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.
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To get full information or details of ultrasonic metal welding please have a look on the pages

http://seminarsprojects.net/Thread-ultrasonic-metal-welding?pid=33399&mode=threaded

http://seminarsprojects.net/Thread-welding-of-metals

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Morphing Aircraft Technology
&
New Shapes For Aircraft Design
V.Vikram
S6 Department of Mechanical Engineering
Mohandas college of Engineering and Technology



Abstract
Morphing aircraft are multi-role aircraft that change their external shape substantially to adapt to a changing
mission environment during flight.2 This creates superior system capabilities not possible without morphing shape
changes. The objective of morphing activities is to develop hig ....etc

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INTRODUCTION
CAUSE OF CORROSION MOISTURE, WATER, CRACKS
AREAS AFFECTED SURFACE, LAP JOINTS, FASTENERS
3. NEED OF NDT
NON DESTRUCTIVE TESTS (NDT)
VISUAL INSPECTION
MAGNETIC PARTICLE TEST
LIQUID (DYE) PENITRATION TEST
X RAY PENETRATION INSPECTION
EDDY CURRENT INSPECTION
ULTRASONIC INSPECTION
DEFECTS OF CONVENTIONAL SYSTEMS
INSPECTION FROM TOP NORMAL TO SURFACE
2. TIME CONSUMING FOR POINT TO POINT INSPECTION
3. INABILITY TO DETECT (a) DISBONDS IN MULTILAYER
(b) FATIGUE CRACKS AT ....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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