Buckling and propagation of a delaminated composite beam in bending

Moustafa Kinawy, Richard Butler, Giles W Hunt

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

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.
LanguageEnglish
Title of host publicationAIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2010: Collection of Technical Papers
PublisherAmerican Institute of Aeronautics and Astronautics
StatusPublished - 2010

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buckling
moments
composite materials
propagation
fatigue tests
composite structures
mathematical models
damage
thresholds

Cite this

Kinawy, M., Butler, R., & Hunt, G. W. (2010). Buckling and propagation of a delaminated composite beam in bending. In AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2010: Collection of Technical Papers American Institute of Aeronautics and Astronautics.

Buckling and propagation of a delaminated composite beam in bending. / Kinawy, Moustafa; Butler, Richard; Hunt, Giles W.

AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2010: Collection of Technical Papers. American Institute of Aeronautics and Astronautics, 2010.

Research output: Chapter in Book/Report/Conference proceedingChapter

Kinawy, M, Butler, R & Hunt, GW 2010, Buckling and propagation of a delaminated composite beam in bending. in AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2010: Collection of Technical Papers. American Institute of Aeronautics and Astronautics.
Kinawy M, Butler R, Hunt GW. Buckling and propagation of a delaminated composite beam in bending. In AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2010: Collection of Technical Papers. American Institute of Aeronautics and Astronautics. 2010.
Kinawy, Moustafa ; Butler, Richard ; Hunt, Giles W. / Buckling and propagation of a delaminated composite beam in bending. AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2010: Collection of Technical Papers. American Institute of Aeronautics and Astronautics, 2010.
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