AN APPROXIMATE METHOD OF EXPERT ASSESSMENTS OF THE EFFECTIVENESS OF THE USE OF POLYMER COMPOSITE MATERIALS IN THE STRUCTURES OF CIVIL AIRCRAFT AT THE MAIN STAGES OF THE LIFE CYCLE
Abstract
In connection with the growing use of polymer composite materials all over the world and in domestic aircraft construction in civil aircraft of the transport category, the analysis of forecasting methods of their application at the main stages of the life cycle of this class of structures becomes an urgent problem.
Efficiency, as the ratio between the achieved result and the resources spent on its achievement, can be interpreted as the ratio between the total quality indicators of the created object and the total costs.
However, quality indicators are such metrological characteristics, the quantitative measurement of which in most cases is difficult or almost impossible. In this regard, the qualimetric quality indicators acquire the qualimetric form of qualitative characteristics. Qualimetric characteristics make it possible to operate during their analysis by a productive method of expert assessments of criteria for the implementation of any object, including composite structures of aircraft aggregates. As a criterion for predicting the effective volume of use of composite structures, an analogue of D.L. quality at the stages of their life cycle. The numerical values of each level of the stages of the life cycle are assessed by an expert according to the proposed five-level general identification tables with the subsequent summation of the criterion indicators by stages of the life cycle, making it possible to determine both the efficiency of using composites at individual stages and its integral value for all main stages. The relative value of the efficiency criterion can be represented in monetary terms by multiplying it by an equivalent established on the basis of metrological (qualimetric) methods and means of assessing the results of a particular production.
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DOI: https://doi.org/10.32620/oikit.2021.94.01
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