für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In the 1980 s, the issue of Quality Control (QC) became a national concern in the United States. Quality is a challenge that must be taken up by Quality Engineer. The Quality Engineer needs a thorough knowledge of the Statistical Methods to control the quality. The object of this book is to enrich the knowledge of Quality Engineer in Statistical Methods of Quality Control. In this Text Book basic statistical methods are addressed it include those associated with statistical process control and capability analysis. The book gives some background of process control, explains several important concepts such as special and common causes of variation, and introduces the control chart, a very effective tool for process control. The book also describes the construction and use of control charts for variables data (quantitative data, or measurements) - X-bar & R charts, X & MR charts, median charts. ····· 1036191991
für 49.41€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Electrochemical machining of internal conical shape (ECMICS) is one of non-conventional machining processes. The main application of ECMICS is for making small, accurate and high surface finish internal tapers for many applications such as the orifice of the fuel injectors and the hard metal which cannot be machined by any other machining process. A laboratory for ECMICS was started in Minia Univ. comprising principally of electrochemical machining unit with the necessary instruments. Sodium Chloride solution of 200 gm/liter concentration was selected as a working electrolyte Specimens were subjected to practical trials to explore the various operating parameters governing the process and their relations. This book shows the optimum conditions for ECMICS. Furthermore, it gives a helpful guide for the scientific researchers and the industrial units to optimize their experiments and decrease the production costs through many estimated-parameters and results- relations which could be applied in many fields. ····· 1036191915
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Supply chain management is increasingly becoming a vital subject among modern managerial method since it reduces operational costs, improves delivery performance and increases customer satisfaction. Delivery performance is the key measure of supply chain performance and is measured by verifying how many lots or order lines are received as promised. In Aerospace industry on time delivery is essential because the cost of non-availability is huge when compare to other industries. The key objective of this project was to improve the line delivery performance of Cargo Systems , that analyzes demand variability, lead time variability, inventory costs and service level. In addition to that appropriate techniques were adapted to issue the oldest product in the stock first (a First-In-First-Out approach). Visual control techniques were employed to improve the inventory visibility and reduce ageing of chemical parts. To monitor employee performance in stores a performance analysis system has been implemented. ····· 1036191861
für 79.00€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The natural convection thermal boundary layer adjacent to an inclined flat plate and inclined walls of an attic space subject to instantaneous and ramp heating and cooling is investigated. A scaling analysis has been performed to describe the flow behaviour and heat transfer. Major scales quantifying the flow velocity, flow development time, heat transfer and the thermal and viscous boundary layer thicknesses at different stages of the flow development are established. Scaling relations of heating-up and cooling-down times and heat transfer rates have also been reported for the case of attic space. The scaling relations have been verified by numerical simulations over a wide range of parameters. Further, a periodic temperature boundary condition is also considered to show the flow features in the attic space over diurnal cycles. ····· 1036191691
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray To achieve manufacturing excellence , Companies must exploit all available Decision support systems to supplement production planning for greater productivity. Since levels of productivity and pro tability should be the major indices for sustainability in today s dynamic and competitive environment, techniques like SMED offer a great potential to reduce product CT and so aid competitiveness. To make such improvements, industrial engineering tools like time study, Pareto charts, cause and effect analysis, cost - bene t techniques, etc. can be used to identify required changes, eliminations and externalizations of set up activities and then more re ned set-ups can be developed to save production time. The following points were concluded from the project: 1.Flexible man power technique plays major role in operator involvement during Changeover period which builds machine ownership culture. 2.Cross functional team working helps in proper data collection, analysis and to find low cost optimum solution. 3.In case of Rush orders, Set up time should be minimum since it is considered one among 7 big losses. ····· 1036191686
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Due to highly competitive global markets, the breakdown of gas turbine is the single biggest operating parameters in terms of production loss, repair cost, and safety. Blade failure is regarded as one of the most critical problems on gas turbine and always causes critical failure. Consequently, the early faults detection of blade damage becomes more attractive to many developers to improve the inspection technique and minimize such critical downtimes. The research presented in this dissertation is based on theoretical modelling used to develop vibration based techniques to distinguish combined faults of crack and support looseness in a cantilever beam, representing a turbine blade. There are three vibration based methods studied in this work, which comprise of modal analysis, response analysis, and spectrum analysis. All of them are simulated by the Finite Element (FE) modelling and analysis incorporating with simplified crack model, which gives good accuracy at few low frequency modes, to validate each method through similar algorithms. The study on a cantilever beam model in each method consists of four conditions no fault, root looseness fault, crack fault, and combined faults. ····· 1036191656
