Keyword: «climatic tests»

The results of the elastic-strength properties of PCM, orderly reinforced with basalt-carbon fabrics, exposed for 12 months in an open polygon in a sharply continental climate for the impact of natural climatic factors on the basis of the Center for Collective Use of the Federal Research Center of the Yakutsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences in Yakutsk, are presented.

When evaluating the quality of any product, it is advisable to evaluate not only its functional and operational characteristics, but also the degree of environmental impact in which the product retains the declared quality characteristics. In the conditions of the North and the Arctic, the issues of reliability of materials, equipment and structures are of paramount importance. The paper shows the achievements and capabilities of the institutes of the Federal Research Center YaSC SB RAS in the field of climatic testing of materials, products and structural elements in the extremely cold climate of Yakutia.

The tasks of predicting the defining characteristics of composites under the influence of extreme factors are formulated within the framework of variational formulations. Based on modern variational formulations, generalized durability models have been constructed and effective methods for predicting the defining characteristics of composites in extreme conditions have been developed. The developed variational methods have been applied to solve the problems of assessing the service life of new promising composite materials (CM) for extreme conditions. Computational experiments have been conducted.

A study was conducted on the possibilities of using the methodology developed within the framework of variational formulations based on modern principles of the kinetic theory of strength (KTS) for effectively solving the problems of high-precision prediction of the defining characteristics of glass-reinforced plastics. Within the framework of variational formulations based on modern principles of the KTS, an optimal generalized durability model (GDM) was developed that takes into account the simultaneous influence of several destabilizing factors on the composite. The developed generalized durability model was used to effectively assess the durability of glass-reinforced plastics under the influence of extreme environmental factors. Based on the developed forecasting methodology, computational experiments were conducted within the framework of variational formulations, and optimal durability models were developed for composite materials such as fiberglass, which allow for the long-term prediction of the residual resource of fiberglass in the harsh continental climate of the Arctic and Subarctic zones.