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Static and Dynamic Characterization of Cork Compounds for Sandwich Beam Cores

Title
Static and Dynamic Characterization of Cork Compounds for Sandwich Beam Cores
Type
Article in International Scientific Journal
Year
2010
Authors
R. A. S. Moreira
(Author)
Other
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F. J. Q. de Melo
(Author)
Other
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J. F. Dias Rodrigues
(Author)
FEUP
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Journal
Pages: 3350-3366
ISSN: 0022-2461
Publisher: Springer Nature
Scientific classification
FOS: Engineering and technology > Mechanical engineering
CORDIS: Technological sciences > Engineering > Mechanical engineering > Vibration engineering
Other information
Abstract (EN): Abstract Composition cork can be regarded as an interesting solution for light-damped sandwich panels. Despite the emergent interest on these materials for structural applications, there is a lack of information concerning its static and dynamic properties. This study presents a comparative study on a set of different experimental characterization methodologies applied on a selected agglomerated cork for vibration damping applications. The obtained results support the assumption of an air spring/viscous-based mechanism ruling the low-frequency behaviour of these materials. This assumed behaviour is a result from the observations of the cellular microstructure of natural and composition corks. Indicative values for the Young’s modulus, storage modulus and loss factor are provided as results from this study. In addition, a multilayer beam finite element, based on a mixed formulation, is proposed to be applied in an inverse characterization methodology and to be used also for the experimental validation tasks. The finite element proved to be efficient and accurate.
Language: English
Type (Professor's evaluation): Scientific
Contact: jdr@fe.up.pt
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