METAL FOAM

PRESENTED BY :cloud2511


abstractor
A metal foam is a cellular structure consisting of a solid metal, For ex. aluminium, containing a large volume fraction of gas-filled pores.
The pores can be sealed (closed-cell foam), or they can form an interconnected network (open-cell foam).
The defining characteristic of metal foams is a very high porosity: typically 75-95% of the volume consists of void spaces.
The strength of foamed metal possesses a power law relationship to it ....etc

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about foam concrete applications ppt in to the right box for getting free material and support from us/dedicated premium members.. ....etc

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Based on some general principles of quantum mechanics and general theory of relativity, one can argue that space-time is fundamentally not smooth. Instead, in a quantum theory of gravity space-time would have a foamy, jittery nature and would consist of many small, ever-changing, regions in which space and time are not definite, but fluctuate.

In quantum mechanics, and in particular in quantum field theory, Heisenberg uncertainty principle allows energy to briefly decay into particles and antiparticles which then annihilate back to energy ....etc

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I am a welding methods specialist and in need of Aluminium welding defects causes and remedies PPT ....etc

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Abstract

Rapid urbanization has resulted in drastic increase in housing demand today. The traditional or conventional method of construction for mass housing is comparatively, a slow process and has limited quality control, particularly when a large size project is involved. It is therefore obligatory to work out a method or a scheme where the speed and quality of construction are controlled automatically by a systematic approach. Many methods have emerged and have been tried out and are still being adopted ....etc

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INTRODUCTION


Metal foam is a dispersion of gas bubbles in a metallic bulk material
These are extremely lightweight materials
It contains 50% or more holes
They have some very promising properties

Structure o f metal foam
In metal foams cells are divided into distinct cells. the boundaries of these materials are made of solid material, the interior are voids.


Light weight Al foam
The best quality metal foams presently available
It has a density of from 300 to 1,000 kg/m , that is, ....etc

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To get full information or details of aluminium alloys heat treatment please have a look on the pages

http://seminarsprojects.net/Thread-aluminium-formwork-system?pid=66325#pid66325

if you again feel trouble on aluminium alloys heat treatment please reply in that page and ask specific fields in aluminium alloys heat treatment ....etc

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Particle reinforced MMC?s are now being produced commercially and in this paper the various processing techniques used for the production of aluminium composites and factors affecting their quality are overviewed. The various techniques like powder metallurgy, spray deposition, molten metal infiltration, molten metal mixing, liquid metallurgy, compo-casting technique etc. The factors affecting the uniform dispersion of the composites and the various properties of the metal matrix composites are also discussed. Aluminium alloy matrix particulate ....etc

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1.INTRODUCTION
1.1 What are Aluminum Alloys ?
Aluminum is a revolutionary metal. It changed the scenario in engineering designing for almost everything ranging from utensils to aircrafts. It was also referred to as the gold in its early days of discovery. Aluminum exhibits outstanding strength with low density and light weight. As the engineering marvels developed an increasing demand was witnessed to further reduce the weight of aluminum and to increase its strength for applications like ship building, aircraft de ....etc

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