Orthotropic Elastic Properties Assessment of Sandwich Laminates
AUTOR(ES)
Kenedi, Paulo Pedro, Vignoli, Lucas Lisboa, Duarte, Brenno Tavares, Matos, Fernando Cesar de Abreu, Dias, Humberto Oberosler Terço
FONTE
J. Aerosp. Technol. Manag.
DATA DE PUBLICAÇÃO
26/06/2017
RESUMO
ABSTRACT: Sandwich structures are nowadays widely used due its excellent characteristics of matching light weight with high bend stiffness. However the complex nature of its composition turns the estimation of its mechanical elastic properties challenging. The objective of the present article is to propose an analytical/experimental model to estimate the orthotropic elastic properties of this composite material. To accomplish this objective a theory of anisotropic plates is used together to an extensometric experimental approach. A sandwich laminate specimen, instrumented with strain gages, was submitted through pure bending loading by a mechanical testing machine on a 4-point bending apparatus. The result of this research was the determination of 4 orthotropic elastic properties of the sandwich laminate specimen, namely: the longitudinal and transversal Young moduli, the shear modulus, and the Poisson's ratio.
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