On the Dynamics of Motion and Reflection of Temperature Solitons in Wave Heat Transfer in Limited Regions

This paper considers the problem of determining the strength of carbon fiber reinforced plastic with straight and curved fibers under high-speed loading. High-speed tests of unidirectional CFRP specimens with rectilinear and wavy structure have been carried out. The influence of the structure and high-speed loading on the ultimate strength and ultimate deformation of the material is investigated. For the first time, a detailed study of the effect of fiber curvature on the properties of CFRP under high-speed deformation has been carried out. As a result of dynamic tests, it was shown that the ultimate strength in unidirectional laying is higher than in wavy laying. The effect of increasing the ultimate deformations of specimens with bent fibers was established, which was noted earlier for the case of tensile tests.

Section: Investigation Of the Strength Of Composite Materials Under High-speed Loadingmentioning

confidence: 99%

Effect of High Velocity Deformation on Strength of ArmoredComposite Materials

Thang¹

2021

“…In linear problems of statics, in fact, as experiments show, the effect of thin coatings can be neglected. However, in more specific problems (for example, under conditions of finite deformations, nonlinear elasticity), neglecting the effect of thin coatings can lead to significant calculation errors [31][32][33][34][35][36][37]. Significant effects associated with the influence of thin polymer coatings on the stress-strain state of thin-walled metal structures can manifest themselves in stability tests and can be associated with the action of residual stresses.…”

Section: Evaluation Of the Strength Properties Of Coated Metal Elementsmentioning

confidence: 99%

Creation of Polymer Coatings for Improving of Protective Properties of Surfaces

Orekhov¹

2021

In this paper, the preparation of polymer coatings on the surface of metal structural elements is considered to improve their physical, mechanical and strength properties. It is shown that the behavior of substrate samples under mechanical loads can be estimated using mathematical modeling methods. The properties of coatings and the mechanical properties of coated and uncoated metal plates have been evaluated. Methods for constructing mathematical models of metal plates of various structures are proposed.

“…Currently, a large number of studies have been carried out to obtain and study the strength of composite materials [1][2][3][4][5][6][7][8][9]. A large amount of experimental data dedicated to the synthesis and exploration of heterophase composites were obtained [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Effect of Shape of Armoring Fibers on Strength of Composite Materials

Y.A.Vahterova¹

2021

In this work, experimental studies of the effect of fiber curvature on the strength and ultimate deformations of epoxy carbon plastic samples under loading are carried out. On the basis of the experimental studies carried out, the static characteristics of the composite layered material, which are promising for use in the structures under consideration, have been determined. Based on the test results, it was demonstrated that in the design calculations for the products under consideration, it is possible to use static characteristics, since an increase in the deformation rate of the material leads to an increase in strength and, therefore, the calculation results will provide an additional margin of safety.