Residual strength of GRP laminates with multiple randomly distributed fragment impacts
2014 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, Vol. 60, 66-74 p.Article in journal (Refereed) Published
The residual tensile strength of glass fibre reinforced composites with randomly distributed holes and fragment impact damages have been investigated. Experiments have been performed on large scale panels and small scale specimens. A finite element model has been developed to predict the strength of multi-axial panels with randomly distributed holes. Further, an effective analytical model has been developed using percolation theory. The model gives an estimation of the residual strength as function of removed surface area caused by the holes. It is found that if 8% of the area is removed, the residual strength is approximately 50% of the un-damaged strength.
Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 60, 66-74 p.
Laminates, Damage tolerance, Impact behaviour, Stress concentrations
Composite Science and Engineering
IdentifiersURN: urn:nbn:se:kth:diva-145079DOI: 10.1016/j.compositesa.2014.01.015ISI: 000334000100009ScopusID: 2-s2.0-84894596207OAI: oai:DiVA.org:kth-145079DiVA: diva2:716342
QC 201405092014-05-092014-05-082015-05-07Bibliographically approved