Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-1-1
УДК 669.715
Klochkov G.G., Grushko O.E., Klochkova Y.Y., Romanenko V.A.
INDUSTRIAL DEVELOPMENT OF HIGH-STRENGTH ALLOY V-1469 OF Al–Cu–Li–Mg SYSTEM

This paper presents results of researches of industrial sheets, plates, extrusions and rolling rings from new high-strength corrosion-resistant alloy V-1469 with low density based on Al–Cu–Li–Mg–Ag system.

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2.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-2-2
УДК 621.775.8
Farafonov D.P., Degovets M.L., Serov M.M.
THE INVESTIGATION OF THE PROPERTIES AND TECHNOLOGICAL PARAMETERS PRODUCING METALLIC FIBERS FOR ABRADABLE SEALING MATERIALS OF AIRCRAFT GTE

In order to increase the operating temperature of abradable seal materials the prop-erties and technological parameters for obtaining metallic fibers by method of extraction melt hanging drops from a variety of heat-resistant alloys based on nickel, iron and intermetallic compounds Ni3Al and NiAl was investigate. The possibility of creating high-effective sealing materials with operating temperatures above 1000°C for use in the flow path of the turbine GTE are shown.

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3.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-3-3
УДК 678.8
Borshchev A.V., Khrulkov A.V., Halturina D.S.
MANUFACTURING POLYMER COMPOSITE MATERIAL WITH LOW POROSITY FOR USE IN LOW- AND MEDIUMLOADED STRUCTURES

Currently, the use of vacuum impregnation techniques for the production of PCM utilized a number of foreign companies and finds application in mass production of crit-ical parts. To implement this technology in mass production of aircraft structures is necessary to develop PCM is not inferior to the properties of analog, manufactured by autoclave method, as well as technology that provides guaranteed obtaining of con-structions with specified properties.

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4.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-4-4
УДК 667.621.262.2
Tyumeneva T.Y., Zhadova N.S., Lukina N.F.
DEVELOPMENT OF VIAM FEDERAL STATE UNITARY ENTERPRISE IN THE FIELD OF ADHESIVES OF INDUSTRIAL RUBBER ASSIGNMENT AND BEING SELF-GLUED MATERIALS

Properties of adhesives of industrial rubber assignment developed in VIAM Federal State Unitary Enterprise, in comparison with domestic and foreign analogs are given. Being self-adhesive materials for temporary operational repair of exterior surface of products of aviation engineering are provided.

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5.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-5-5
УДК 667.621.262.2
Sharova I.A.
DOMESTIC AND FOREIGN EXPERIENCE IN AREA OF COLD CURING EPOXY ADHESIVES DEVELOPMENT

Advantages of repair technologies with use of adhesives materials are shown. The main properties of the domestic and foreign epoxy adhesives used at carrying out number of rescue and recovery operations are given: for elimination of failures and carrying out preventive works on vessels, oil and gas pipelines; in the aviation industry, including cellular designs, and also for the solution of actual problem of car repairs.

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6.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-6-6
УДК 678.01:539.3:539.27
Deev I.S., Kablov E.N., Kobets L.P., Chursova L.V.
RESEARCH OF THE SCANNING ELECTRON MICROSCOPY METHOD DEFORMATION OF MICROPHASE STRUCTURE OF POLYMERIC MATRIX AT MECHANICAL LOADING

The scanning electron microscopy method (SEM) by special technique of high reso-lution has investigates deformation of microphase structure of surface fracture of poly-meric matrix in epoxy carbon-, glass- and organoplastics at mechanical loading. It is shown that under the influence of mechanical loading of composite there is reorganiza-tion of structure of matrix. It is revealed that thermosetting polymeric matrix in the course of mechanical loading are capable (is plastically irreversible) to be deformed up to partial or complete disintegration assotsiats particles of disperse phase with formation of structures of linear type. It is shown that of surface fracture epoxy carbon-, glass- and organoplastics at mechanical loading is defined by the deformation processes of «torsionny» (rotational) type connected with mutual turn of local volumes of matrix (torsions).

