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Delamination criticality in slender compression-loaded composite panels
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-0630-2037
SICOMP AB, Swedish Institute of Composites.
2002 (English)In: Key Engineering Materials, ISSN 1013-9826, E-ISSN 1662-9795, Vol. 221-222, p. 3-16Article in journal (Refereed) Published
Abstract [en]

In this paper, a damage tolerance model based on the assumption of delamination criticality in compression loaded slender composite panels is outlined. In particular, the verification of the model by comparison between numerical predictions and experimental results is reviewed. Growth of shallow delaminations in slender panels is shown to be promoted by the global buckling of the panel. Consequently, care must be taken if structures with delaminations are to be allowed to buckle. In the paper, application of the model for aircraft design is briefly discussed. The overall predicted panel behaviour agrees with observations for test coupons. However, very small geometrical changes are shown to have tremendous effects on the predicted behaviour. Consequently, in structural design one must consider the sensitivity of geometrical conditions on the predicted behaviour. Therefore, reduction of the structural item into a design element is suggested. To generate conservative designs the suggested design element is to represent the worst case

Place, publisher, year, edition, pages
2002. Vol. 221-222, p. 3-16
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-7480DOI: 10.4028/www.scientific.net/KEM.221-222.3Local ID: 5e045bb0-0e87-11dc-b9dd-000ea68e967bOAI: oai:DiVA.org:ltu-7480DiVA, id: diva2:980370
Note
Validerad; 2002; Bibliografisk uppgift: Proceedings of the fifth Seminar on Experimental Techniques and Design in Composite Materials, Sep 1 2000, Cagliari, Italy; 20070530 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-06-14Bibliographically approved

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Asp, Leif

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