Introduction


Welding using friction as the major resource
No filler material involved
Welds created by,
a) Frictional heating
b) Mechanical deformation

History
Invented by TWI in 1991 in England
28 organizations worldwide use FSW

Friction Welding

Heat from mechanical energy conversion

Linear friction welding
Rotary friction welding
Material Suitability

Copper and its alloys
Lead
Titanium and its alloys
Magnesium alloys
Zinc
Plastics
Mild steel
....etc

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I would highly appreciate if Im allowed to become a member of your organization ....etc

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i want to know about laser beam welding. Please provide any ppt ....etc

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1. INTRODUCTION

Hydro forming is a relatively new process, which uses water pressure to form complex shapes from sheet or tube material. Design studies suggest that automobiles can be made much lighter by using hydro formed components made of steel. Structural strength and stiffness can be improved and the tooling costs reduced because several components can be consolidated into one hydro formed part.
As the automobile industry strives to make car lighter, stronger and more fuel efficient, it will continue to drive hyd ....etc

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WELDING
– Welding is a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application of pressure or by the application of pressure alone, and with or without the use of filler material.
– Welding is used for making permanent joints.
– It is used in the manufacture of automobile bodies, aircraft frames, railway wagons, machine frames, structural works, tanks, furniture, boilers, general repair work and ship building.
TYPES
....etc

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ABSTRACT

Ultrasonic metal welding is a solid state welding process, and here ultrasonic vibrating motion is used to join two materials. The two work pieces are held in between the anvil and sonotrode. The work piece on the anvil is hold stationary while the other part is moved to and fro due to the vibrating effect of the sonotrode. This movement the oxide disperses layer in between them and atoms of the work pieces are diffused from one part to another. When vibration is stopped a pure metallurgical bond is obtained.
[attachment=80 ....etc

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WELDING
– Welding is a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application of pressure or by the application of pressure alone, and with or without the use of filler material.
– Welding is used for making permanent joints.
– It is used in the manufacture of automobile bodies, aircraft frames, railway wagons, machine frames, structural works, tanks, furniture, boilers, general repair work and ship building.
TYPES
....etc

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METAL JOINING TECHNIQUES
1. WELDING
2. BRAZING
3. SOLDERING

BRAZING
IT IS A GROUP OF WELDING PROCESSES IN WHICH COALESCENCE IS PRODUCED BY HEATING TO SUITABLE TEMPERATURE ABOVE 8000F BUT BELOW THAT OF BARE METALS
TYPES OF BRAZING
1. TORCH BRAZING
2. FURNACE BRAZING
3. INDUCTION BRAZING
4. RESISTANCE BRAZING
EXOTHERMIC BRAZING
PROCESS IN WHICH HEAT REQUIRED TO MELT AND FLOW A COMMERCIAL FILLER METAL ALLOY IS GENERATED BY A SOLID STATE EXOTHERMIC CHEMICAL REACTION.
EXOTHERMIC P ....etc

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1. INTRODUCTION

Passive millimeter-wave (PMMW) imaging is a method of forming images through the passive detection of naturally occurring millimeter-wave radiation from a scene. Although such imaging has been performed for decades (or more, if one includes microwave radiometric imaging), new sensor technology in the millimeter-wave regime has enabled the generation of PMMW imaging at video rates and has renewed interest in this area. This interest is, in part, driven by the ability to ....etc

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Maximum : 100 marks
Time : 1 hour and 15 minutes

1.Communication is derived from the Latin noun :
(A) Communis
(B)Communism
(C ) Mechanism
(D)Community

2.Interpersonal Communication is :
(A) Communication within oneself
(B) Communication between a group of People
(C ) Communication between two persons
(D) Communication between media and People

3.Grapevine is:type of Communication.
(A) Formal
(B)Informal
(C ) Real
(D)Telephonic

4.Commercial theory is also known as :
(A) Play theory
(B)Multistep the ....etc

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*The first Indian language newspaper

Ans : Samachar Darpan (Bengali)
*The oldest continously published newspaper in India 
Ans : Bombay Samachar 
*Boambay Samachar was started by 
Ans : Fardunjee Marzban (1822)
*The state in which the most number of newspapers are published 
Ans : Uttar Pradesh
*The state which publishes newspapers in most number of languages 
Ans : New Delhi
*The state which does not publish any newspapers
Ans : Arunachal,Pradesh[ ....etc

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ABSTRACT
Hydro forming is the process by which water pressure is used to form complex shapes from sheet or tube material.
Applications of hydro forming in automotive industry are gaining globally in popularity. The trend in auto manufacturing of making parts lighter and more complicated with necessary strength reinforcement only where required is on the rise. The capability of hydro forming is more fully used to produce such complicated parts.

Chapter “I
INTRODUCTION
Hydro Forming uses water pressure to form c ....etc

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ROBUST AND SECURE AUTHENTICATION PROTOCOL BASED ON
COLLABORATIVE KEY AGREEMENT FOR PEER TO PEER OF DYNAMIC
GROUP
Presented By:
J. Armstrong Joseph 1
P. Arockia Jansi Rani 2
Lecturer, St. Peterâ„¢s Engineering College, Avadi, Chennai, India,
Lecturer, Manonmaniam Sundaranar University, Tamilnadu, India,


ABSTRACT
There is a need for security services to provide group
oriented communication privacy and data integrity in
many group-oriented distributed applications. To provide
this form of group ....etc

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