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Journal of Materials Science

, Volume 45, Issue 12, pp 3350–3366 | Cite as

Static and dynamic characterization of composition cork for sandwich beam cores

  • R. A. S. Moreira
  • F. J. Q. de Melo
  • J. F. Dias Rodrigues
Article

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.

Keywords

Storage Modulus Complex Modulus Sandwich Panel Sandwich Beam Inverse Identification 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors gratefully acknowledge the Fundação para a Ciência e a Tecnologia (FCT) of the Ministério da Ciência e da Tecnologia of Portugal for the financial supported under the research project PTDC/EME-PME/66741/2006. Authors also acknowledge Corticeira Amorim Indústria SA company for providing the composition cork used in this study.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • R. A. S. Moreira
    • 1
  • F. J. Q. de Melo
    • 1
  • J. F. Dias Rodrigues
    • 2
  1. 1.Departamento de Engenharia MecânicaUniversidade de AveiroAveiroPortugal
  2. 2.Faculdade de Engenharia da Universidade do PortoPortoPortugal

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