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ON DEPTH SENSING INDENTATION OF MATERIALS
68,00 € *
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Depth Sensing Indentation (DSI) is used in the mechanical characterization of bulk and coated materials. The finite element method is used to perform three-dimensional numerical simulations of Vickers hardness tests. The modelling and the optimisation of the more significant parameters in the simulation of this test are treated in detail. The load-unloading curves are carefully studied and the indentation geometry is related to the material mechanical properties. For the case of bulk materials, different reverse analysis methodologies for evaluate the stress-plastic strain curve from the load-unloading indentation curve, are presented. A detailed study of indentation geometry and stress and strain distributions is performed on coated materials. The determination of the Young's modulus in thin films is analysed with reference to different models. Also, a reverse analysis methodology is used for the determination of the Young's modulus of coatings.

Anbieter: Dodax
Stand: 20.01.2020
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ON DEPTH SENSING INDENTATION OF MATERIALS
70,00 € *
ggf. zzgl. Versand

Depth Sensing Indentation (DSI) is used in the mechanical characterization of bulk and coated materials. The finite element method is used to perform three-dimensional numerical simulations of Vickers hardness tests. The modelling and the optimisation of the more significant parameters in the simulation of this test are treated in detail. The load-unloading curves are carefully studied and the indentation geometry is related to the material mechanical properties. For the case of bulk materials, different reverse analysis methodologies for evaluate the stress-plastic strain curve from the load-unloading indentation curve, are presented. A detailed study of indentation geometry and stress and strain distributions is performed on coated materials. The determination of the Young's modulus in thin films is analysed with reference to different models. Also, a reverse analysis methodology is used for the determination of the Young's modulus of coatings.

Anbieter: Dodax AT
Stand: 20.01.2020
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Spatio-Temporal Data Analytics for Wind Energy ...
60,49 € *
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This SpringerBrief presents spatio-temporal data analytics for wind energy integration using stochastic modeling and optimization methods. It explores techniques for efficiently integrating renewable energy generation into bulk power grids. The operational challenges of wind, and its variability are carefully examined. A spatio-temporal analysis approach enables the authors to develop Markov-chain-based short-term forecasts of wind farm power generation. To deal with the wind ramp dynamics, a support vector machine enhanced Markov model is introduced. The stochastic optimization of economic dispatch (ED) and interruptible load management are investigated as well. Spatio-Temporal Data Analytics for Wind Energy Integration is valuable for researchers and professionals working towards renewable energy integration. Advanced-level students studying electrical, computer and energy engineering should also find the content useful.

Anbieter: Dodax AT
Stand: 20.01.2020
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Spatio-Temporal Data Analytics for Wind Energy ...
58,84 € *
ggf. zzgl. Versand

This SpringerBrief presents spatio-temporal data analytics for wind energy integration using stochastic modeling and optimization methods. It explores techniques for efficiently integrating renewable energy generation into bulk power grids. The operational challenges of wind, and its variability are carefully examined. A spatio-temporal analysis approach enables the authors to develop Markov-chain-based short-term forecasts of wind farm power generation. To deal with the wind ramp dynamics, a support vector machine enhanced Markov model is introduced. The stochastic optimization of economic dispatch (ED) and interruptible load management are investigated as well. Spatio-Temporal Data Analytics for Wind Energy Integration is valuable for researchers and professionals working towards renewable energy integration. Advanced-level students studying electrical, computer and energy engineering should also find the content useful.

Anbieter: Dodax
Stand: 20.01.2020
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Cargo Ship
39,00 € *
ggf. zzgl. Versand

A cargo ship or freighter is any sort of ship or vessel that carries cargo, goods, and materials from one port to another. Thousands of cargo carriers ply the world's seas and oceans each year, they handle the bulk of international trade. Cargo ships are usually specially designed for the task, often being equipped with cranes and other mechanisms to load and unload, and come in all sizes. Today, they are almost always built of welded steel, and with some exceptions generally have a life expectancy of 25 to 30 years before being scrapped.

