PROPERTIES AND MICROSTRUCTURE OF AlSi10Mg SAMPLES OBTAINED BY SELECTIVE LASER MELTING

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

“…From the point of view of strength calculations, thin-walled metal structural elements with polymer coatings can be presented in the form of two-or three-layer plates (depending on whether the coating is applied on one or both sides) with a tougher metal middle layer and much more pliable outer layers-coatings [25][26][27]. Currently, not many experimental and theoretical works are known in which the analysis of the macroscopic mechanical behavior of such structural elements is carried out taking into account the effects of the influence of residual stresses [28][29][30]. It is possible to note a wide variety of works in the field of research of functional-gradient thinwalled structures with coatings (see, for example, [26][27][28] and references therein).…”

Section: Evaluation Of the Strength Properties Of Coated Metal Elementsmentioning

confidence: 99%

“…Currently, not many experimental and theoretical works are known in which the analysis of the macroscopic mechanical behavior of such structural elements is carried out taking into account the effects of the influence of residual stresses [28][29][30]. It is possible to note a wide variety of works in the field of research of functional-gradient thinwalled structures with coatings (see, for example, [26][27][28] and references therein). However, in such structures it is usually assumed that the rigidity of the surface layers is higher than that of the inner region.…”

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.