für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El aligeramiento de peso es un problema común en todos los sistemas mecánicos, y la búsqueda de soluciones en este aspecto involucra beneficios económicos y constructivos. Los reductores mecánicos son herramientas comúnmente utilizadas para la transmisión de potencia en la industria, constantemente están sometidos a grandes esfuerzos pero a la vez deben ser livianos para acomodarse a las necesidades del medio y uso eficiente de material. El objeto de este libro es determinar el grado de incidencia que presenta la utilización de arboles o ejes de transmisión huecos en la compacidad (Relación Potencia / Peso del reductor), verificando la incidencia que tendrá el aligeramiento de peso en los arboles de salida, sobre los demás elementos que componen un reductor mecánico, debido al cambio geométrico. De esta manera determinar la pertinencia de su uso y como se verá afectada la carcasa desde el punto de vista de la resistencia mecánica. ····· 10361137137
für 62.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Este libro plantea un modelo de configuración de la planta de un astillero enfocado a la construcción del casco de buques de crucero. Partiendo de un análisis del mercado de cruceros, así como de las instalaciones existentes en una serie de astilleros europeos especializados en cruceros, estudia las modificaciones que habría que introducir en la planta de un astillero construido en los años 70, para conseguir una disposición final adecuada a los procesos constructivos del acero de estos buques. Mediante la filosofía de construcción denominada tecnología de grupos se consigue, en una producción unitaria como es la construcción del buque, una normalización propia de la producción en serie. Aplicando esta doctrina, se descompone el buque en productos intermedios, con características de diseño y construcción similares, a fin de conseguir una estandarización y un efecto serie en productos que, en sentido estricto, no pueden ser catalogados así. La implantación de una producción en serie en un astillero va a posibilitar la utilización de líneas de proceso, las cuales, además, constituyen una de las configuraciones idóneas para lograr los postulados que pretende la gestión lean . ····· 10361136980
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Desde que las sillas de ruedas aparecieron se han realizado un numero reducido de cambios en su diseño básico. Un importante hito ha sido la aparición de sillas de ruedas eléctricas debido a que han mejorado de forma incuestionable la movilidad de personas con discapacidad motora. Sin embargo, estos dispositivos presentan problemas cuando aparecen barreras arquitectónicas que en la mayoría de las ocasiones son imposibles de eliminar. La resolución de este problema potencia la investigación y desarrollo de nuevos dispositivos motorizados que sean capaces de afrontar con éxito este tipo de situaciones y así devolver a las personas con discapacidad motora esta parte de sus derechos humanos (el que se refiere a la libertad de desplazarse). En este trabajo se describen los dispositivos mecánicos, modelos cinemáticas y los algoritmos de control de una nueva generación de dispositivos robotizados con capacidad de superación de barreras arquitectónicas tales como bordillos, rampas o escaleras. Además, se incluyen resultados experimentales para dar respaldo a los resultados teóricos desarrollados. ····· 10361136304
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This work develops and analyzes optimization technique for obtaining a geometry shape of classical HAWT blades based on set of criteria. It allows designer to determine the weight of such factors as power coefficient, sound pressure level and cost function in the overall process of blade shape optimization. Optimization method applies Desirability function. It was never used before in that kind of technical problems, and in this sense it can claim to originality of research. To do analysis and optimization processes more convenient the software application was developed. ····· 10361136021
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Machine tools and practice is based on certain mechanical principle that are essential to all machine shop work everywhere .These are the principle of operation of machine tools and function of each part .This include method of holding and doing the work, the operation of cutting tools, tool geometry, cutting speed and feed and method of tool sharpening. This book provides the principle involved in the machining of metal and application of these principle to machine such as lathe, drill, milling, grinding. This book can serve a guide to shop practice .With this help ,the student in machine shop can gain the working knowledge of the principle of machine work. They will acquire skill in machine work by studying how and why certain operations are done. ····· 10361135990
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray An experimental investigation of surface static pressure distributions on hexagonal cylinder was conducted. The study was performed on both the single cylinder and the group consisting of two cylinders, one in the upstream and another in the downstream side. The test was conducted in an open circuit wind tunnel at a Reynolds number of 41300 based on the face width of the cylinder across the flow direction in a uniform flow of velocity 13.2 m/s. The study was done on the single cylinder at various angles of attack from 0 to 50 degree at a step of 10 degree. The surface pressure distributions were measured with the help of an inclined manometer. Then the group of two cylinders was taken into consideration for the study and the surface static pressures were measured for various interspacing of 1D, 2D, 3D, 4D, 6D & 8D, D being the width of the cylinder across the flow direction. In each case the wind velocity was kept constant at 13.2 m/s. The pressure coefficients were calculated from the measured values of the surface static pressure distributions on the cylinder. Finally the drag and lift coefficients were obtained from the pressure coefficients by the numerical integration method. ····· 10361135974