Anbieter: Dodax
Stand: 20.01.2020
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Cargo Ship
40,10 € *
ggf. zzgl. Versand

A cargo ship or freighter is any sort of ship or vessel that carries cargo, goods, and materials from one port to another. Thousands of cargo carriers ply the world's seas and oceans each year, they handle the bulk of international trade. Cargo ships are usually specially designed for the task, often being equipped with cranes and other mechanisms to load and unload, and come in all sizes. Today, they are almost always built of welded steel, and with some exceptions generally have a life expectancy of 25 to 30 years before being scrapped.

Anbieter: Dodax AT
Stand: 20.01.2020
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Design and Fabrication of Equal Channel Angular...
29,98 € *
ggf. zzgl. Versand

"Equal Channel Angular Extrusion" (ECAE) is a significant method in industrial forming applications, which is the most important method for the production of ultrafine grained bulk samples, where plastic strains are introduced into the bulk material without any changes in the cross section. ECAE has different die channel angles from which an optimum die channel angle should be identified so that efficient mechanical properties will be obtained.This study is focused on the plastic deformation behavior of Al alloys by modeling ECAE with experimental and finite element software. A solid model was generated using CATIA. The STL files of ECAE die generated in CATIA were used in DEFORM-3D for simulations. The experiments are performed by designing the ECAE tools such as die, punch and billet. A series of numerical experiments were carried out for the die angles of 115°, 125°and 135° and outer corner angle of 6°, using a billet diameter of 9mm and a height of 70mm. A detailed analysis of the strains introduced by ECAP ("Equal Channel Angular Pressing") in a single passage through the die is noted. The experiments are conducted by attaching the ECAE tools to the Universal Testing Machine on aluminum alloy. The dimensions are followed for ECAE by taking considerations from the existing literature into account. On the basis of the experiment and simulation results, load, displacement, and punch force are evaluated and compared with each other.

Anbieter: Dodax AT
Stand: 20.01.2020
Zum Angebot
Design and Fabrication of Equal Channel Angular...
29,98 € *
ggf. zzgl. Versand

"Equal Channel Angular Extrusion" (ECAE) is a significant method in industrial forming applications, which is the most important method for the production of ultrafine grained bulk samples, where plastic strains are introduced into the bulk material without any changes in the cross section. ECAE has different die channel angles from which an optimum die channel angle should be identified so that efficient mechanical properties will be obtained.This study is focused on the plastic deformation behavior of Al alloys by modeling ECAE with experimental and finite element software. A solid model was generated using CATIA. The STL files of ECAE die generated in CATIA were used in DEFORM-3D for simulations. The experiments are performed by designing the ECAE tools such as die, punch and billet. A series of numerical experiments were carried out for the die angles of 115°, 125°and 135° and outer corner angle of 6°, using a billet diameter of 9mm and a height of 70mm. A detailed analysis of the strains introduced by ECAP ("Equal Channel Angular Pressing") in a single passage through the die is noted. The experiments are conducted by attaching the ECAE tools to the Universal Testing Machine on aluminum alloy. The dimensions are followed for ECAE by taking considerations from the existing literature into account. On the basis of the experiment and simulation results, load, displacement, and punch force are evaluated and compared with each other.

Anbieter: Dodax
Stand: 20.01.2020
Zum Angebot
Soft Tissue Diode Laser - Adjunct To Non-Surgic...
51,30 € *
ggf. zzgl. Versand

Several different lasers have since been used in periodontics such as CO2, Nd: YAG, ER: YAG, Cr:YSGG etc. More recently, Diode Laser (GaAlAs)has been used in treatment of chronic periodontitis. One of the advantages of diode lasers in comparison to other laser systems, which is immediately apparent to the naked eye, is their size. The development of microstructure diode cells which are capable of emitting laser light has drastically reduced the bulk of laser systems. Diode laser has curettage and bio-stimulating effect. This eliminates the sulcular epithelium infected in a total and complete way than conventional methods of treatment, without any kind of damage to the underlying connective tissue and reducing the bacterial load, which easily penetrate within the sulcular epithelium. So, the aim of the present study was to evaluate and compare the effectiveness of diode laser (940nm) as an adjunct to non-surgical periodontal therapy in the management of patients with chronic periodontitis.

Anbieter: Dodax AT
Stand: 20.01.2020
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