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Conference paper

Fracture Mechanics Analysis of Composites with Ply-Drops - Measurement of Delamination Fatigue Crack Growth Rate

By Goutianos, Stergios1,2; Sørensen, Bent F.1,2

From

Department of Wind Energy, Technical University of Denmark1

Composites Mechanics and Materials Mechanics, Department of Wind Energy, Technical University of Denmark2

Ply-drops must be taken into account in the design of composite structures due to the initiation and propagation of delaminations at ply-drop locations. This damage mode is experimentally investigated in tension-tension fatigue and the fatigue delamination growth rate is measured for two (external and internal) ply-drop geometries.

It is found that the fatigue delaminations grow at a constant rate. Fracture mechanics, using the finite element method, is used to analyse the ply-drops. The influence of material and geometric parameters on the fracture energy release rate is investigated.

Language: English
Year: 2018
Proceedings: ECCM18 - 18th European Conference on Composite Materials
Types: Conference paper
ORCIDs: Sørensen, Bent F.

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