METAL FOAM
BY cloud2511

Metal foam is a cellular structure consisting of a solid metal, frequently 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 its density; i.e., a 20% dense material is more than twice as strong as a 10% dense ....etc

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Presented By:
By Gordon A. Shaw, Jeremy S. Trethewey, A. David Johnson, Walter J. Drugan, and Wendy C. Crone


In this seminars, we examine the feasibility of using thin-film NiTi shape-memory alloys (SMAs) for thermomechanical data storage as an alternative to the polymer thin film used as the data storage medium in the IBM Millipede device.'8' NiTi is a potentially more robust and rapid storage medium than the polymer films currently used for thermomechanical data stor¬age. For example, the poly(methyl methacrylate) ( ....etc

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1.Which one of the following is called as valence electron in an atom ?
(A)No. of electrons in inner orbit
(B)No. of electrons in N shell
(C )No. of electrons in outermost orbit
(D)No. of electrons in M shell

2.One mega ohm is equal to_____________ohm.
(A)1 x 10*
(B)1x106
(C )lxlO3
(D)1 x 10-3

3.Which factor docs not depend on resistance of tire conductor among the following factors ?
(A)Length
(B)Material
(C )Voltage
(D)Temperature

4.Which material has the negative temperature co - efficient among the ....etc

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hi i am Muhammad Uzair, i would like to get details on QUANTUM FOAM ppt.
i personally visited this site but did not find this article now i am living in Pakistan and i studied this article on wikipedia and now i need help on this.
kindly provide me ppt on this topic i shall be very thankful to you. ....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/m³, th ....etc

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Abstract
This paper focuses on the experimental investigation carried out on high strength concrete reinforced with hybrid fibres (combination
of hooked steel and a non-metallic fibre) up to a volume fraction of 0.5%. The mechanical properties, namely, compressive strength, split
tensile strength, flexural strength and flexural toughness were studied for concrete prepared using different hybrid fibre combinations –
steel–polypropylene, steel–polyester and steel–glass. The flexural properties were studied using four point ben ....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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94/2014
Maximum : 100 marks
Time : 1 hour and 15 minutes

1. According to Census 2011, the taluk in Kerala having the highest birth rate is :
(A) Thiruvalla
(B)Tirurangadi
(C ) Cherthala
(D)Adoor

2.India’s first spacecraft for Mars is named :
(A) Chandrayaan
(B)Agni
(C ) Indra
(D)Mangalyan

3.Srinagar is located on the banks of:
(A) Jhelum
(B)Beas
(C ) Tapti.
(D)Son

4.Indian Viceroy who abolished sati in 1829 :
(A) Lord Wellesley
(B)Lord Linlithgow
(C )Lord William Bentick
(D)Lord Macaulay

5 ....etc

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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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Hi, ....etc

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