Vibration damping characteristics of the cork-based composite material in line to frequency analysis

The conducted research suggests possibility of replacing extruded polystyrene with a renewable cork-based material in laminated composite structures.Different fractions of the cork-based material of a composite laminate have been applied.The composites have been tested employing a hammer-focused vibration method.Conforming to obtained results, the cork-based material of smaller fraction has damping properties similar to those of the extruded polystyrene composite.Integrating cork into the structure of the composite has the opportunity to develop a more eco-friendlier and sustainable product and to improve the adaptive properties of passive control systems used for vibration damping applications operating in the middle and high frequency zones.