in between which, microtomographic acquisitions are made showing the change of the sample during its compression. These data can help construct and validate predictive models, although, because this material is multi-scale (constitutive beads at the mesoscopic scale are made of microscopic closed cells), image processing is required to extract useful quantitative measurements. Such processing is described here, so as to determine a representative volume for each bead of the sample, to associate values such as bead density to each bead and to each stage of the compression. This can help build a predictive model at the mesoscopic scale. (C) 2007 Elsevier Ltd. All rights reserved.
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