Mechanical Effect and Shielding Effectiveness of the Insertion of Metallic Screen in Glass and Carbon Composite

Warships are equipped with more and more electronic equipments which generate electromagnetic fields of various intensity. The superstructures support several contributors such as radar antennas, high frequency antennas and electronic warfare equipment... each being susceptible to interfere or hinder the other equipments but also perturb the operation of the equipment installed in the living spaces. It is also susceptible to impair the health of the personnel living in these spaces. In the case of Glass Reinforced Plastics, the structure does not conduct electricity and is particularly transparent to electromagnetic radiation. In the case of Carbon Reinforced Plastics, the structure is not enough conductive to obtain a good Shielding Effectiveness. Therefore one of the ways considered is to insert a metallic screen in the composite material.