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Fatigue testing and buckling characteristics of impacted composite specimens
Swedish Defence Research Agency, Aeronautics Division, FFA, SE-172 90 Stockholm, Sweden.
Schön, J., Swedish Defence Research Agency, Aeronautics Division, FFA, SE-172 90 Stockholm, Sweden.
2002 (English)In: International Journal of Fatigue, ISSN 0142-1123, E-ISSN 1879-3452, Vol. 24, no 2-4, 263-272 p.Article in journal (Refereed) Published
Abstract [en]

Fatigue testing has been performed in constant amplitude tension-compression loading on impact damaged carbon fibre/epoxy composite laminates. Two layups were tested. The shape and the amplitude of the buckles were measured using an optical whole field measurement technique. The experimental conditions were chosen to be representative of damages in aircraft structures. The R-value was found to have a small influence on the fatigue life indicating that the compressive part of the load cycle has more importance than the tensile part, this because the compressive load caused local buckling around the damage zone. The buckling was inward on the impact side and outward on the backside with larger buckles on the backside. Also the backside buckles showed a larger growth. Fatigue lives were compared with an analytical model that was found to give conservative predictions. © 2002 Elsevier Science Ltd. All rights reserved.

Place, publisher, year, edition, pages
2002. Vol. 24, no 2-4, 263-272 p.
Keyword [en]
Composites, Compression loading, Life prediction, S-N curves
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-47121DOI: 10.1016/S0142-1123(01)00081-0OAI: oai:DiVA.org:liu-47121DiVA: diva2:268017
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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