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The book focuses the rough piston skirts and liner surfaces and to incorporate these aspects in two dimensional hydrodynamic and elastohydrodynamic lubrication (EHL) of piston skirts in the initial engine start-up. This research work considers the deterministic roughness asperity with the average flow factor method.The randomly generated surface with deterministic asperity is modelled for piston skirt EHL. For this developed model, parametric studies on the salient features like the engine start-up speed,hydrodynamic load, radial clearance, and viscosity of lubricant, is undertaken. ····· 10361135947
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Economical and effective damping system is the need of modern competitive industry to improve performance of the products in terms of comfort level, durability, etc. by minimizing vibrations. This motivated researchers to explore the advanced semi-active damping systems. The present work is focused on theoretical and experimental analysis of one of the semi-active systems, Magneto-Rheological (MR) fluid dampers. The study is initiated by a parametric study to understand the influence of various design variables on the performance parameters of a damper. To avoid the problem of local minima, an evolutionary algorithm, GA is used for optimal design. Further, 2D axisymmetric MR damper model is developed using FEM to study the magnetic properties in the fluid gap for different current inputs to the coil. Furthermore, the use of MR damper for vehicle vibration reduction is demonstrated using SIMULINK models of a typical vehicle and dynamic model of MR damper. Finally, experimental work on MR fluid, MR damper and quarter-car models with MR damper is carried out. Book is useful for academics, industry and research. ····· 10361135912
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Low grade iron ores with impurity gangue minerals must be upgraded to an acceptable level of iron content. Fine-sized concentrates are not suitable to be directly used in the iron-making facilities. Hence, an agglomeration technique should be applied and the most commonly employed method is pelletization. In pelletization, iron ore, water and a binder are balled in a mechanical disc or drum to produce agglomerates. Bentonite is the most widely used binder. However, it is considered as an impurity due to its high silica and alumina contents. Many researchers have investigated different binders, mostly of organic origin, to find a viable alternative binder to bentonite. Organic binders were found to yield good quality green and dry pellets. However, they fail to impart enough strength to the preheated and fired pellets. Boron compounds free of silica and alumina are thought to be a potential solution to overcome the lack of slag forming constituents encountered with organic binders as they have low melting temperatures and ability to lower the melting temperatures of silicates. This book covers the promising results of boron compounds as binder in iron ore pelletization. ····· 10361135791
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book basically covers analysis of anti-friction bearings and lubricants under electric current in 9 Chapters including that of threshold voltage phenomenon, start/stop characteristics, electrical parameters of bearings, capacitive effects, deterioration of lubricants, and bearing failure under shaft voltages. Theoretical procedure to establish, capacitance, resistance, capacitive reactance, impedance, pitch of corrugations, and charge accumulation on surfaces of bearings is given that originates the new methodology for the diagnosis of bearings. Also, the decrease in life span of bearings, lubricant resistivity, recovery/recouping of resistivity under the influence of different levels of voltages has been established. The dynamic coefficients of anti-friction bearings have been determined using an electrical analogy approach beside determination of minimum cycles before craters and corrugations are formed on the active surface of bearings. ····· 10361135633
für 64.71€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The book contains original data on the design, manufacture and testing of reinforced resins with various fiberglass and/or wire mesh type of composite materials and is addressed to the specialists in the field as well as to students from the technical faculties specialized in materials engineering. ····· 10361135578
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The use of portable electronic devices is increasing every day and will continue to increase in the perceivable future. Its development is, however, hindered by the finite energy source, namely the battery. Moreover, huge amount of disposed batteries creates a big burden to our fragile environment. Thus, it has become necessary to find alternative power source, or at least supplementary power source. Analysis shows that it is the human motion that is the most suitable energy source for portable electronics. This book explores the feasibility of harvesting human kinetic energy to power portable electronics. The study is based mainly on the mechanical oscillating mechanism and electromagnetic transduction. Comparing to the existing work on harvesting human kinetic energy, this book focuses on the feasibility, effectiveness and convenience. The main contributions of the book are the design and analysis of four different types of energy harvesters. ····· 10361135558
