Development of quality criteria systems for polymer reinforced pipes and their connections. Questions of mathematical processing of these indicators

Quality management of polymer reinforced pipes of various types, especially at the operation stage, remains a poorly studied area since it requires complex research involving application of powerful mathematical tools, physical and chemical tests of a number of materials and the development of appropriate methods and software. At the same time, the basis for the research should be a system of quality criteria for each type of reinforced polymer pipes and their connections. Quality criteria are essentially standards for the indicators of consumer properties of the structural components of indivisible elements of technical systems (in this case, reinforced polymer pipes of various types and their structural elements) in the initial state and under external influences at different stages of the life cycle. Focusing on deviations of actual indicators from the initially established ones and the degree of their admissibility, it is possible to assess the current state of the technical system, and, therefore, determine the possibility of its further operation, identify associated risks and, in general, develop a quality management loop through additional maintenance, repairs or other measures. In the study, we will classify the types of polymer reinforced pipes available on the market and create a system of quality criteria for each type of pipe. This will serve as the necessary basis for subsequent research and will allow the development of methods for assessing the technical condition and quality management of operating polymer reinforced pipes.