Detection of corrosion damage in aircraft wing skin structures is an ongoing NDT challenge. Ultrasonic methods are known and well-accepted techniques, which are relatively simple to carry out in terms of setup, probes and instrumentation and operator training. However, with conventional inspection from the top surface using a transducer at normal incidence (0o to the normal to the surface) producing a visual picture in the form of a C-scan, it is very tie consuming to point-by-p ....etc

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please go through the following thread for more details on 'ultrasonic tech for hidden corrosion detection'

http://seminarsprojects.net/Thread-ultra-sonic-techniques-for-the-detection-of-hidden-corrosion-in-air-craft-wing-skin ....etc

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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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Rehabilitation And Repairs Of Corrosion Distressed Structures By Composite Fibre Wrapping And Electrochemical Techniques

Deterioration of reinforced concrete structures due to corrosion of steel is a cause of global concern. The losses due to corrosion every year run into millions of rupees and any solution to this universal problem of corrosion has a direct bearing economy of the country. It is estimated that about 30-40 percent of steel produced each year is used to replace corroded material.
In recent years, the construction industry ha ....etc

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The cost of Corrosion in India is currently estimated at about Rs. 24,000 Cr/ year.
Although corrosion could be said to be natures method of recycling, or of returning of a
metal to its lowest energy form, it is an insidious enemy that destroys our cars / plumbing
systems / buildings / bridges / engines / factories etc. Avoiding detrimental corrosion
requires interdisciplinary approach by the designer. The approach paper is written from
various resources keeping the same in mind. This paper explains the process of
environmental attack on ....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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Deterioration of reinforced concrete structures due to corrosion of steel is a cause of global concern. The losses due to corrosion every year run into millions of rupees and any solution to this universal problem of corrosion has a direct bearing economy of the country. It is estimated that about 30-40 percent of steel produced each year is used to replace corroded material.
In recent years, the construction industry has seen an increased demand to reinstate, rejuvenate, strengthen and upgrade existing concrete structures. This may be attrib ....etc

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Abstract
Corrosion is one of the serious problem affecting airforce and other aviation industries. It affects the aircraft on its wings, surface, between joints and fasteners. The presences of corrosion underneath the paints of surface and between joints are not easy to be detected. The unnoticed presence of corrosion may cause the aircraft to crash leading to human and money loses.

To detect the corrosion present on the metal surface, various methods and tests are used. These tests conducted should be such that it does not destroy or disassem ....etc

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ABSTRACT

Detection of corrosion damage in aircraft wing skin structures is an ongoing NDT challenge. Ultrasonic methods are known and well-accepted techniques, which are relatively simple to carry out in terms of setup, probes and instrumentation and operator training. However, with conventional inspection from the top surface using a transducer at normal incidence (0o to the normal to the surface) producing a visual picture in the form of a C-scan, it is very tie consuming to point-by-point inspects large aircraft wing skin areas. I ....etc

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Presented By:
Jeremy E. Scheel
Paul S. Prev y II and Douglas J. Hornbach
Lambda Research

ABSTRACT

Corrosion, Stress Corrosion Cracking (SCC) and corrosion fatigue failures of high strength aircraft aluminums are costly and potentially catastrophic material problems affecting the aircraft fleet today. As the service lives of aircraft are extended, the increasing inspection and repair of corrosion in aging aircraft adversely affects fleet readiness, the cost of operation, and personnel safety. Shot peening (SP) is a widely used ....etc

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