In this doctoral thesis the improvement of the damping capacity of an electrostatic tuneable friction damper is investigated by designing the properties of a newly developed dielectric material exhibiting a high permittivity with enhanced tribological properties. The presented semiactive damper consists of a lamella and a dielectric layer which are implemented into a light-weight structure, thus providing intrinsic mitigation to their inherent vibrations. A dielectric layer with an electrode is integrated into a structure while a reinforcing layer (carbon fibre reinforced lamella) is placed on top. Their reversible connection is achieved by an electric field between electrode and lamella. As the maximum shear stress is exceeded due to vibration, friction occurs between dielectric material and lamella resulting in a semi-active dissipative mechanism.