The problem of predicting the breaking force of composite samples for tensile, compressive, and shear deformations is considered. The strength behavior patterns of thin-walled samples depending on fiber orientation and sample geometric characteristics are investigated. Cluster analysis methods and Kohonen self-organizing maps are used to reduce the dimensionality of the data and identify dependences. The predictive powers of machine learning models are comparatively analyzed.
Experiments have shown that when the clamping length of yarn is reduced from 500 mm, as specified by the standard, to less than 10 mm, its breaking elongation sharply increases. The possibility of predicting the breaking elongation of yarn at a clamping length numerically equal to the height of the stitch row in warp knitted fabric is considered. Summing this characteristic with the maximum elongation of the stitch structure obtained on the basis of Dalidovich model allows the breaking elongation of knitted fabric to be calculated with sufficient accuracy. It is advisable to apply this method when designing technical fabrics that are subject to high loads.
The article discusses the development of flexible thermal protection system for aircraft made from high temperature materials produced in Russia. The obvious advantages of flexible thermal protection should be exploited by developers of domestic reusable and hypersonic aircraft. Domestic quartz textile materials have a combination of mechanical and thermophysical properties that exceed the similar properties of foreign quartz textile materials.
Medical compression products are based on textile elastomers made from synthetic yarns. The present article discusses the deformation properties of such elastomers. Textile elastomers in medicine are mainly used for the prevention and treatment of varicose veins, for fixing the musculoskeletal system, for the manufacture of bandages, for blood vessel prosthetics, and for acceleration of post-operative tissue regeneration.
Expanding the application areas and operating conditions of marine ropes requires more thorough research into their deformation properties. Such research can be carried out using mathematical modeling of deformation processes, which include both viscoelastic relaxation and viscoelastic creep.
