Presented by:
Jeong Sik Yim
Heong Kook Joo
Dong Seong Sohn


ABSTRACT

The holddown Spring is one of the major components of a fuel assembly for PWR. It holds the fuel assembly firmly seated down on the lower core plate and allows the FA axial movement caused from the irradiation growth of guide thimbles. Depending on the up-lift force of a fuel assembly, from 2 to 4 leaves are assembled to be a set of a spring pack and it is fixed on the frame of the top end piece by screw. The spring can deflect so greatly during operat ....etc

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INTRODUCTION
Gas springs provide controlled motion and speed for elements, such as lids and doors, that open and close. They typically rely on the fluid dampening of a gas such as nitrogen in the cylinder. Important performance specifications for gas springs include absorber stroke, compressed length, extended length, maximum force (P1), and maximum cycles per minute
The absorption or damping action for gas springs can be compression or extension. In a compression gas spring the shock absorption or dampening occurs in the compressio ....etc

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Active Suspension System

COMPONENTS



A Computer or an electronic control unit (ECU)

Sensors

Actuator or Servo

Adjustable shocks and springs


Functions of Active Suspension

Improves driver control, safety and stability, with or without a load .
Eliminates sway and reduces roll on corners
Reduces axle wrap
Maximum safety
Absorbs load, rather than resisting it, thereby ensuring a much more comfortable ride
Eliminates the need for fitting extra blades which harden the ride
Better handling a ....etc

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To find the stiffness of closed helical spring ....etc

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GAS SPRINGS
SEMINAR REPORT
Submitted by
BIBIN BABU
S7M1, Roll No: 27113
Department Of Mechanical Engineering
College of Engineering, Thiruvananthapuram – 16
October, 2010

ABSTRACT
A gas spring is a type of spring that, unlike a typical metal spring, uses a compressed gas, contained in a cylinder and compressed by a piston, to exert a force. Gas springs are used in automobiles, where they are used to support the weight of doors while they are open. They are also used in furnit ....etc

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i am b.e. mechanical student,i need seminar & ppt on composite leaf springs ....etc

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sir i am k.venkatesh doing a project on analysis of leaf springs, i want the properties of steel materials and the complete details of the project. i am doing REPLACING THE UP-TURN EYE OF A LEAF SPRING WITH BERLIN EYE. please give details about the properties of steel materials too. ....etc

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It is an undeniable fact that the human-being represent the weakest page link in the Driver-vehicle Environment interactive system and that it is urgently necessary to adopt automotive engineering, even more closely to limited human capabilities.


Among the various Automobile technologies of tile 90's one of biggest boon has been in the suspension systems. The earlier suspension systems consisting of a combination of leaf springs, coil springs, special suspension mountings or replaced now by the new ?Active Electrically ....etc

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GAS SPRINGS
ABSTRACT
Gas springs provide controlled motion and speed for elements, such as lids and doors, that open and close. The absorption or damping action for gas springs can be compression or extension. In a compression gas spring the shock absorption or dampening occurs in the compression direction. In an extension gas spring the shock absorption or dampening occurs in the extension direction. Important physical specifications for gas springs include the cylinder diameter or maximum width, the rod diameter, mounting, and body materi ....etc

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Air Suspension System


Welded joints in a welded structure are expected to possess certain service-related capabilities. Welded joints are generally required to carry loading of various types in which the weld is subjected to stress of either a simple or complex character. More over a finished weld is not always as good or as bad as it may appear to be on its surface. It is therefore necessary to find out how satisfactory or sound the weld is. For this purpose certain weld inspection and testing procedures have been discovered and standardi ....etc

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