Seminar Topics & Project Ideas On Computer Science Electronics Electrical Mechanical Engineering Civil MBA Medicine Nursing Science Physics Mathematics Chemistry ppt pdf doc presentation downloads and Abstract

Abstract
Laboratories throughout the world are rapidly gaining atomically precise control over matter. As this control extends to an ever wider variety of materials, processes and devices, opportunities for applications relevant to aerospace missions will be created. We would like to survey a number of future molecular nanotechnology capabilities of aerospace interest. Computer applications, launch vehicle improvements, and active materials appear to be of particular interest. If advanced molecular nanotechnology can be developed, almost all of aerospace endeavors will be radically improved. We can utilize the molecular nanotechnology in aerospace transportation, space science, human exploration and development of space and so on. In particular, a sufficiently advanced molecular nanotechnology can arguably bring large scale space colonization within our grasp.

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HI will u please provide me the full report i am very much interested in this topic

The aerospace applications for nanotechnology include high strength, low weight
composites, improved electronics and displays with low power consumption, variety of
physical sensors, multifunctional materials with embedded sensors, large surface area
materials and novel filters and membranes for air purification, nanomaterials in tires
and brakes, logic and memory chips, sensors, catalyst support, adsorption media, actuators, etc.

The Carbon nanotubes(CNT) are the most important of these. These are configurationally equivalent to a two-dimensional graphene sheet rolled up into a tubular structure.There are single wall and multi wall thicked carbon nanotubes(SWCNT and MWCNT).

Mechanical features of CNT:
Young's modulus: 1 TPa '
Tensile strength: 200GPa

CNTs have been shown to provide desirable electrical properties for polymer matrix composites.
The applications in aerospace industry are through thermal barrier and wear resistant
coatings, sensors that can perform at high temperature and other physical and chemical
sensors, sensors that can perform safety inspection cost effectively.

Detailed seminar report download:
[attachment=581]

Also see:
http://ftp.rta.nato.int/public//PubFullT...bis-07.pdf

Its nice topic to read.. can i get the full link admin
Thanks with regards
Dr. S.Shankar

i need a seminar report.please send it to my email id kumarnathash[at]rediffmail.com

PRESENTED BY:
M. Meyyappan

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[attachment=10511]
Nanotechnology:Aerospace Applications
Nanotechnology Areas of Interest to Aerospace Community
• High Strength Composites (PMCs, CMCs, MMCs…)
• Nanostructured materials: nanoparticles, powders, nanotubes…
• Multifunctional materials, self-healing materials
• Sensors (physical, chemical, bio…)
• Nanoelectromechanical systems
• Batteries, fuel cells, power systems
• Thermal barrier and wear-resistant coatings
• Avionics, satellite, communication and radar technologies
• System Integration (nano-micro-macro)
• Bottom-up assembly, impact of manufacturing
Nano-Reinforced Composites
Processing them into various matrices follow earlier composite
developments such as
- Polymer compounding
- Producing filled polymers
- Assembly of laminate composites
- Polymerizing rigid rod polymers
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• Purpose
- Replace existing materials where properties can be superior
- Applications where traditionally composites were not a candidate
Benefits of Nanotechnology in Composite Development
Nanotechnology provides new opportunities for radical changes in composite functionality
• Major benefit is to reach percolation threshold at low volumes(< 1%) when mixing nanoparticles in a host matrix
• Functionalities can be added when we control the orientation of the nanoscale reinforcement
Multifunctionality in Materials
This always implies “structure +” since in most cases the major
function of a structure is to carry load or provide shape. Additional functions can be:
• Actuation controlling position, shape or load
• Electrical either insulate or conduct
• Thermal either insulate or conduct
• Health monitor, control
• Stealth managing electromagnetic or visible signature
• Self-healing repair localized damage

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Nanotechnology in Aerospace Applications

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ABSTRACT

The aerospace applications for nanotechnology include high strength, low weight composites, improved
electronics and displays with low power consumption, variety of physical sensors, multifunctional materials
with embedded sensors, large surface area materials and novel filters and membranes for air purification,
nanomaterials in tires and brakes and numerous others. This lecture will introduce nanomaterials
particularly carbon nanotubes, and discuss their properties. The status of composite preparation – polymer
matrix, ceramic matrix and metal matrix – will be presented. Examples of current developments in the above
application areas, particularly physical sensors, actuators, nanoelectromechanical systems etc. will be
presented to show what the aerospace industry can expect from the field of nanotechnology.
Of all the nanoscale materials, carbon nanotubes (CNTs) have received the most attention across the world.
These are configurationally equivalent to a two-dimensional graphene sheet rolled up into a tubular structure.
With only one wall in the cylinder, the structure is called a single-walled carbon nanotube (SWCNT).
The structure that looks like a concentric set of cylinders with a constant interlayer separation of 0.34 A is
called a multiwalled carbon nanotube (MWCNT).
The CNT’s structure is characterized by a chiral vector (m, n). When m-n/3 is an integer, the resulting
structure is metallic; otherwise, it is a semiconducting nanotube. This is a very unique electronic property that
has excited the physics and device community leading to numerous possibilities in nanoelectronics. CNTs also
exhibit extraordinary mechanical properties. The Young’s modulus is over 1 TPa and the tensile strength is
about 200 GPa. The thermal conductivity can be as high as 3000 W/mK. With an ideal aspect ratio, small tip
radius of curvature and good emission properties, CNTs also have proved to be excellent candidates for field
emission. CNTs can be chemically functionalized, i.e. it is possible to attach a variety of atomic and molecular
groups to the ends of sidewalls of the nanotubes.
The impressive properties alluded above have led to investigations of various applications. The most
important aerospace application is high strength, low weight composites. Investigation of metal and ceramic
matrix composites with CNTs as a constituent materials is in its infancy. A status update will be provided.
CNTs have been shown to provide desirable electrical properties for polymer matrix composites. In many
cases, the current problem is the inability to disperse the nanotubes homogeneously across the host matrix.