Engineering Materials

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Presentation transcript:

Engineering Materials Material used by Engineers for their Products Types Metals Timber Reinforced Concrete Bituminous mixtures Clay products Masonry materials Plastics

Metals

Timber

Reinforced Concrete

Bituminous mixtures

Clay products

Masonry materials

Plastics

Principle Requirements Strength Adequately strong to carry the intended load Rigidity Adequately rigid not to deform under service loads Durability To perform function during service life

Properties of Engineering Materials Physical Properties: Shape Brightness Density Absorption Melting point Opacity Viscosity Conductivity Size or dimensions Colour Homogeneity

Properties of Engineering Materials Homogeneity Isotropic Anisotropic

Properties of Engineering Materials Chemical Properties Corrosion resistance Hygroscopy: PH Reactivity Surface tension

Properties of Engineering Materials Electrical Properties Conductivity Dielectric strength

Properties of Engineering Materials Optical properties Reflectivity Refractivity Scattering Photosensitivity Luminosity

Properties of Engineering Materials Manufacturing Properties Castability Extruding Hardness Machinability

Properties of Engineering Materials Mechanical Properties Strength Stiffness Elasticity Ductility Hardness