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In this era of think small or think big one would instinctively simply scale down or scale up the size of all machineries to a device to make it small or big.It is true that nothing is there to stop one from downsizing or amplifying the device components to make the device undersized or oversized. Some serious fall out wiill be there of scaling down or scaling up many physical quantities.This book will present, with selected cases,the scaling laws that will make engineers aware of both positive and negative physical consequences of scaling down or scaling up machines and devices.Miniaturizing or amplified machines and physical systems is an ongoing effort in Human civilization.This endeavor has been intensified in recent years as market demands for: Intelligent,Multi-functional and Low cost consumer products has become stronger than ever.The only answer to produce these consumer products is either to wrap up many components into the product making it obligatory to miniaturize each individual component or make it amplified with gigantic construction.Miniaturization or amplification of physical systems is a lot more than just scaling down or scaling up device components in sizes. ····· 10361135465
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book is written to meet the objectives of graduates and undergraduates students. It includes various measuring instruments including calibration procedures, technical manuals, and measurement analytical studies. It imparts the basic knowledge about different measuring instruments and their application procedures in real time practice world. This includes basic as well as advanced measureing techniques with latest instruments ····· 10361134569
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray A book provides an an introduction to composite materials as well as detailed description of failure theories and damage modeling techniques for the failure analysis of composite laminates. More specifically, the book presents the implementation of modeling strategies for the progressive failure analysis of double-notched composite laminates. Different composite layups with carbon/epoxy and glass/epoxy materials are experimentally and numerically investigated. This book may be useful for students or engineers who are interested in learning damage analysis of composite materials. ····· 10361134537
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The main objective of the present work is to design a set up for carrying out a parametric analysis of a dual-mode spray cooling in a laboratory prior to the industrial implementation of a compact heat-treatment system for imparting a dual-phase micro-structure to the treated steel sheet. Within the scope of the present work the following objectives are aimed towards: 1. Design of an electro-hydraulically actuated laboratory-scale process line involving a bay extending from the furnace up to the spraying system, a sample-holding system. 2. Selection and design of the electro-hydraulic actuation system to meet the desired speed of reciprocation. 3. Performance analysis through modeling and simulation of the actuation system in Matlab/Simulink. 4. Preliminary design of a closed loop control if necessary. ····· 10361134517
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Sheet metal forming that incorporates an incremental approach has demonstrated a great potential to form a wide range of industrial products. The majority of the previous research on conventional spinning has focused on the first pass, clearly, the effect of subsequent roller passes on the deformation mechanics needs more attention. Statistical methods such as Design of Experiment (DOE) and Analysis of Variance (ANOVA), which can be used to identify the most critical working parameters and their optimal setting, are rarely used in conventional spinning practice, but have great potential for this type of process. Although Single Point Incremental Forming (SPIF) processes have potential application areas, the process is still not widely applied in industry. There are many gaps in existing knowledge of the processes. An understanding of the process mechanics is limited. The higher formability associated with SPIF processes is an area where different ideas and explanations are given. Additionally, the geometrical accuracy resulting from SPIF is not good enough, and is regarded as unacceptable for some applications. These issues are addressed in the present study. ····· 10361134510
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In this study, several numerical experiments are performed through the use of ReConAn Finite Element Analysis (FEA) software. These experiments involve the numerical assessment of the nonlinear behavior of reinforced concrete (RC) structures under limit state loading. The main objective of this research work, is the development of an object-oriented FEA code (ReConAn FEA), capable of easily incorporating advanced numerical techniques and modeling methods for the analysis of RC structures through the use of state-of-the-art programming techniques. An excessive literate and numerical research is presented on different methodologies and numerical methods used for the analysis of RC structures. This research reveals the advantages and disadvantages that each numerical method has, through which the proposed Hybrid modeling (HYMOD) approach derived. The HYMOD foresees the combination of beam and hexahedral elements so as to discretize the geometry of any RC building. This is performed in order to decrease the computational demands of the resulted numerical model but at the same time maintain the required numerical accuracy during the nonlinear solution procedure. ····· 10361134497