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Over the years, the numerical modeling of transport phenomena has been obtained a great portion in the solution of scientific and industrial problems. One of the new numerical techniques is Lattice Boltzmann Method. This method has a lot of advantages like easy implementation, flexible boundary condition, and fast convergence. Also, t is appropriate for simulation of complex geometries and domains like porous media, multiphase flow and etc. The present book provides an investigation of the transport phenomenon in porous media within a computational geometry using LBM. This book should help shed some light on the industrial and educational investigations of porous media and should be particularly useful to professionals in LBM modeling, or anyone else who may be considering employing of numerical techniques for porous and non-porous mediums. ····· 1036191643
für 49.41€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Assembly line is a flow-oriented production system where the productive units performing the operations, referred to as stations, are aligned in a serial manner. Any assembly line comprises a finite set of work elements called tasks. Each task is characterized by an operation processing time and a set of precedence relationships, which specify the allowable orderings of the tasks. To develop a good assembly system, good observation is required. However, observing real manufacturing system is very expensive and sometimes cumbersome. The rapid rate at which the whole process takes place, the interaction between workers, and the different transition times between workers make it increasingly more difficult for a human being to make correct decisions regarding how fast each operator should work in order to continue the process while at the same time keeping productivity high and throughput at an acceptable level. However with a simulation models, we can explore how an existing system might perform if altered, or how a new system might behave before the prototype is even completed. Thus modeling and simulation technique help managers in decision making by saving on costs and lead times ····· 1036191618
für 39.90€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The purpose of this study is to propose a set of revival program, to give Seoul, a sense of nature and monumentality, the history of urban planning is totally erased from the new Seoul. And it lack today a sense of orientation and context. The design and construction aspects of the Cheonggyechon Restoration Project in Seoul, Korea are presented in this book. The Cheonggye-chon(`chon` means a stream) is a stream that flows from west to east across the northeastern quarter of Seoul. It had been covered by a concrete deck structure, served as a roadway that had been one of the capital`s major arterials. An elevated expressway above the road was built to handle increased traffic loads. Due to several reasons, it was decided to remove the concrete roadway and the elevated expressway, and restore the environmental health of the stream. This renewal project not only brings environment-friendly eco-system to the area, but also promises a new economic life into the area. ····· 1036191580
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Stringent emission regulations around the world necessitate the use of high-efficiency catalytic converters in vehicle exhaust systems. Therefore, determining the optimum geometry of the honeycomb monolith structure is necessary. This structure requires a high surface area for treating gases while maintaining a low pressure drop in the engine. In this book, an adapted sub-grid scale modeling is used to predict the pressure loss of square- and hexagonal-cell-shaped honeycomb monoliths. This sub-grid scale modeling represents the actual variations in the pressure drop between the inlet and outlet for various combinations of wall thickness and cell density. A comparison is made between the experimental and numerical results established in literature. The present approach is found to provide better and more comprehensive results than the single channel technique. ····· 1036191571
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Since the dawn of civilization, mankind has always had a fascination with fluids whether it is the flow of water in rivers, the wind and weather in our atmosphere, the smelting of metals, powerful ocean currents or the flow of blood around our bodies. This book comprises with the basic concepts and foundation needed for the fluid flow and various numerical techniques commonly used for the solution of highly non linear ordinary and partial differential equations. The book also contains the physical model of some Industrial problems related to steady and unsteady magneto-hydrodynamic flows, flow of fluids in porous media, radiative flow of fluids with temperature dependent fluid properties etc. This book may be helpful to applied scientific fields, industries and the research workers working in the field of computational magneto-hydrodynamic (MHD) heat and mass transfer flows in porous media. ····· 1036191554
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Regarding the high rate of scrap production increase in developed and developing countries, governments are issuing legislations to force companies recycling their products after disposal. This fact is clear in Automotive and electrical appliances industry. Currently at the end of life of products, recyclers think how to take advantage of product end of life. This problem originates from product design and development process. In order to achieve environmentally conscious products, these two elements have to be considered i.e. assembly and disassembly. ····· 1036191505
