In this paper, the influence of plasma jet on the cut surface of one laminar composite material (sandwich panels), melting temperature, damage of composite structure, structural changes in the heat affected area and surface quality of test piece after cutting process were investigated. Analysis of differences between classical methods and plasma cutting was made. The advantages of the method and influence of the cutting conditions were emphasized. Systemic approach is used to analyze the work conditions (input, disturbing and output factors). Results of research concerning plasma cutting process of composite materials are presented.

The diminishing of the surface roughness of a metallic part can be performed by using various finishing methods, polishing by means of abrasive flap wheels being one of them. There are several factors that influence the roughness of surfaces finished by means of abrasive flap wheels. When polishing external cylindrical surfaces by means of abrasive flap wheels, the surface roughness can be changed more easily if the following elements are modified: the peripheral speed of the workpiece and of the abrasive flap wheel, the speed of the longitudinal feed, and the grit size of the abrasive material. Experimental research has allowed for the establishment of power-type functions which highlight the influence exerted by the abovementioned factors on the size of the surface roughness parameters R a , RS, RSm, Rku. Analyses of the experimental results have shown that, in the case of the R a roughness parameter, from among the range of interactions of orders 2 and 3, only the interaction between the rotation speed of the abrasive flap wheel and the speed of the longitudinal feed seems to be significant.

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This paper is a study about the symbiosis between the environmental aspects-innovation and competitive character of an industrial organization in our modern and sophisticated world. In actually global market and in conditions of world sever recession, for any organization or economic sector, the chance for surviving and development is given by adopting an innovative culture. This work contains case studies about the necessary steps for developing an innovative organization, a debating about the management of the end of life of industrial products. Is also proposed an example of good practice about the symbiosis between industry, environment and competitively. The proposed model is typically for tools manufacturing technologies, especially for machine manufacturing but is easy to apply in all industrial sectors. A conclusion becomes an axiom-in many cases the old products; technologies or services offer us the best solutions for the future products and technologies.

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