The Experts below are selected from a list of 274779 Experts worldwide ranked by ideXlab platform
Ildus Sayakhov - One of the best experts on this subject based on the ideXlab platform.
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Review of the Application of Composite Materials in Electrical Machines
International Review of Electrical Engineering (IREE), 2020Co-Authors: Flur Ismagilov, Viacheslav E. Vavilov, Nikita Uzhegov, Ildus SayakhovAbstract:This paper describes typical Composite Materials that are already used or can be used in the components of electrical machines. In the presented review of Composite Materials, their main advantages and limitations are identified. Specific examples of the use of Composite Materials in electrical machines are given. This article also studies the feasibility and the fundamental possibility of creating an electrical machine for microturbines entirely composed of Composite Materials. For this purpose, electromagnetic and thermal analyses using finite element methods have been performed. According to the results of these analyses, a comparison of the characteristics of an electrical machine is made consisting of traditional Materials and electrical machines partly or fully consisting of Composite Materials. As a result, proposals are formed on the prospects for the use of Composite Materials in electrical machines. The main contribution of this article in the field of design and creation of electrical machines is the synthesis of data on Composite Materials used in electrical machines, as well as the demonstration of the prospects of an electrical machine entirely composed of Composite Materials.
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Diagnostics of Composite Materials in Electrical Machines
Electrotechnical Systems and Complexes, 2019Co-Authors: Flur Ismagilov, Viacheslav E. Vavilov, Ildus SayakhovAbstract:Products made of Composite Materials are widely used due to their strength and stiffness characteristics as well as corrosion resistance. However, in the course of operation, microdamages accumulate in Composite Materials, which, over time can lead to a loss of design performance. Various defects appear in the manufacture of Composite Materials. Since the destruction of Composite Materials is studied in less detail than metals, their use in products with increased requirements for reliability is associated with some degree of risk. To meet the high demands on reliability, it is necessary to apply modern methods of non-destructive testing, which allow identifying existing internal defects, localizing their position and determining linear geometric dimensions. Most of the traditionally used methods of non-destructive testing have certain disadvantages, which often make it impossible to obtain high-quality and most complete information about the defects. Composite Materials are also becoming more widely used in electrical machines, which allows them to increase their specific characteristics. In electrical machines, the most loaded units are the shaft, the rotor banding, the stator teeth and bearing units. Therefore, the use of Composite Materials in these sites requires the creation of diagnostic systems to determine the residual resource and prevent accidents. This paper presents methods for non-destructive testing of products made of Composite Materials. The main advantages and disadvantages of each method are given. The article also presents the developed method of eddy current testing for the carbon fiber rotor banding.
K Hatakeyama - One of the best experts on this subject based on the ideXlab platform.
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high frequency permeability of ferromagnetic metal Composite Materials
Journal of Magnetism and Magnetic Materials, 2007Co-Authors: T Kasagi, Takanori Tsutaoka, Shoichi Suenaga, K HatakeyamaAbstract:Abstract Complex permeability ( μ * = μ ′ - i μ ″ ) spectra of ferromagnetic metal (cobalt and permalloy) granular Composite Materials have been studied in the microwave frequency range. High surface electrical resistance in ferromagnetic metal particles can be obtained by the heat-treatment; the eddy current effect in high frequency permeability is suppressed in the high particle content Composite Materials. The 70 vol.% permalloy and 79 vol.% cobalt Composite Materials containing the heat-treated particles have a negative and zero permeability at several GHz, respectively.
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frequency dispersion of permeability in ferrite Composite Materials
Journal of Magnetism and Magnetic Materials, 1994Co-Authors: Tatsuya Nakamura, Takanori Tsutaoka, K HatakeyamaAbstract:Abstract Permeability spectra of Ni-Zn ferrite Composite Materials, prepared by mixing the ferrite particles with EVA resin, have been studied. In the sintered ferrite (volume fraction 1.0), the spin resonance is around 9 MHz and the static permeability about 1400. As the ferrite content decreases (Composite Materials), the static susceptibility of the spin component decreases and the spin resonance frequency shifts higher. The real part of the permeability in the ferrite Composite Materials becomes larger than that of the sintered ferrite in the rf frequency region. These features have been analyzed using the magnetic circuit model. The application of Snoek's limit extended to ferrite Composite Materials is also proposed.
Flur Ismagilov - One of the best experts on this subject based on the ideXlab platform.
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Review of the Application of Composite Materials in Electrical Machines
International Review of Electrical Engineering (IREE), 2020Co-Authors: Flur Ismagilov, Viacheslav E. Vavilov, Nikita Uzhegov, Ildus SayakhovAbstract:This paper describes typical Composite Materials that are already used or can be used in the components of electrical machines. In the presented review of Composite Materials, their main advantages and limitations are identified. Specific examples of the use of Composite Materials in electrical machines are given. This article also studies the feasibility and the fundamental possibility of creating an electrical machine for microturbines entirely composed of Composite Materials. For this purpose, electromagnetic and thermal analyses using finite element methods have been performed. According to the results of these analyses, a comparison of the characteristics of an electrical machine is made consisting of traditional Materials and electrical machines partly or fully consisting of Composite Materials. As a result, proposals are formed on the prospects for the use of Composite Materials in electrical machines. The main contribution of this article in the field of design and creation of electrical machines is the synthesis of data on Composite Materials used in electrical machines, as well as the demonstration of the prospects of an electrical machine entirely composed of Composite Materials.
