It is well known that sandwich-type structures exhibit excellent vibration-damping properties, especially those based on natural fiber-based materials. In industry, the vibration-damping characteristics of wood are widely used across various sectors. Several studies have been conducted regarding balsa wood and its dynamic elastic properties. The relatively low density of this wood, combined with its damping properties, makes it very attractive for industrial applications.
In this study, a local fast-growing wood hybrid aspen and poplar is proposed as an equivalent to balsa wood, and its dynamic elastic properties are compared. The core material is selected from fast-growing wood, which has approximately half the density of birch veneer. The low density allows for a reduction in the weight of the structure and can be as effective as solid plywood. To verify this, sandwich panels were manufactured, tested accordingly, and experimental data were obtained.
Keywords: wood sandwich, dynamic modulus of elasticity, loss factor
Authors
Martins Irbe
Riga Technical University
Andrejs Pupurs
Riga Technical University
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