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۱Machining of Thermosetting Composites by Means of Milling and Drilling
اطلاعات انتشار: World Applied Sciences Journal، بيست و ششم،شماره۹، ۲۰۱۳، سال
تعداد صفحات: ۵
Polymer composites are widely spread in machinery, construction activity, incl. production of wear plates and items of fitting systems. In process of manufacturing items from composites, the products must be machined by tools and cutters. During cutting, with mechanical and thermal loads applied, the destruction of composites takes place to deteriorate quality of products. To increase quality of products, the procedures of cutting modes calculation should be developed with introduction of correction factors considering specific properties of polymers, as well as their optimization with usage of multi–criteria methods.

۲Parameterization of Microstructures in Material Science and Material Technology
اطلاعات انتشار: World Applied Sciences Journal، بيست و ششم،شماره۹، ۲۰۱۳، سال
تعداد صفحات: ۳
The article deals with possible applications of multi–fractal parameterization of microstructures (MFP) fields of material science and welding. MFP is successfully used for fine selection of microstructures, specification of thermal treatment modes and others. Experimental data were recorded for samples manufactured from steels of austenitic class. The research also comprises data on dependence of grain size upon multi–fractal parameters of uniformity and orderliness got by other authors. The study suggests algorithm of predicting Vickers hardness on basis of multi–fractal parameterization of metallographic specimen by means of calculating the parameters of uniformity and orderliness. Program created on basis of algorithm allows analyze microstructure to determine the grain size.

۳The Influence of Mineral Fillers on Mechanical Properties of Polyvinyl Chloride Composites
اطلاعات انتشار: World Applied Sciences Journal، بيست و هشتم،شماره۲، ۲۰۱۳، سال
تعداد صفحات: ۴
The paper reports the investigation results of tensile stress–strain properties of filled PVC composite during static and low cycle testing. The distinctive features of composite mechanical behavior depending on the content of dispersed mineral fillers which are basically industrial waste are established. It is revealed that small filler additives have a strong influence on the structural behavior that manifest itself as their abnormal change depending on the filler content. The experimental data obtained are explained based on the modern ideas about structural morphological model of base polymer structure.

۴Light–Reflecting Coatings on the Basis of Polymeric Powder Compositions and Micro Spheric Reflectors
اطلاعات انتشار: World Applied Sciences Journal، بيست و نهم،شماره۴، ۲۰۱۴، سال
تعداد صفحات: ۵
Tailored compositions and the structure of light–reflecting coatings with the use of thermosetting polymeric powder compositions and micro–spheric reflectors on the basis of inorganic glass are developed. In order to get light–reflecting coatings with the preset complex of optical and physical– chemical figures wedeveloped technological process. The technological process of powder compositions application and coating formation is carried out with the help of the specialized equipment complex. We defined the basic optical properties of the coatings and optimum operating parameters of their derivation. We developed optico–physical model of multilayer filled coating structure considering the optical and other characteristics of the components which form the coating.

۵Special Aspects of Preparation of Microstructure Images for Parametrization of Welding Joints
اطلاعات انتشار: World Applied Sciences Journal، بيست و نهم،شماره۴، ۲۰۱۴، سال
تعداد صفحات: ۴
The paper discusses the implementation areas of multifractal parameterization of microstructures for metallurgy and welding purposes. The objects of investigation are welds made by argon arc welding in the austenitic steel parts. Radiographic, spectral, microstructure analysis, parameterization of microstructures and Vickers hardness test were used. The design data were acquired with MFRDrom software on the basis of the analysis of microstructure images of welding joints made from austenitic steel. It was determined how the preparation defects of thin sections (grind and polish marks) and welding defects such as pores, cracks, influence the results of parameterization of welding joint microstructures. The relations between hardness and multifractal parameters of uniformity and orderliness were established.

۶Influence of Particulate Fillers on Complex of Dielectric Properties of Rigid and Plasticized PVC Compositions
اطلاعات انتشار: World Applied Sciences Journal، بيست و نهم،شماره۵، ۲۰۱۴، سال
تعداد صفحات: ۴
The article discloses efficiency of modifying the polyvinyl chloride by organic and mineral fillers being the wastes of various industrial productions. Main dielectric properties of rigid and plasticized compositions were examined, for different combinations and ratios of modifying additives. The article displayed how the particulate fillers nature and composition influence on character and intervals of dielectric behavior modification. The results of researches were interpreted with consideration of structural morphological composition of polyvinyl chloride, of modifying additives’ nature, content and ratio.

۷Temperature Change Calculation at Welding Products
اطلاعات انتشار: World Applied Sciences Journal، سي ام،شماره۱۰، ۲۰۱۴، سال
تعداد صفحات: ۴
Thermal calculation of the welded seams was conducted, made from heat resisting austenitic steel 10X11H20T2P by argon–arc welding. Schedules of temperature increment are constructed during various time moments on mode parameters existing on technology manufacture and on offered welding conditions. Structure forecasting opportunity and mechanical properties of welded connection various zones is shown: a welded seam, weld lines, zones of thermal influence and basic metal by calculation of temperature field changing in time. Calculation data are received at use of standard methods of calculation and under general formulas. Basic methods of experimental temperature test are considered at welding and computer application in calculations of temperature fields. Recommendations are given at the welding modes choice for prevention of hot cracks formation, namely, welding speed reduction up to 6 km\h is recommended.
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