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7.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-7-7
УДК 620.186.14
Gulyaev A.I., Iskhodzhanova I.V., Juravleva P.L.
APPLICATION OF OPTICAL MICROSCOPY METHOD FOR THE QUANTITATIVE ANALYSIS OF POLYMER COMPOSITE MATERIAL STRUCTURE

Given in normative and technical literature methods of pore volume fraction and re-inforcing filler fraction definition are integral, i.e. provide information about average value of the analyzed parameter. The method of optical image analysis is method of fiber volume fraction measurement, not requiring application of chemical reagents and providing information on geometrical characteristics of fibers and void and about their distribution in polymeric matrix. The description of the developed techniques of the quantitative analysis of woven and unidirectional polymer composite material structure by optical microscopy is provided in this work.

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8.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-8-8
УДК 539.217.3:539.219.3
Frolov A.S., Panin S.V.
EARLY STAGES OF ENVIRONMENTAL DEGRADATION INVESTIGATED BY MOISTURE TRANSFER PARAMETERS OF CFRP USED FOR AEROSPACE APPLICATIONS

Moisture transfer parameters were evaluated for Hexcel CFRP, used in aerospace applications. The additive moisture transfer model was used to investigate the early stages of environmental degradation. After 6 month of outdoor exposure in warm tem-perate maritime climate initial stages of polymer degradation were discovered in surface layer less than 10 µm. Influence of CFRP degradation on the moisture transfer pa-rameters was evaluated.

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9.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-9-9
УДК 539.217.3:539.219.3
Panin S.V., Startsev O.V., Krotov A.S.
INITIAL STAGE ENVIRONMENTAL DEGRADATION OF THE POLYMER MATRIX COMPOSITES EVALUATED BY WATER DIFFUSION COEFFICIENT

Sorption and diffusion model, considering Fickian diffusion, structural relaxation, chemical reactions and the influence of damaged surface was proven to be useful for evaluation of CFRP initial stages of degradation. After 6 month of outdoor exposure in warm temperate maritime climate initial stages of polymer degradation were discovered in surface layer less than 10 µm. The degradation does not affect physico-mechanical properties of composite, but the diffusion coefficient is increased by 65%.

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10.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-10-10
УДК 629.7.018.4:620.193
Grinevich A.V., Lutsenko A.N., Karimova S.A.
THE DESIGN CHARACTERISTIC OF METALLIC MATERIALS TAKING INTO ACCOUNT THE HUMIDITY

The problem of determining the design characteristics of structural metallic materials in connection with the new edition of Aviation Rules is considered. It is shown that the requirements for accounting for the influence of corrosion environments are included in the section laying down the requirements for the design values of strength properties. The criterion of damage to corrosion, which allows to realize the effect of «compression» of time, which provides the basis for the determination of the calculated values of the fatigue life when exposed to corrosive environment, is proposed. A list of the strength characteristics for which it is advisable to determine the estimated value of the strength characteristics of the humidity is established.

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11.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-11-11
УДК 621.357.77
Semenychev V.V.
CORROSION RESISTANCE OF ALLOY D16CH.-T SHEETS IN MARINE SUBTROPICS

The corrosion resistance of alloy D16ch.-T sheets samples in a marine subtropics are investigated. It is shown that the distance from the sea intensity of corrosive damage is reduced because of the decrease in the concentration of chloride ions. Statistical pro-cessing of the results of the experiments was carried out and mathematical models, which characterize the distribution chlorides at various distances from the sea, were offered.

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12.
dx.doi.org/ 10.18577/2307-6046-2014-0-7-12-12
УДК 678.747.2:536.46
Skrylyov N.S., Volnyj O.S., Abramov D.V., Shurkova E.N.
RESEARCH THE INFLUENCE OF TEMPERATURE AND HUMIDITY FACTORS ON CHANGE OF FIRE SAFETY CHARACTERISTICS FOR POLYMERIC COMPOSITE MATERIALS WHICH ARE SUBJECT TO CLIMATIC AGING

The influence of climatic aging factors (temperature and humidity) on change of characteristics of fire safety for standard representatives of polymeric composite mate-rials is investigated. It is shown that after exposure at elevated temperature and humidity, depending on the chemical nature of polymeric matrix, characteristics of smoke density and heat release can considerably variation, and change of characteristics can occur as towards improvement, and deterioration.

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