Materials Literature
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One of the most important design problems is reducing the weight of a structure without performance degradation. As a rule, calculations at the design stage are performed for the maximum load expected during the life cycle of the product. However, the loads over the operation time may exceed design values (e.g., becau…
The modern demands have been considered for the air-engine branch specialists in conditions of appearance of integrated structures for development of gas-turbine engines. It has been carried out the analysis of the software that is used on air gas-turbine engines designing. The existing training formalization has been…
Method of determination of the contact angle for substances with low temperature of crystallization is developed. Review of relevant existing methods for determining the contact angle is done.
The purpose of this study was to characterize and study the contamination behavior of residual hydrocarbons and water vapor in a vacuum environment similar to that suited to the performance of EUV Lithography devices. A 50nm ruthenium film deposited on a silicon surface which served to simulate the Ru coated mirrors i…
Рассмотрены факторы, определяющие экологическую безопасность открытого стенда при сжигании твердотопливных зарядов энергетических установок с использованием водной экологической защиты. Предложена схема структурной формализации информационно-управляющей системы обеспечения и контроля уровня выбросов продуктов сгорания…
The multilayer ceramic capacitors (MLCCs) have been progressively miniaturized in recent years. In order to achieve high capacitance for a small size MLCC, the thickness of electrode and dielectric layer must be simultaneously decreased. However, the miniaturization of Ni–BaTiO3 multilayer ceramic capacitors (MLCCs) o…
The features of the microstructure of not hardenable aluminum-magnesium alloy, formed by friction stir welding are discussed. The morphology of the welded joint alloy near the interface of the base metal and weld was discussed. It is shown that as a result of friction stir welding a graded structure with ultrafine gra…
In 2006–2011 in water bodies of the tundra, forest tundra, forest and forest steppe belts of the West Siberian Plain, the species and coenotic composition of the hydrophilic coenoses involving 15 Zygnematales species were studied. The Zygnematales species were found to form seasonal synusiae and be a dynamic component…
Porous composite materials based on biodegradable polyhydroxybutyrate (PHB) and hydroxyapatite (HAP) were obtained by mechanical mixing and hot-pressing. Mechanical properties of materials were studied in tension and compression tests. Studies have shown that polymer nanocomposites of experimental samples PHB / HAP wi…
The results of theoretical investigations of stressed and deformed states inhomohenity throught the piped details thickness in the operation of isothermal reverse extrusion of anisotropic pieces in the mode of short durated creeping conditions are provided.
With the projected growth of the flexible and plastic electronics industry, there is renewed interest in the research community to develop high performance all-polymeric memory which will be an essential component of any electronic circuit. Some of the efforts in polymer memories are based on different mechanisms such…
The results of fatigue tests of cylindrical specimens with fillets of different radii to determine their fatigue limit under bending are analyzed using the method of finite element modeling. The peculiarities of surface hardening technological process have been taken into account.
Decorative concrete floor coatings Reno. Epoxy and Polyaspartic coatings for garage floors and concrete commercial properties.
On the base of statistical analysis of published data on the mechanical properties there established correlation relationships of tensile strength, elongation, necking with the chemical composition of titanium alloys of different classes.
Automobiles that are properly disposed under the automobile recycle law are further desired with enhancement in recycling. Especially enhancing reuse which lay in the superordinate concept of recycle, or in other words, promoting the spread of recycled parts is necessary. In this paper, we researched about the present…
Nowadays an actual problem in a foundry is the problem of resistance of foundry equipment. RP-modern technology can be used instead of technologies that are used now. Technology layering of ABS plastic is used to build a solid model mountings. The choice of this plastic as a material for foundry mountings showed a sig…
madeira, sendo um material higroscópico, tem suas propriedades mecânicas e elásticas afetadas por condições ambientais. Sendo assim, a relação de dependência de propriedades da madeira com a variação do teor de umidade tem merecido, há muito tempo, a atenção de pesquisadores de todo o mundo. Um dos grandes avanços na…
Ce travail de thèse a pour but la mise au point et l’optimisation d’un nouveau procédé de dépôt de couchesminces d’oxyde de zinc pour des applications photovoltaïques. Le principe de ce procédé, nommé « SprayPlasma », consiste à injecter un aérosol de microgouttelettes d’une solution aqueuse de nitrate ou chlorure dez…
Silk-elastin-like proteins (SELPs) combining the physicochemical and biological properties of silk and elastin have a high potential for use in the pharmaceutical, regenerative medicine and materials fields. Their development for use is however restrained by their production levels. Here we describe the production opt…
Increasing production efficiency in providing a certain level of quality products in a stable technological process is seen as an important scientific and technical challenge that is particularly important in the production of integrated elements. Production of integrated elements is a complex multifactorial and multi…