Quantifying Damping Characteristics: A Logarithmic Decrement Method for Evaluating Loss Factor of Aluminium Plates
Keywords:
damping, viscoelastic material, constrained layerAbstract
Excellent damping characteristics can be found in viscoelastic materials. The subject of damping is the material's ability to dissipate energy. Materials that are viscoelastic are utilised to reduce vibration. Viscoelastic material may be applied to the metal plate as free and limited layer damping. First, two aluminium structures were built using free and limited layer damping. The loss factor for both of the structures is then calculated using the logarithmic decrement method. The results show that the loss factor of the structure with limited layer damping is higher than the loss factor of the structure with free layer damping.Another thing that has been seen is that as the material's thickness increases and as the natural frequencies decrease, the viscoelastic material's capacity to dampen vibrations gets better.
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