Static and Dynamic Characterization of Cork Compounds for Sandwich Beam Cores

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

R. A. S. Moreira (Autor) Outra; F. J. Q. de Melo (Autor) Outra; J. F. Dias Rodrigues (Autor) FEUP

Revista

Título: Journal of Materials Science

Páginas: 3350-3366

ISSN: 0022-2461

Editora: Springer Nature

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia mecânica > Engenharia da vibração

Outras Informações

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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica