Archive - Электронный научный журнал "ТРУДЫ ВИАМ"

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1.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-3-10
УДК 620.187:669.017.165
Aslanyan G.G., Sukhov D.I., Mazalov P.B., Sulyanova E.A.
Fractographic study of Co–Cr–Ni–W–Ta alloy samples obtained by selective laser melting

Fractographic investigation of Co–Cr–Ni–W–Ta alloy samples obtained by selective laser melting and having horizontal and vertical orientation on a build platform is performed. The samples underwent hot isostatic pressing. The microstructure near the fractures was investigated and type of destruction and porosity were determined. The dependence of the samples orientation on their rupture character is investigated. All samples exhibit viscous rupture during long-term strength test.

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2.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-11-20
УДК 621.791.14
Bakradze M.M., Panteleev M.D., Skupov A.A., Belozor V.E., Ponomarev P.A.
FSW-joints mechanical characteristics optimization by modern computing systems

The influence of the friction stir welding parameters of aluminum-lithium alloys V-1461 and V-1469 on welded joint surface roughness and mechanical properties has been investigated. Experiment planning was carried out and mathematical models for the dependencies of strength and roughness on the parameters of the FSW processwere developed. For each of the studied alloys a welding parameter range has been established, which ensures an increased purity of the weld surface after welding(Rz50 μm), absence of defects and the welded joint strength
level about 0,75–0,8 of the base metal strength.

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3.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-21-29
УДК 678.8
Kirin B.S., Lonskii S.L., Petrova G.N., Sorokin A.E.
Materials for the 3D-printing on the basis of polyetheretherketones

Development of foreign production polyetheretherketon materials for the 3D printing by the selection laser baking (SLS) and fiber fusing (FDM) methods of on the basis of polyetheretherketones of foreign production. 3D-technologies allow to make aviation details and designs of the composite geometry for a uniform production cycle with minimum labor costs and quantity of a wastage. Results of compositions properties research for processing by SLS- and FDM-methods on the basis of polyetheretherketon of Zypeek (China) brands 550PF and 330UPF and also production of the Victrex company (England) brands 90G, 150G and 380G has been shown in article. The main requirements to such compositions and the principles of their preparation for processing has been formulated.

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4.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-30-37
УДК 678.8
Ilyukhina M.A., Smirnov D.N., Bryk Ya. А.
Properties of cured silicone and polysulfide sealant filled with diatomite

Research of mechanical and technological properties of skilled compositions on the basis of the silicone and polysulfide low-molecular rubbers of cold curing filled with diatomite in comparison with serial sealant. Possibility of application of diatomite of different brands as a part of sealant is shown. Positive tendencies and shortcomings of these compositions are noted. Possibility of expansion of scopes of sealant filled with diatomite is shown. Characteristics of applied diatomites are specified.

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5.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-38-47
УДК 678.8
Evdokimov A.A., Gulyaev I.N., Zelenina I.V.
Investigation of the physicomechanical properties and microstructure of volume-reinforced carbon fiber reinforced plastic

Devoted to the study of the dependence of the physicomechanical properties of carbon-fiber reinforced plastic made using volume-reinforced preform on the type of weaving of fibers in the preform. It is shown that carbon fiber reinforced plastic obtained on the basis of the preforms of the orthogonal structure has better characteristics than carbon fiber reinforced plastic obtained on the basis of the preforms of the satin reinforcement structure.Micrographs of the obtained carbon fiber reinforced plastic and micrographs of individual filaments of carbon fiber used are shown.Recommendations are given to improve the values of the physicomechanical characteristics of the materials under study.

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6.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-48-56
УДК 678.8
Rackmatullin A. А., Postnov V.I., Strelnikov S.V.
Development and application experience of software for carrying out the formation process of structures from PCM on the heated equipment

The experience of development control systems for the process of forming of structures from PCM is presented, the main attention is paid to the development of software for such systems. The requirements for the software from the process technologists, hardware features of the system implementation, different types of sensors connected to the system, methods of their use are considered. The scheme of control of the vacuum pressure value during PCM molding is given. The description of structural blocks of the program of control of molding is given.

