In electron-beam machining (EBM), electrons are accelerated ..
In electron-beam machining (EBM), electrons are accelerated to a velocity nearly three-fourths that of light.

The process is performed in a vacuum chamber to reduce the scattering of electrons by gas molecules in the atmosphere.

The stream of electrons is directed against a precisely limited area of the workpiece;

on impact, the kinetic energy of the electrons is converted into thermal energy that melts and vaporizes the material to be removed, forming holes or cuts.
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INTRODUCTION

The history of antimatter begins with a young physicist named Paul A.M.Dirac (1902-1984) and the strange implications of a mathematical equation. This British physicist formulated a theory for the motion of the electrons in electric and magnetic fields. Such theories had been formulated before, but what was unique about Dirac’s was that his included the effects of Einstein’s Special Theory of Relativity. This theory was formulated by him in 1928.Mean while he wrote down an equation, which combined quantum theory and s ....etc

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INTRODUCTION

The history of antimatter begins with a young physicist named Paul A.M.Dirac (1902-1984) and the strange implications of a mathematical equation. This British physicist formulated a theory for the motion of the electrons in electric and magnetic fields. Such theories had been formulated before, but what was unique about Dirac’s was that his included the effects of Einstein’s Special Theory of Relativity. This theory was formulated by him in 1928.Mean while he wrote down an equation, which combined quantum theory and s ....etc

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Kindly tell the result of draw on 18-8-2016 ....etc

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Couplage des méthodes Lattice Boltzmann sur Réseau et les Eléments Discrets (DEM) pour les simulations des interactions fluide-structure



Contexte de la thèse
Les problèmes numériques dus aux distorsions des éléments du maillage sont des obstacles majeurs pour la résolution des problèmes d’écoulements de fluides à surface libre et d’interaction fluide structure.
La résolution numérique se fait classiquement avec des méthodes de maillage d ....etc

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INTRODUCTION
As the world is advancing forth technically in the field of space research, missile and nuclear industry; very complicated and precise components having some special requirements are demanded by these industries. For meeting these challenges unconventional methods of machining have evolved. The unconventional methods of machining have several specific advantages over conventional methods of machining and these promise formidable tasks to be undertaken and set a new record in the manufacturi ....etc

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ELCTRON BEAM MACHINING



Electron beam machining (EBM)

similar to LBM except laser beam is replaced by high velocity electrons.
when electron beam strikes the work piece surface, heat is produced and metal is vaporized.
surface finish achieved is better than LBM.
Used for very accurate cutting of a wide variety of metals.

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Micro-electro Mechanical Systems (MEMS)

Introduction
The satellite industry could experience its biggest revolution since it joined the ranks of commerce, thanks to some of the smallest machines in existence. Researchers are performing experiments designed to convince the aerospace industry that microelectromechanical systems (MEMS) could open the door to low-cost, high-reliability, mass-produced satellites.MEMS combine conventional semiconductor electronics with beams, gears, levers, switches, accelerometers, diaphragms, microfluidic thrus ....etc

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1. INTRODUCTION
Rocket engines that work much like an automobile engine are being developed at NASAâ„¢s Marshall Space Flight Center in Huntsville, Ala. Pulse detonation rocket engines offer a lightweight, low-cost alternative for space transportation. Pulse detonation rocket engine technology is being developed for upper stages that boost satellites to higher orbits. The advanced propulsion technology could also be used for lunar and planetary Landers and excursion vehicles that require throttle ....etc

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I am diploma student of 5thsem, i want to give a seminar in college, i want good topics for seminars, give me ECM and LBM details and ,,if that not then give details about IC engine ....i need it ....etc

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ABSTRACT
The increasing complexity of the transmission expansion planning problem in the restructured industry makes simulation the only viable means to evaluate and compare the performances of different plans. Ordinal optimization is an approach suitable for solving the simulation-based multiyear transmission expansion planning problem. It uses crude models and rough estimates to derive a small set of plans for which simulations are necessary and worthwhile to find good enough solutions. In the end, reasona ....etc

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INTRODUCTION
As the world is advancing forth technically in the field of space research, missile and nuclear industry; very complicated and precise components having some special requirements are demanded by these industries. For meeting these challenges unconventional methods of machining have evolved. The unconventional methods of machining have several specific advantages over conventional methods of machining and these promise formidable tasks to be undertaken and set a new record in the manufacturi ....etc

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