scholarly journals ВИДИ МЕТРОЛОГІЧНИХ ХАРАКТЕРИСТИК І СКЛАДУ РОБІТ З ЇХ ВИЗНАЧЕННЯ НА ОСНОВНИХ СТАДІЯХ ІСНУВАННЯ КОМПОЗИТНИХ КОНСТРУКЦІЙ АГРЕГАТІВ ПОВІТРЯНИХ СУДЕН ТРАНСПОРТНОЇ КАТЕГОРІЇ

2021 ◽  
pp. 146-157
Author(s):  
М. Н. Журибеда
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Metrological Support ◽  
Composite Structures ◽  
Metrological Characteristics ◽  
Polymer Composite Materials ◽  
Production Operation ◽  
Complex Criterion ◽  
Design Production ◽  
Technical Products

It is shown that the development of the concept of metrological support for the creation of composite structures of aircraft aggregates of the transport category and their support at all stages of the existence of an aircraft should be based on the formation of a complex criterion for the effectiveness of the use of polymer composite materials. It is noted that the effectiveness of a structure made of polymer composite materials is provided by various methods, methods and technical means of metrology. The structure of a complex of studies aimed at developing the concept of metrological support is discussed, the first point of which is to analyze the types of metrological characteristics and the scope of work to determine them at the main stages of the existence of composite structures of aircraft aggregates of the transport category. Based on the analysis of numerous publications on the problem of metrological support of the main stages of creating technical products, the main types of measurements of the metrological characteristics of composite structures of aircraft aggregates of the transport category have been established, and the composition of the nomenclature of works on metrological support of the main stages of the existence of these structures has been determined. 12 main types of measurements of parameters have been identified, on which the whole variety of production physical quantities and the description of the properties and characteristics of structures of aircraft aggregates made of polymer composite materials are based. The composition of the main works on the metrological support of the four stages of the existence of the aircraft is revealed: design, production, operation and disposal of composite structures formed into systems of sequential blocks for performing these works. It is shown that the tasks of metrological support at the facility manufacturers should be solved during the technological preparation of serial production and testing of the installation series of products, and also take into account the peculiarities of aircraft operation and disposal of composite structural elements in terms of work safety and economic efficiency of their results. An enlarged sequence has been established for organizing work on metrological support for measuring the properties of composite structures of aircraft aggregates at aviation enterprises. The results presented in the first approximation provide a solution to practically important aspects of the problem under discussion.

scholarly journals КЛАСИФІКАЦІЙНИЙ АСПЕКТ МЕТРОЛОГІЧНОГО ЗА-БЕЗПЕЧЕННЯ АВІАЦІЙНИХ КОНСТРУКЦІЙ З ПОЛІМЕРНИХ КОМПОЗИЦІЙНИХ МАТЕРІАЛІВ

2021 ◽  
pp. 65-77
Author(s):  
Wang Bo ◽  
С. А. Бычков ◽  
А. В. Гайдачук ◽  
А. В. Андреев ◽  
М. Н. Журибеда
Keyword(s):  
Life Cycle ◽  
Composite Materials ◽  
Polymer Composite ◽  
Metrological Support ◽  
Composite Structures ◽  
Global Market ◽  
Polymer Composite Materials ◽  
Classification Approach ◽  
Quality Of Products ◽  
High Level

An analysis of the classification aspect of metrological support of aviation structures from polymer composite materials was carried out.It is shown that the effectiveness of the objects under consideration is predetermined by their competitiveness in the global market for sales and services. One of the important components of the multidimensional efficiency of the use of polymer composite materials in the aircraft of the transport category is metrological support at all stages of creating composite structures.It was noted that the main objectives of the qualimetry of aviation structures made of polymer composite materials is to ensure the unity and accuracy, high quality products, reduce the cycle of its production, cost, reliability, and the same operation of operation.The achievement of the objectives of metrological support and challenges facing it is formed on the basis of a classification approach to the analysis of the main stages of the life cycle of the existence of composite structures, including an analysis of the effectiveness of aircraft constructions from polymer composite materials, which constitute the stage of their design and production, as well as tests, operation, disposal and forecast of perspectives Growth of the quality of products from polymer composite materials.A classifier of the stages of the life cycle of aircraft of the transport category of polymer composite materials were proposed, its top-level decomposition was carried out, including the composition of the species, classes, subclasses, groups and subgroups and their analysis was carried out. In the proposed classifier, starting with subclasses, previewed backup blocks, the need to use which may occur upon subsequent analysis of each stage.The proposed classification approach to the metrological support of composite structures and its further development on all the main stages of the life cycle of their existence, it is one of the most important components of the implementation of a high level of competitiveness of domestic aircraft transport categories in the global sales and services market.

