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Delamination criticality in slender compression-loaded composite panels
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0003-0630-2037
SICOMP AB, Swedish Institute of Composites.
2002 (Engelska)Ingår i: Key Engineering Materials, ISSN 1013-9826, E-ISSN 1662-9795, Vol. 221-222, s. 3-16Artikel i tidskrift (Refereegranskat) 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

Ort, förlag, år, upplaga, sidor
2002. Vol. 221-222, s. 3-16
Nationell ämneskategori
Kompositmaterial och -teknik
Forskningsämne
Polymera konstruktionsmaterial
Identifikatorer
URN: urn:nbn:se:ltu:diva-7480DOI: 10.4028/www.scientific.net/KEM.221-222.3Lokalt ID: 5e045bb0-0e87-11dc-b9dd-000ea68e967bOAI: oai:DiVA.org:ltu-7480DiVA, id: diva2:980370
Anmärkning
Validerad; 2002; Bibliografisk uppgift: Proceedings of the fifth Seminar on Experimental Techniques and Design in Composite Materials, Sep 1 2000, Cagliari, Italy; 20070530 (cira)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-06-14Bibliografiskt granskad

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