Composites, wood and ceramics
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- Created on: 11-01-15 10:37
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- Composites, wood and ceramics
- Composites
- Composites contain a mixture of different materials that bond together.
- A tough material is not brittle. Glass is strong but brittle. Plastic is weak but tough.
- Adding glass fibres to plastic makes a strong but , tough composite ideal for boat hulls
- Wood
- Wood is a natural composite containt cellulose fibres mbedded in the lignin
- Cellulose has tensile strength and lignin resists compression
- Although used mainly in the construction of houses and funiture, many types of sports equipment are produced from wood
- Besides being strong and light , it is tough and shock- resistant, so the wood dampens vibrations when you hit the ball
- Ceramics
- Ceramics are inorganic, non-meatallic materials
- Pottery (made of clay)
- Glass
- Hard
- Are brittle ( can crack easily and are not tough)
- Have a high melting point
- Have a low thermal conductivity
- resist chemical attack
- Ceramics are inorganic, non-meatallic materials
- Testing for toughness
- Scientists can use the IZOD TEST to compare the toughness of different materials and how the materials fractures on impact
- Composites
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