Abstract
Through-thickness stresses can cause initiation and propagation of interlaminar cracks, which may lead to a decrease of the structural integrity of a composite component. An example is cracks initiated at ply-drops in wind turbine blades, which can promote delamination under fatigue loading and thus significantly lower the loading capability of the loading structure. The importance of developing composite materials with high damage tolerance (high fracture resistance) will be first illustrated using specimens with multiple ply-drops tested in tension-tension fatigue. It will be shown that the delamination crack growth rate increases with the thickness of the structure, leading to increased crack growth rate as the delamination moves to the thicker section of the specimen. Thus, there is a need to apply techniques that can lead to stable crack growth or crack arrest.
| Original language | English |
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| Publication date | 2018 |
| Publication status | Published - 2018 |
| Event | Einladung zur Sitzung des Arbeitskreises Mikrostrukturmechanik im Fachausschuss Computersimulation der DGM - Bergischen Universität Wuppertal, Wuppertal, Germany Duration: 5 Dec 2018 → 5 Dec 2018 |
Workshop
| Workshop | Einladung zur Sitzung des Arbeitskreises Mikrostrukturmechanik im Fachausschuss Computersimulation der DGM |
|---|---|
| Location | Bergischen Universität Wuppertal |
| Country/Territory | Germany |
| City | Wuppertal |
| Period | 05/12/2018 → 05/12/2018 |