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7.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-57-66
УДК 678.8
Ivanov M.S., Veshkin E.A, Satdinov R.A., Donskih I.N.
New domestic coated textile material for flexible air conditioning ducts of flight vehicles

The analysis of information sources in area of the materials applied to manufacturing of flexible air conditioning ducts of flight vehicles is carried out. Requirements are as a result formulated and the new domestic coated textile material is developed for manufacturing of flexible air conditioning ducts of flight vehicles of the VRT-12 brand on the basis of E1-100 fiber glass textile with bilateral fluoropolymer covering. Research of its properties is conducted. The material has the weight of 1 m2 no more than 275 g, meets the requirements AP-25 of flammability, maintains excess pressure of 0,01 MPa and can be maintained in the range of temperatures from -60 to +80°С.

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8.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-67-75
УДК 667.648.17
Kuznetsova V.A., Emelyanov V.V., Marchenko S.A., Silaeva A.A.
Application of metalpolymer compositions for seal of casting defects and surface alignment on details and products of aviation engineering

In this work the most functional filling systems on the basis of the epoxy polymeric system filled with spherical aluminum powder are considered. Researches of influence of the maintenance of metal filler in the received compositions and its specific surface on strength characteristics – breaking strength and relative lengthening are caried. It has defined, also influence of specific surface of filler and mode of curing of composition on physicomechanical properties of filling layer, its hardness, and also resistence to mineral oil LZ-MG-2.

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9.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-76-87
УДК 543.456:621.793
Denisova V.S., Lonskii S.L., Kurshev E.V., Malinina G.A.
Investigation of structure formation of reaction cured coatings by scanning electron microscopy

The design of reaction cured coatings is the advanced direction of development in the area of heat resistant glass enamel coatings for heat resistant nickel alloys and corrosion resistant steel. The advantage of reaction cured coatings is their ability of curing those at temperatures close to operating ones. In this work the structure and its specialities while high temperature forming and exploitation are investigated by scanning electron microscopy and electron probe microanalysis.

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10.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-88-98
УДК 620.178.6:678.8
Ruzakov I.A.
Strain state monitoring of the structural state from polymer matrix composite material based on fiber-optic sensors (review)

A large number of published articles devoted to the integration of fiber optic sensors into the structure of composite material demonstrates research and practical interest in this area. Fiber optic technology does possible to monitor the internal state of the plate from polymer matrix composite material. This allows to track the resource of individual structural elements in real-time and quickly identify defects and cracks.

This article provides an overview of modern methods for determining the impact damage of structural elements of aircraft made from polymer matrix composite material using fiber-optic Bragg gratings. The advantages of using fiber-optic sensors in the systems of embedded control of the plate from polymer matrix composites is shown.

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11.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-99-107
УДК 667.621
Starostina I.V., Petrova A.P., Shevchenko Yu.N., Shishimirov M.V.
Control thermoplastic binding for PCM (review)

Тhe description of test methods thermoflexible binding, used as a part of polymeric composite materials, – density, flowability indicator melt, water absorptions, the adhesive durability, the impact strength, durability is provided at stretching, softening temperature, fire safety characteristics, including combustibility, a smoke education, an oxygen index, thermal emission is provided. Comparison of properties thermoflexible and thermosetting binding is given, advantages of refining technology thermoflexible binding before thermosetting binding are shown.

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12.
dx.doi.org/ 10.18577/2307-6046-2019-0-4-108-120
УДК 699.81:629.7.042.2
Barbotko S.L., Volnyj O.S., Postnov V.I., Shurkova E.N.
Investigation of the effect of reinforcement structures on fire hazard characteristics of the fiberglass

The influence of reinforcement scheme for fiberglass based on phenol-formaldehyde binder and equal-strength fiberglass on fire hazard characteristics determined in accordance with the requirements of aviation standards is investigated.

There is no unambiguous effect of the reinforcement scheme on the recorded values of the optical density of smoke was established.

According to the characteristics of flammability and heat release for this type of material, it was obtained that at a thickness of about 2 mm the material with a unidirectional reinforcement structure has the worst values.

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