Cmc
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Transcript of Cmc
![Page 1: Cmc](https://reader035.fdocuments.net/reader035/viewer/2022070321/558d4a12d8b42aaf108b4677/html5/thumbnails/1.jpg)
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Description• Consist of fibers composed of carbon atoms
• Carbon atoms are bonded together
• Combined with other materials to form a composite
• The atomic structure is similar of graphite
consisting of sheets of carbon atoms
![Page 3: Cmc](https://reader035.fdocuments.net/reader035/viewer/2022070321/558d4a12d8b42aaf108b4677/html5/thumbnails/3.jpg)
Origin and history
• 1958 Roger Bacon created high-performance carbon fibers
• were manufactured by heating strands of rayon
This process proved to be inefficient
• 1970 Carbon fiber made from a petroleum pitch
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Specific properties
• High resistance to mechanics
• Low density
• High producction price
• Resistance of external agents
• Big capacity of thermal insulation
• Resistance of the temperature variation
![Page 5: Cmc](https://reader035.fdocuments.net/reader035/viewer/2022070321/558d4a12d8b42aaf108b4677/html5/thumbnails/5.jpg)
Uses• Aeronautical industry
• Motoring industy
• Boats and bicycles
• Roller skate, tennis racket, flat
• Notebook, tripod, fishing rod
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• A group of many fibers• Made by extruding thin strands in fibers• Extremely fine• Obtained when liquid glass flows trought an
espinerette
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Origin and historyOrigin and history
• Heating and drawing glass’ techniques have been known for millennia
• Manufacturing glass fibres techniques are recent• Dubus Bonnel was the first who used it• He used it as thread
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Specific propertiesSpecific properties
• Thermal, electrical and sound insulation• Anti acids • Can stand high temperatures• Easily malleable• Density of 1.6
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Glass fibre’s usesGlass fibre’s uses
• Reinforcing material• Thermal, electrical and sound insulation• And for things like
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• Flexible• Transparent• High quality extruded glass or
plastic• Constructed by pulling a
perform to form the optical fiber
• Usual methods:– Inside vapor deposition– Outside vapor deposition– Vapor axial deposition
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DescriptionDescription
COVERING
CORE
SHEATHING
BUFFER
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Origin and history
• 1790 Chappe brothers invented the optical telegraph
• 1880 Bell patented an optical telephone system
• 1930 Lamm transmit an image of optical fibers
• 1958 The laser was introduced
![Page 15: Cmc](https://reader035.fdocuments.net/reader035/viewer/2022070321/558d4a12d8b42aaf108b4677/html5/thumbnails/15.jpg)
• Flexible• Thermal insulators• Electrical conductor• High reflector• Transmits light without
losses
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Uses• Medium for telecommunication and computer
networking • In remote sensing. • Light guides in medical and other applications • In some buildings • in decorative applications • In spectroscopy