Lec 7 - ENGR ENGR 4250 Advanced Materials Engineering...

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ENGR 4250 ENGR 4250 – dvanced Materials Engineering Advanced Materials Engineering cture 7 Lecture 7 Material Selection Instructor: Ghaus Rizvi
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Classes of Property • Economic: Price and availability, recyclability eneral Physical: ensity General Physical: Density • Mechanical: Modulus, Yield and tensile strength, Hardness, Fracture toughness, Fatigue strength, Creep strength, Damping. •T h e r m a l : Thermal conductivity, Specific Heat, Thermal exp. Coeff. • Electrical and Magnetic: Resistivity, Dielectric constant, Magnetic permeability • Environmental : Oxidation, Corrosion, Wear d t i • Production: Ease of manufacturing, Joining, Finishing • Aesthetic: Colour, Texture, Feel
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Engineering Materials 1 Third Edition M.F. Ashby D.R.H. Jones Elsevier 2005
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Price Fluctuations Ashby: 2005
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Ashby: 2005
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Ashby: 2005
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Ashby: 2005
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Ashby: 2005
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Usage of Engineering Materials Ashby: 2005
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Case Study – Beam of a given stiffness ith minimum weight with minimum weight 3 4 F l 4 Et = δ or square cross ction For square cross-section Ashby: 2005
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Case Study – Beam of a given stiffness ith minimum weight with minimum weight 3 4 F l 4 Et = δ or square cross ction For square cross-section ρ 2 lt M = Ashby: 2005
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Lec 7 - ENGR ENGR 4250 Advanced Materials Engineering...

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