Decision-making on quality composition materials exposed to temperature differences

Abstract

Abstract An approach is considered that allows one to make a decision on the choice of compositions of composite materials that have been exposed to temperature changes for a long time. The alternatives are considered – compositions of materials and special criteria, the analysis of which underlies the optimal choice of composition from the group under consideration. Proposed the formation of criteria by which the decision is made to assess the quality of building composite materials. In this article, the criteria are formed on the basis of such properties of building materials as hardness and modulus of elasticity on the surface of the test samples, which were subject to negative and positive temperature extremes. Criteria for each property of the sample are formed on the basis of the given values relative to the starting point of exposure. To make a decision about the quality of composite materials, it is proposed to form three criteria for each of the considered properties of materials. The first criterion is calculated as a change in the corresponding property relative to the initial exposure point. The second criterion is determined sequentially with respect to each exposure point by a change in each of the considered properties. The third criterion is represented as the sum of the first two criteria. After that, some provisions of the ELECTRE methods are applied for ranking the studied compositions of composite materials.