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dc.contributor.authorRao, Prabhakar M.
dc.contributor.authorGurvich, Mark R.
dc.contributor.authorPalliyaguru, Upul R.
dc.contributor.authorSeneviratne, Waruna P.
dc.identifier.citationRao, Prabhakar M.; Gurvich, Mark R.; Palliyaguru, Upul R.; Seneviratne, Waruna P. 2019. Damage mechanisms in tapered composite structures under static and fatigue loading. 34th Technical Conference of the American Society for Composites, ASC 2019en_US
dc.descriptionClick on the DOI link to access the article (may not be free).en_US
dc.description.abstractIn this work an integrated computational/experimental approach was developed to validate the predictive capabilities of State-of-the-Art (SoA) Progressive Damage Analysis (PDA) methods and tools. Specifically, a tapered composite structure incorporating ply-drops typical in the aerospace industry to spatially vary structural thickness was tested under static tension and cyclic tension fatigue loads. The data acquired from these tests included quantitative metrics such as pre-peak stiffness, peak load, location of delamination damage onset, and growth of delaminations as functions of applied static and fatigue loads. It was shown that the PDA tools were able to predict the pre-peak stiffness and peak load within ±10% of experimental average, thereby meeting and exceeding the pre-defined success criteria. Additionally, it was shown that the PDA tools were able to accurately predict the location of delamination onset and satisfactorily predict delamination growth under static tension loading. Overall, good correlations were achieved between modeling and experiments.en_US
dc.description.sponsorshipNational Aeronautics and Space Administration (NASA) under Award Nos. NNL09AA00A and 80LARC17C0004. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of NASA. Additional support received from the United Technologies Corporation (UTC) is gratefully acknowledged.en_US
dc.publisherDEStech Publicationsen_US
dc.relation.ispartofseries34th Technical Conference of the American Society for Composites, ASC;2019
dc.subjectAerospace industryen_US
dc.subjectStructure (composition)en_US
dc.titleDamage mechanisms in tapered composite structures under static and fatigue loadingen_US
dc.typeConference paperen_US
dc.rights.holder© 2019 by DEStech Publications, Inc. and American Society for Composites. All rights reserveden_US

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