the elements are combined together to achieve a system which is more useful and more functional than any of the constituent alone. Composite materials are becoming more and more important to today’s material due to the advantages it brings to us. Some clear evidence of the advantages of composite materials is that composite materials are low in weight, resistant against corrosion, has high fatigue strength etc. Nowadays, they are widely used in the manufacturing of aircraft structures, electronic packaging
material would be achieved using the commercial finite element program ABAQUS/CAE version 6.14. DESIGN TASK A method for preparing and testing a sample of the material comprises of the following steps: 1.Select material type to be used. (metals, polymers, ceramics or in combination) 2.Preparing a powder specimen of the material. (size of 15µm or thereabout) 3.Selection of an appropriate substrate. 4.Sample is fed into 3D equipment and ejected unto substrate via a high velocity inert gas
you will be able to: 1. Outline the progress made in the history of microelectronics. 2. Describe the evolution of microelectronics from point-to-point wiring through high element density state-of-the-art microelectronics. 3. List the advantages and disadvantages of point-to-point
Self-healing materials are no more an illusion and we are not far away from the days when manmade materials can restore their structural integrity in case of a failure. For example, the cracks in buildings can close on their own or the scratches on car bodies can recover their original shiny appearance by itself. Indeed, this is what everyone can see in case of the natural healing of wounds and cuts in living species. In the case of structural materials the long-time degradation process leads to
1. INTRODUCTION F riction surfacing (FS) is a solid state coating process based on the plastic deformation of a metallic consumable rod. As depicted in a rotating rod is pressed against the substrate under an applied axial load. Frictional heat generates a viscoplastic boundary layer at the rod tip. The pressure and temperature conditions lead to an inter diffusion process resulting in a metallic bond between the plasticized material and the substrate. Heat conduction into the substrate enables this
OBJECTIVES AND LAYOUT OF THE THESIS; Objectives In the design of a metal forming process, the only factors that are known are the final product shape and the material with which it is to be made. The fundamental goal of process design in extrusion is to produce industrial parts with high quality, precise dimensions in a most economical way. In this endeavor process optimization is of immense importance. In this thesis Equal Channel Angular Pressing (ECAP) is modeled using finite element method and
QUESTION 3 Introduction “Governments can drive competitive changes by opening their domestic markets to participation or closing them to protect domestic companies.” (Thompson, Strickland and Gamble, 2010: 84) According to Hill (Hill, 2011: 205) there are two types of government arguments, political which focusses on protecting the welfare of particular groups at the expense of other groups and economic arguments which focusses on improving the general economy of a state. Political Arguments for
organizations competitive advantage. How does the understanding of Porters Competitive forces help organizations gain favourable competive positions? Competitive positioning is about defining how you will differentiate your offering and create value for your market. It is about carving out a spot in the competitive landscape,putting your stake in the ground,and winning mindshare in the marketplace-being known for certain something(www.marketingmo.com). Competitive advantage is the favourable position
INTRODUCTION 1.1. Nickel Nickel is a chemical element with atomic number 28. It is denoted by the symbol ‘Ni’ and is one of the main constituent of meteorites. It was discovered in 1751, by Axel Fredrik in Sweden. It belongs to the transition metal group and is known for its hardness and ductility. Significant chemical reactivity is exhibited by pure Nickel. Nickel in its pure or low-alloy form is used in several fields as it is highly resistant to various reducing chemicals. Nickel when annealed