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray System engineering principles suggest that the best design is one that can maximize the system effectiveness and minimize the total cost of ownership.Superior product performance, quality and reduced cost of ownership are the results of effective, efficient engineering and design. If the engineer is to control the cost and performance of the product, its is essential to understand the impact of parameters of various costs incurred during the life time and reliability of the product on total cost ownership. This research study emphasize a methodological framework for the designers and manufacturers to provide a more realistic approach to evaluate the actual cost, warranty period and the required number of available spares during the warranty period with enhanced customer satisfaction. ····· 10361134469
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The flow behavior of liquid fuel through injectors greatly affects its atomization and combustion efficiency inside an engine. A computational fluid dynamics (CFD) model is developed using the open source CFD library OpenFOAM to predict the fuel flow in injectors that are used in the gasoline direct injection systems (GDI). Additionally, a method is formulated to couple this model with fluids that represent the physical properties of gasoline-ethanol blends like E85. ····· 10361134457
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Several approaches are explored and developed to improve the contouring accuracy in CNC machines. A tuning procedure is proposed to tune the gains so as to achieve matched axial dynamics. The contouring accuracy for both linear and circular contours can be significantly improved. For circular contours, the radial errors resulting from the limited bandwidth of the axial dynamics can be further reduced by feedforward compensation. A two-stage stiction compensation scheme is proposed to reduce or eliminate the contour errors caused by stiction. A model-based Taylor series expansion error compensation (TSEEC) approach formulates the contour error as a Taylor series expansion around points along the desired path and compute compensation components as deviations from these points. Finally, an integral sliding mode control (ISMC) approach, due to its robustness against model uncertainties and external disturbances, is developed to improve the tracking accuracy for each individual axis, thus the overall contouring accuracy. ····· 10361134285
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The vast majority of products and processes in industry and academia require human interaction. Thus, digital human models (DHMs) are becoming critical for improved designs, injury prevention, and a better understanding of human behavior. Although many capabilities in the DHM field continue to mature, there are still many opportunities for improvement, especially with respect to posture- and motion-prediction. Thus, this work investigates the use of artificial neural network (ANN) for improving predictive capabilities and for better understanding how and why human behave the way they do. ····· 10361134278
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The work presents the development of an aircraft Braking Control System Hydraulic model for a real time simulation application. The tool used is Simscape, an object oriented tool which supports the engineer in analysing systems behaviour by representing physical systems in virtual models. The model is a development of a complex non-real time model built in LMS Amesim. A process of simplification and validation in order to reach high reliability, stability and real-time simulation capabilities has been applied. The process starts with the validation of single components and ends with the modelling of the whole system. Particular attention and time have been spent on the creation and the validation of the servovalves, which were designed from very complex Amesim component models only available as non accessible `black-boxes`. The purpose of the work is to develop a model running with the specified time-characteristic in order to be implemented in a test platform, where the whole Landing Gear system can be tested. The book is suitable for engineers who are involved in the development of real-time systems or in working out the inside structure of non-accessible models. ····· 10361134276
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Supply chain management aims to add value across the supply chain and customer service is a major strategic issue. Supply chains are complex and subject to variables of forecast, supply, process, and transportation which can lead to problems such as the bull whip effect, product lateness, damaged goods and stock outs. A key issue is how to monitor and control performance across the chain and meet customer s needs. In this work an order fulfillment model using Design for six sigma, which focuses on customer requirements from design onset and fuzzy logic, which accounts for the variable supply chain environment, is presented. By applying the model in a case study, a representation of detailed activities of order fulfillment processes is demonstrated providing key internal and external performance indicators. A theoretical transfer function for predicting the performance of the perfect order incorporating fuzzy set theory provides a way of monitoring supply chain performance. This is an effective way to monitor and control order fulfillment variables, optimise the order fulfillment process, meet customer requirements and make incremental step towards supply chain integration. ····· 10361134200· 1 · ::::: · 12 ·· 13 ·· 14 ·· 15 ·· 16 ·· 17 ·· 18 · ::::: · 83 ·
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