engineering materials material used by engineers for their products types metals timber ...
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Engineering Materials
Material used by Engineers for their Products
TypesMetalsTimberReinforced ConcreteBituminous mixturesClay productsMasonry materialsPlastics
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Metals
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Timber
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Reinforced Concrete
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Bituminous mixtures
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Clay products
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Masonry materials
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Plastics
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Principle Requirements• StrengthAdequately strong to carry the intended load
• RigidityAdequately rigid not to deform under service loads
• DurabilityTo perform function during service life
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Properties of Engineering MaterialsPhysical Properties:• Shape• Brightness• Density• Absorption• Melting point• Opacity • Viscosity• Conductivity• Size or dimensions• Colour• Homogeneity
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Properties of Engineering Materials
Homogeneity
IsotropicAnisotropic
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Properties of Engineering Materials
Chemical Properties
Corrosion resistanceHygroscopy:PHReactivitySurface tension
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Properties of Engineering Materials
Electrical Properties
1. Conductivity
2. Dielectric strength
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Properties of Engineering Materials
Optical properties1. Reflectivity
2. Refractivity
3. Scattering
4. Photosensitivity
5. Luminosity
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Properties of Engineering Materials
Manufacturing Properties1. Castability
2. Extruding
3. Hardness
4. Machinability
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Properties of Engineering Materials
• Mechanical Properties
1. Strength
2. Stiffness
3. Elasticity
4. Ductility
5. Hardness