Abstract
Samples of new self-adhesive, constrained vibration-damping coatings (VDC) and layers for “sandwich” type plates for damping flexural waves in plates are described. These coatings consist of aluminium foil, perforated cardboard and layers of self-adhesive viscoelastic material. The results of measurements of the temperature-frequency characteristics of the loss factor of flexural waves in plates which are damped with these coatings are given. Methods of calculation of viscoelastic characteristics of multi-layer constructions are considered. The peculiarities of use of constrained and hard vibration damping coatings are investigated on the first natural frequencies while damping flexural waves of plates and beams, clamped at their edges.
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