标题：Investigation of the response surfaces describing the mathematical model of the influence of temperature and BeO content in the composite materials on the yield and ultimate strength
摘要：The object of research is the dependence of mechanical properties (yield strength and ultimate strength) on the beryllium-based DSCM on the parameters of their operation (temperature regime) and BeO content in the composition of the material. Such dependence can be established on the basis of technological audit of the process, which has the ultimate aim of constructing an analytical description based on the results of production experimental data, for example, in the form of regression equations.Ridge analysis is chosen for the research. This method allows analyzing the received response surfaces and determining not only the tendency of the dependences of the material properties on the operation parameters and the characteristics of the material itself, but also to more accurately estimate the optimum values. The latter is particularly advantageous from the point of view of optimizing the operation parameters of structures made from these materials, and also from the point of view of the process of their subsequent disposal.Based on the ridge analysis, the values of the input variables (temperature and BeO content) are chosen, which allow obtaining optimal values of the ultimate strength and yield strength. This makes it possible to obtain sets of values of these factors that can be used in the manufacture, operation and disposal of beryllium-based DSCM. Thus, it is found that the optimum values of the yield strength, corresponding to a range of values from 130 to 200MPa, are achieved at t=456 °C and BeO content of 1.35 %, as well as t=528 °C and BeO content of 1.08 %. The optimum values of the ultimate strength, corresponding to a range of values from 180 to 250 MPa are achieved at t=384 °C and BeO content of 1.35 %, as well as t=326 °C and BeO content of 1.845 %. The obtained results allow to select the optimal performance characteristics of the beryllium-based DSCM, which will ensure its maximum efficiency and at the same time reduce the operating costs, which is economically advantageous.