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Diagnostics of Composite Materials in Electrical Machines
Electrotechnical Systems and Complexes, 2019Co-Authors: Flur Ismagilov, Viacheslav E. Vavilov, Ildus SayakhovAbstract:Products made of Composite Materials are widely used due to their strength and stiffness characteristics as well as corrosion resistance. However, in the course of operation, microdamages accumulate in Composite Materials, which, over time can lead to a loss of design performance. Various defects appear in the manufacture of Composite Materials. Since the destruction of Composite Materials is studied in less detail than metals, their use in products with increased requirements for reliability is associated with some degree of risk. To meet the high demands on reliability, it is necessary to apply modern methods of non-destructive testing, which allow identifying existing internal defects, localizing their position and determining linear geometric dimensions. Most of the traditionally used methods of non-destructive testing have certain disadvantages, which often make it impossible to obtain high-quality and most complete information about the defects. Composite Materials are also becoming more widely used in electrical machines, which allows them to increase their specific characteristics. In electrical machines, the most loaded units are the shaft, the rotor banding, the stator teeth and bearing units. Therefore, the use of Composite Materials in these sites requires the creation of diagnostic systems to determine the residual resource and prevent accidents. This paper presents methods for non-destructive testing of products made of Composite Materials. The main advantages and disadvantages of each method are given. The article also presents the developed method of eddy current testing for the carbon fiber rotor banding.
Roberto Teti - One of the best experts on this subject based on the ideXlab platform.
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Composite Materials parts manufacturing
CIRP Annals, 2018Co-Authors: Jürgen Fleischer, Roberto Teti, Gisela Lanza, Paul Mativenga, Hans-christian Möhring, Alessandra CaggianoAbstract:Abstract Composite Materials parts manufacturing is based on the interactions of simultaneous as well as consecutive process steps. These influence the Composite part properties and economical production. A wide range of possible Composite Materials and processing technologies necessitate a holistic view of the product life cycle to ensure the best possible economic and ecological outcome. Current studies on new manufacturing and machining processes aim for higher productivity and machinability, whereas new quality control approaches are enhancing the desired product quality. Furthermore, recent research addressing joining concepts and recycling methods has a huge impact on competitiveness and sustainability. Focusing on latest academic research approaches and current industrial application fields, this paper gives an overview of various process steps in the overall product life cycle of Composite Materials parts manufacturing.
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Machining of Composite Materials
CIRP Annals - Manufacturing Technology, 2002Co-Authors: Roberto TetiAbstract:Machining of Composite Materials is difficult to carry out due to the anisotropic and non-homogeneous structure of Composites and to the high abrasiveness of their reinforcing constituents. This typically results in damage being introduced into the workpiece and in very rapid wear development in the cutting tool. Conventional machining processes such as turning, drilling or milling can be applied to Composite Materials, provided proper tool design and operating conditions are adopted. An overview of the various issues involved in the conventional machining of the main types of Composite Materials is presented in this paper.
Alessandra Caggiano - One of the best experts on this subject based on the ideXlab platform.
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Machining of Fibre Reinforced Plastic Composite Materials.
Materials, 2018Co-Authors: Alessandra CaggianoAbstract:Fibre reinforced plastic Composite Materials are difficult to machine because of the anisotropy and inhomogeneity characterizing their microstructure and the abrasiveness of their reinforcement components. During machining, very rapid cutting tool wear development is experienced, and surface integrity damage is often produced in the machined parts. An accurate selection of the proper tool and machining conditions is therefore required, taking into account that the phenomena responsible for material removal in cutting of fibre reinforced plastic Composite Materials are fundamentally different from those of conventional metals and their alloys. To date, Composite Materials are increasingly used in several manufacturing sectors, such as the aerospace and automotive industry, and several research efforts have been spent to improve their machining processes. In the present review, the key issues that are concerning the machining of fibre reinforced plastic Composite Materials are discussed with reference to the main recent research works in the field, while considering both conventional and unconventional machining processes and reporting the more recent research achievements. For the different machining processes, the main results characterizing the recent research works and the trends for process developments are presented.
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Composite Materials parts manufacturing
CIRP Annals, 2018Co-Authors: Jürgen Fleischer, Roberto Teti, Gisela Lanza, Paul Mativenga, Hans-christian Möhring, Alessandra CaggianoAbstract:Abstract Composite Materials parts manufacturing is based on the interactions of simultaneous as well as consecutive process steps. These influence the Composite part properties and economical production. A wide range of possible Composite Materials and processing technologies necessitate a holistic view of the product life cycle to ensure the best possible economic and ecological outcome. Current studies on new manufacturing and machining processes aim for higher productivity and machinability, whereas new quality control approaches are enhancing the desired product quality. Furthermore, recent research addressing joining concepts and recycling methods has a huge impact on competitiveness and sustainability. Focusing on latest academic research approaches and current industrial application fields, this paper gives an overview of various process steps in the overall product life cycle of Composite Materials parts manufacturing.
