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Influence of ply-drop location on the fatigue behaviour of tapered composites laminates

Weiss, Ambrosius and Trabelsi, Walid and Michel, Laurent and Barrau, Jean-Jacques and Mahdi, Stephane Influence of ply-drop location on the fatigue behaviour of tapered composites laminates. (2010) In: 10th International Fatigue Congress, 06-11 June 2010, Prague, Czech Republik .

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Official URL: http://dx.doi.org/10.1016/j.proeng.2010.03.119

Abstract

The influence of ply-drop position in thickness direction under fatigue loading (R = -1) has been studied for a highly oriented composite laminate dropping from 20 to 12 plies. Compressive and tensile strengths have been determined for several configurations of ply-drop locations. Fatigue tests at a load ratio of R=-1 have been performed up to rupture. The first damages clearly identified are delaminations close to the drop-offs. Their initial locations and propagations kinetics before final failure were observed. Finite element simulations were performed to find out initiation spots of delamination. An interlaminar stress criterion has been proposed to predict initiation of delaminations. Effects of ply-drops configuration on fatigue are discussed.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://sciencedirect.com
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Airbus (FRANCE)
Université de Toulouse > Ecole des Mines d'Albi-Carmaux - EMAC
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Laboratory name:
Institut Clément Ader - ICA (Toulouse, France) - Matériaux et Structures Composites
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Deposited By: Laurent MICHEL

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