Buckling and propagation of a delaminated composite beam in bending
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Delamination is considered one of the most critical damage modes in composite materials. It has been studied extensively for in-plane compression of composite structures. Delamination in composite beams under pure bending is presented here. Experiments have been performed to determine the critical moment when the delamination buckles open (snap-buckling) and the moment at which propagation of the delamination occurs. A mathematical model has been adapted to predict the snap-buckling moment level and the bifurcation behavior. Mixed mode analysis has been applied to calculate the moment for delamination propagation. The snap-buckling and propagation moment levels were successfully predicted. Fatigue tests were performed to check the influence of the snap-buckling mode on the threshold moment for propagation.
|Item Type||Conference or Workshop Items (UNSPECIFIED)|
|Creators||Kinawy, M., Butler, R. and Hunt, G. W.|
|Departments||Faculty of Engineering & Design > Mechanical Engineering|
|Research Centres||Aerospace Engineering Research Centre|
|Additional Information||Paper number: 2010-2771|
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