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The production of polymer composite materials (PCM) is one of the fastest-growing industries in the world. In both defense and civil industries, it is impossible to imagine the creation of new equipment samples without the use of PCM [1, 2]. The PCM advantage consists in that the material, production technology, and design are created simultaneously [3, 4]. This determines high innovation degree at all stages of the PCM life cycle: from obtaining raw materials to designing production and operation of products. These materials have high specific strength and rigidity and are able to work in such operating conditions where conventional structural materials cannot be used [5, 6]. In recent decades, along with the development of new high-strength reinforcing materials for composites, new reinforcement technologies are being actively developed [7]. PCM production using woven reinforcement or premixes (preforms) [8] is one of them. The woven preform is a composite semi-finished product in a form of a “soft sleeve”, fabric or multilayer braiding of the mandrel if a variable diameter is necessary. Any highstrength carbon fibers, fiberglass, fibers of natural origin can be the material for the manufacture of such preforms. However, the application of this technology is the most effective when using continuous reinforcing fillers [8]. The use of preforms makes it possible to abandon rigging which significantly simplifies the technology of production Copyright © 2020, A. Kondratiev, O. Andrieiev, M. Shevtsova

Determining the mechanical characteristics of composite materials reinforced with woven preforms