scholarly journals A concept of optimization of structural and technological parameters of polymer composite rocket units considering the character of their production

2020 ◽  
Vol 26 (6) ◽  
pp. 5-22
Author(s):  
A.V. Kondratiev ◽  
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Composite Structures ◽  
Linear Thermal Expansion ◽  
Integrated Approach ◽  
Polymer Composite Materials ◽  
Launch Vehicles ◽  
Space Technology ◽  
Technological Parameters ◽  
Load Bearing

We present a concept of optimization of structural and technological parameters of rocket and space technology units from polymer composite materials under heterogeneous loading and a project complex for their rational selection, taking into account the current level of production. The concept includes five interconnected components: design, production technologies, operation, ecology, and safety of industrial life. The analysis of possible criteria-based optimization estimates is carried out on the example of the technological component of the problem. Decompositions of the general task of parameters’ optimization were carried out into a number of types that correspond to the main types of structures of the considered class of technology: load-bearing compartments of launch vehicles and precision structures of spacecraft. An integrated approach to the optimal design of the bearing compartments of the head block of launch vehicles of various structural and power schemes is proposed. A distinctive feature of the approach is the possibility of multifactor optimization of the parameters for units of the class under consideration while providing regulated load-bearing capacity with simultaneous power and heat loading, taking into account technological, operational, economic, and environmental restrictions that correspond to the existing level of their production. A conceptual approach to the synthesis of rational parameters of composite frames of solar panels of various structural and power circuits is proposed, based on the integrated realization of well-known principles implemented by relevant units that are integrated by computer technology into a single optimization complex. An integrated approach has been synthesized to create precision space structures from polymer composite materials, which makes it possible to obtain rational thermo-dimensionally stable composite structures. An algorithm for determining the rational structure of a composite package has been developed and implemented, which provides a compromise combination for the absolute values of the coefficient of linear thermal expansion keeping maximum precision of the product in accordance with the proposed criteria. The results obtained made it possible to provide an increase by more than 20% in the mass efficiency of the composite aggregates of rocket and space technology produced at the leading enterprises of the industry.

scholarly journals Modeling the Structures of Oriented Macrofiber Polymer Composites as Capillary-Porous Bodies

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Aleksandr E. Kolosov ◽  
Aleksandr V. Gondlyakh ◽  
Volodymyr I. Sivetskii ◽  
Elena P. Kolosova ◽  
Volodymyr V. Vanin ◽  
...  
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Composite Structures ◽  
Geometric Modeling ◽  
Structural Characteristics ◽  
Geometric Model ◽  
Polymer Composite Materials ◽  
Technological Parameters ◽  
Porous Bodies

The problems of modeling the structure and design of technical parameters for forming of oriented macrofiber polymer composites are analyzed. The considered approaches are based on the application of geometric modeling of the structure of oriented fibrous fillers and the design of the parameters of technical means for forming oriented macrofiber polymer composite materials. Peculiarities of the application of the phenomenological and structural approaches to the design of structural and technological parameters of technical means and to the calculation of the elements of composite structures based on oriented macrofibrous fillers are considered. The technique for determining the structural characteristics of oriented macrofibrillar fillers based on its adequate geometric model as capillary-porous bodies is given. As the structural characteristics, the porosity, the specific internal surface, and also the effective (hydraulic) capillary radius of oriented macrofibrous fillers are considered. It is noted that the obtained structural models are used, in particular, to the prognosis of the design and technological parameters of the technical means for molding macro-fiber polymer composite materials.

FSUE "VIAM" solvent-free binders for polymer composite materials

2016 ◽  
Vol 2 (2) ◽  
pp. 37-42 ◽  
Author(s):  
E. N. Kablov ◽  
L. V. Chursova ◽  
A. N. Babin ◽  
R. R. Mukhametov ◽  
N. N. Panina
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Solvent Free ◽  
Polymer Composite Materials

Aging of polymer composite materials under loading. (See Beginning in #10-2020)

2020 ◽  
pp. 2-12
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Polymer Composite ◽  
Polymer Composite Materials ◽  
Cyclic Loads ◽  
Reinforced Plastics ◽  
Water Exposure ◽  
Laboratory Conditions ◽  
Bending Loads ◽  
Moisture Conditions

A study review of aging polymer composite materials (PCM) under different heat-moisture conditions or water exposure with the sequential or parallel influence of static or cyclic loads in laboratory conditions is presented. The influence of tension and bending loads is compared. Conditions of the different load influence on parameters of carbon-reinforced plastics and glass-reinforced plastics are discussed. Equipment and units for climatic tests of PCM under loading are described. Simulation examples of indices of mechanical properties of PCM under the influence of environment and loads are shown.

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