Today's KNOWLEDGE Share:
The main properties of composite materials
As you may know, the characteristics/properties of composite materials resulting from the combination of reinforcement and matrix depend on: the proportions of reinforcements and matrix, the form of the reinforcement, and the fabrication process.
But what are the most remarkable properties of these materials?
- Composite materials generally possess very high specific mechanical properties.
- Composite materials do not yield: their elastic limits correspond to the rupture limit.
- Composite materials have high strength under fatigue loads.
- Composite materials age under the action of moisture and heat.
- Composite materials do not corrode, except in the case of contact aluminum with carbon fibers in which galvanic phenomenon creates rapid corrosion.
- Composite materials are not sensitive to the common chemicals used in engines: grease, oils, hydraulic liquids, paints and solvents, petroleum. However, cleaners for paint attack the epoxy resins.
- Composite materials have medium- to low-level impact resistance (inferior to that of metallic materials).
- Composite materials have excellent fire resistance as compared with the light alloys with identical thicknesses. However, the smoke emitted from the combustion of certain matrices can be toxic.
Bibliographical Reference:
Composite Materials Design and Applications - Page 16
Source:#managingcomposites/#thenativelab
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