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Composite materials are widely used in high-tech fields of industry, especially in the aeronautical and aerospace industry, land and water transport. Weight reduction, high creep resistance, very good damping deformations compared to traditional materials, represent some of the advantages for these materials- usage. The studies carried out aim to determine the evolution of the physical-mechanical characteristics of a composite material with a thickness of less than 1 mm, using descriptive statistics techniques. In...

The theoretical model of perfect business competition is designed based on five assumptions: atomicity of demand and supply, homogeneity of the product, free entry/exit in/from a branch of activity or on/from the market, market transparency, (with the fundamental assumption of the individual's rationality) and perfect mobility of production factors [1], [2]. The factorial analysis carried out for an economic agent from an Eastern European country highlighted the fact that the production function is homogeneous. Fo...

Water pollution with oil residues is a particularly important and difficult problem to prevent and solve. The ecological consequences of black tides have proven to be particularly serious and even catastrophic for marine ecosystems. In this sense, the limitation and concentration represent the optimal response action to hydrocarbon pollution. The aim of the work was to digitally design a woven textile reinforcement used as a matrix of the composite material from which the freeboard and skirt of the floating surfac...

The safety of navigation and life in the risk areas adjacent to the coastal area, represent the central objective of the paper and meet the provisions of the European directive "in force." In this context, for defining the geometry of the autonomous modular system used as physical system for marking the fairway, mathematical prediction models were developed. The prediction of phenomena and functional characteristics for autonomous modular system was possible by using a specialized software, where the calculation c...