für 49.41€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Synthetic fibers are generally used to make composite materials for their better mechanical and thermal properties. However, they are expensive and non-biodegradable. Alternatively, natural fibers are inexpensive, biodegradable, easily available in nature and have good mechanical, and thermal. Among all natural fibers, jute fibers are easily available in fabric and fiber forms with good mechanical and thermal properties. Therefore, jute-based composite materials can be used in consumer goods, low-cost housing, cars, and civil structures. Jute fibers are chemically treated to improve fiber/matrix interface adhesion and moisture induced degradation. Biodegradable composites are manufactured using jute fabrics, biodegradable polymer and with/without nanoclay using the compression molding process. The effects of surface treatment and nanoclay on the jute based composites were characterized by thermal, mechanical, and physical analyses. Surface treated jute fiber reinforced composites showed better performances compared to untreated fiber reinforced composites. Nanoclay infused composites showed better thermal, mechanical, and physical properties compared to conventional composites. ····· 1036191481
····· lezzter Preis 44.10€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The composite materials are well known by their excellent combination of high structural stiffness and low weight. This is of the fundamental importance to develop tools that allow the designer to obtain the optimized design considering the structural requirements, functional characteristics and restrictions imposed by the production process. In this work, taking into considerations the above limitations the dynamic behavior of beams and plate manufactured from fiber reinforced composite materials are considered. Modal analysis is carried out with the help of commercial finite element code ANSYS to determine the influence of fiber orientation as well as the stacking sequence on the natural frequencies and maximum central deflection in case of uniform loading over the plate. The behavior of laminated composite plate under pressure loading was studied by using ANSYS . The effect of fiber orientation, number of plies, and stiffness ratio on the displacement of symmetric and anti symmetric laminated composite plates subjected to uniform pressure loads are studied in this work. ····· 1036191401
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Wear problem of grey cast irons selected as case study in this work is being faced in Brake Rotors, where abrasive and adhesive wear of these grey cast irons takes place due to the abrasive action. Although efforts have been made to reduce the friction coefficient and to increase the wear resistance of grey cast irons by varying alloying elements such as titanium yet there is little or no work on the use of coatings on various grades of grey cast irons used in braking rotors. The objective of the study is to develop the Detonation Sprayed wear resistant coatings Cylindrical pins of grey iron (GIHC and GI250) have been prepared. Three different coatings i.e. Stellite-21, Cr3C-25NiCr, and Al2O3-40TiO2 were deposited on end faces of these pins. Coatings were characterized using SEM/EDAX and XRD analysis. The wear testing on the uncoated as well as coated grey cast iron specimens was done with the help of Pin-on- Disk wear test rig. Wear data was collected for three loads i.e. 40N, 50N, 60N. The worn out specimens were characterized by SEM / EDXA analyses. ····· 1036191334
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In the monography authors has formulated crystallisation model of multicomponent bronze. In the leading-outs authors made use of generalisation basis experience in area of moulding multicomponent bronzes with lead and own scientific researches. In this work authors has shown ways of the directed formation of morphology of lead inclusions on an example multicomponent bronze. In work quantitative dependences of structure parameters and properties multicomponent bronzes depending on conditions of their crystallisation are resulted. The monography is intended for experts in the field of materials technology and technology of constructional materials, and also for a wide range of science officers, post-graduate students and students of high schools of technical specialities. The monography is executed within the limits of the governmental order of the Russian Federation 218 from April, 9th, 2010 ····· 1036191315
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Pipe bends are considered as a critical component in the piping system. Therefore, it is very important and necessary to be able to predict their response accurately and to have deep understanding of their elastic-plastic behavior under different conditions of loads. By understanding their behavior, it is very useful, for the design safe purposes, to have accurate and conservative estimates of the limit loads, beyond which the structure of the pipe bend undergoes excessive plastic deformation. The historical of pipe bends have been difficult to analyze accurately. With the development of finite element analysis (FMA) it has become possible to model, the behavior of pipe bends using a variety of elements. In research, shell elements are often used in piping analysis. The goal of this research is to study behavior of the pipe bends under different conditions of loads and to study the effects of changing the value of pipe bend factors, varying with wall thickness. ····· 1036191272
