The effect of sub surface defects in surface roughness monitoring through ultrasonic flaw detector.
Objective
 To study the effect of sub surface defects in surface roughness monitoring through ultrasonic flaw detector.
 To study the sizing of defects.
Ultrasound Concepts
• All sound waves, whether audible or ultrasonic, are mechanical vibrations involving movement of the medium in which they are traveling. A sound wave may be transmitted through any material which behaves in an elastic manner.
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INTRODUCTION

As thin display technology improves, TV sets will be available in wider shapes and sizes. Fold-up TVs and wearable TVs, similar to wearable PCs will be launched soon.

A plethora of display technologies catering to different requirements of different applications are available. Electroluminescent(EL) displays, vacuum fluorescent displays (VFDs), and light emitting diodes (LEDs) have a wide operating temperature range and luminescent characteristics

OLEDs are lightweight, durable, power efficient and ideal for porta ....etc

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what is the spontaneous emission and what is the stimulated emission ppt? ....etc

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please send me full content immediately ....etc

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I am a btech final year student, i need to give a seminar on the related topic. plzzzzzz give me more info on SED technology like seminar report, power point presentation. ....etc

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can any 1 send full report of OLED DISPLAYS please... ....etc

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PRESENTED BY:
SUNAINA.N


INTRODUCTION
 PLEDs using LEP are the next generation display types that promise excellent results as well as cost and power efficiency
 LEPs can emit light when a voltage is applied across it.
 A thin semiconducting polymer sandwiched between two electrodes.
 They are usually made by Ink jetting process.
 film thickness uniformity is obtained by multi passing heads with drive per nozzle technology.
 Displays using LEPs have small size , no viewing angle restr ....etc

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Abstract:
reflective cholesteric liquid crystal displays (Ch-LCDs) because they are lightweight, low power flat-panel displays. Furthermore, Ch-LCDs can be made bistable which allows for the manufacture of large area, high- resolution displays without the need for expensive, difficult to manufacture active matrix addressing schemes. Also, the bistability enables flicker-free operation. Currently, these displays are made using glass substrates. However, some applications require rugged (i.e., nonbreakable), flexible displays. The use of a plas ....etc

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Vertical Cavity surface Emission Lasers (VCSEL) are lasers that emit light from their surface in contrast with regular ???edge emittersâ„¢. Also they have got a vertical cavity , as the name suggests, which enables surface emission.???Vixels??? , as they are commonly called ,have several superior characteristics compared to their edge emitting counter parts.

VCSEL Semiconductor micro laser diodes which emit light perpendicular to their PN junction in a cylindrical beam vertically from the surface of a fabricated wafer and feature circul ....etc

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Cognitive Issues in Head-Up Displays

This article is presented by:

Edith Fischer
San Jose State University Foundation
San Jose, California
Richard F. Haines
Ames Research Center
Moffett Field, California
Toni A. Price
San Jose State University Foundation
San Jose, California

To execute a successful CAT II approach and landing, the pilot uses both instrument information and visual cues from the outside scene. In the conventional cockpit these two sets of information ....etc

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