Viscous–elastic properties of varnished wood

Abstract

The varnish together with the wooden support forms a new layered mechanical system that has viscous-elastic properties different from the individual components. The work aims to investigate these properties through mechanical dynamical analysis, studying the influence of the wood species, the main direction, the type of varnish on the storage modulus, loss modulus and damping. The results showed that the wood species, the type of varnish (oil-based varnish and alcohol varnish), the thickness of the varnish film influence the viscous-elastic behavior at different stress frequencies.