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Uno de los principales inconvenientes generados en el campo de la tribología es la dificultad de reproducir con exactitud las condiciones de servicio en el laboratorio. Ante un problema de desgaste es necesario elegir entre las diferentes configuraciones de ensayo disponibles, tratando de emular al máximo las condiciones reales. Pero este objetivo es difícilmente alcanzable, puesto que las variables y condiciones de servicio son tan particulares y concretas como posibles aplicaciones. Tampoco resulta práctico ni viable disponer de tantos dispositivos de ensayo como posibilidades reales, por lo que el problema se traslada a conseguir la configuración más extrapolable posible. En este libro se pretende hacer un estudio del comportamiento tribológico de un acero sometido a distintos tratamientos térmicos mediante tres técnicas de ensayo diferentes recogidas en las normas ASTM: pin on disk, rueda de caucho y arena seca, y rueda de caucho y arena húmeda. El objetivo es extraer conclusiones en cuanto a la diferencia de comportamiento de las distintas muestras en función de su dureza, y compararlas para las tres técnicas, buscando saber si los resultados son equivalentes entre si. ····· 1036191152
für 35.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El taladrado por fricción ( friction drilling o thermal drilling ) o también llamado como taladro por fluencia térmica es un método no convencional para la generación de agujeros en tubos, chapas y piezas de poco espesor. Una de las características de este proceso es que la herramienta rotativa empleada carece de filos de corte, estando su geometría definida básicamente por dos secciones distintas: una superficie cónica y otra cilíndrica. Las ventajas que ofrece este proceso frente a un taladrado convencional son muchas: no se emplea refrigerante exterior, ni se genera viruta, por lo que se trata de un proceso limpio y ecológico. En el material taladrado se deforma produciendo una copa susceptible de ser roscada, eliminación de tuercas soldadas, de gran interés en el sector de automóvil. Por este motivo se focaliza el presente trabajo en aceros de doble fase de alta resistencia, material de importancia estratégica en la fabricación de automóviles. ····· 1036191134
für 26.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Excesivos niveles de vibración síncrona e inestabilidades del rotor a velocidad subsíncrona son los dos problemas más comunes en rotodinámica. Los amortiguadores de película delgada, mejor conocidos en el idioma inglés como Squeeze Film Dampers (SFDs) han sido desarrollados y empleados durante años para suprimir o reducir estos problemas en turbomáquinas de alto desempeño, tales como compresores, turbinas de gas y bombas de agua. Para lograr un mayor acercamiento al entendimiento de los SFDs se resuelve la ecuación de Reynolds que ha mostrado resultados satisfactorios. Para validar los resultados obtenidos, estos se comparan con los resultados de trabajos anteriores. Cuantificar la ingestión de aire y su efecto en los SFDs de longitud finita es la aspiración del presente trabajo. Los resultados son presentados como función de tres números adimensionales que contemplan los parámetros de operación del cojinete, por lo que los resultados son de aplicación directa. ····· 1036190761
für 88.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El proceso de inyección es un proceso de conformado de los materiales poliméricos termoplásticos que representa una notable importancia económica y tecnológica. Bajo estas premisas, el objetivo principal de este trabajo de investigación es el desarrollo de materiales a partir del empleo de materiales de naturaleza reticular reversible (elastómeros termoplásticos) que puedan procesarse mediante técnicas de inyección convencionales y que sean capaces de aportar una buena inercia térmica para confort, mediante el empleo de materiales microencapsulados con cambio de fase (PCMs). ····· 1036190363
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El presente trabajo consiste en el rediseño de los requerimientos básicos de una máquina de limpieza contínua de aguas residuales para industrias como tenerias, lavanderias entre otras. En el desarrollo del mismo se procedió a obtener información con el fin de establecer conocimiento propio respecto al rediseño del filtro de mallas giratorio. Se establecieron los requeriminetos finales del mismo en cuanto a: Equipos, piezas, materiales, capacidades y disposición, asi como los resultados de los cálculos efectuados de acuerdo a las variables experimentales. Se elaboraron los manuales necesarios para la construcción, mantenimiento y operación del equipo. Se realizó la estimación de costos del equipo. El criterio utilizado para el rediseño del sistema de discos giratorios se basó en pruebas experimentales y de acuerdo a las necesidades de limpieza de las aguas residuales que descargan las industrias. ····· 1036190152
für 62.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Las operaciones de rectificado sin centros presentan unas características que las hacen especialmente susceptibles de sufrir inestabilidades dinámicas, dando lugar a las vibraciones de chatter. Tratándose de un proceso generalmente utilizado en operaciones de acabado, la presencia de vibraciones en este tipo de máquinas es especialmente perjudicial, por lo que el diseño de sistemas de control representa un campo de gran interés. Estos diseños requieren disponer de modelos precisos que evalúen la efectividad de diferentes alternativas antes de su implantación práctica, de tal forma que se pueda abordar un proceso de optimización mediante simulaciones. Atendiendo a la necesidad mencionada, en este libro se presenta tanto el estudio de las características dinámicas de una rectificadora sin centros como el proceso de simulación de un sistema de control activo de vibraciones. Las estimaciones teóricas obtenidas muestran una adecuada correspondencia con los resultados experimentales, validando el modelo desarrollado. ····· 1036190127· 1 · ::::: · 42 ·· 43 ·· 44 ·· 45 ·· 46 ·· 47 ·· 48 · ::::: · 83 ·
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