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Micro- and meso-level residual stresses in glass-fiber/vinyl-ester composites
2000 (English)In: Composites Science And Technology, ISSN 0266-3538, Vol. 60, no 10, 2011-2028 p.Article in journal (Refereed) Published
Abstract [en]

Residual stresses in glass-fiber composites were studied on the micro and meso scales by computational and experimental methods. Transmitted polarized light images of thin sections were compared with 3D finite-element solutions of a sample containing 1410 fibers. Calculated point-wise stresses were derived from a linear thermoelastic model with negligibly small numerical errors. Regions with calculated maximum compressive stresses showed good agreement with experimentally observed optical bands. A material with poor interfacial adhesion showed weaker optical effects indicating fiber/matrix debonding. On the basis of these results it stems likely that irreversible matrix deformation and debonding can take place in the curing phase.

Place, publisher, year, edition, pages
2000. Vol. 60, no 10, 2011-2028 p.
Keyword [en]
polymer-matrix composites, curing, interface, finite element analysis, residual stresses, polymer-matrix composites, h-p version, curing stresses, mechanics, fracture, state
URN: urn:nbn:se:kth:diva-19985ISI: 000088890800012OAI: diva2:338678
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Berglund, Lars A.
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