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Residual strength of GRP laminates with multiple randomly distributed fragment impacts
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
Swedish Defence Research Agency, Sweden.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.ORCID iD: 0000-0002-9744-4550
2014 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 60, 66-74 p.Article in journal (Refereed) Published
Abstract [en]

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.
Keyword [en]
Laminates, Damage tolerance, Impact behaviour, Stress concentrations
National Category
Composite Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-145079DOI: 10.1016/j.compositesa.2014.01.015ISI: 000334000100009Scopus ID: 2-s2.0-84894596207OAI: oai:DiVA.org:kth-145079DiVA: diva2:716342
Note

QC 20140509

Available from: 2014-05-09 Created: 2014-05-08 Last updated: 2017-12-05Bibliographically approved

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