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Materials_Selection - Handbook Engineering Reminder •...

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1 Materials Selection Materials selection Failure of design is often related to failure of the materials to perform intended function. Designer must select materials from the thousands available. Designer must anticipate all aspects of the service environment. Important Material Properties Short Term Stiffness Damping coefficient Strength Fracture Resistance Hardness Service Temperature Range Thermal Expansion Conductivity Chemical Electrical, Optical, Magnetic Aesthetic – texture, feel Friction Long Term Corrosion/Oxidation Fatigue Wear, Erosion Creep Recycling Price Availability Density Processing methods/ease Fabricating Joining Finishing Adapted from Ashby and Jones Engineering Materials I These properties affect initial performance These properties don’t affect initial performance
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2 Materials Choices Selecting Materials M.F. Ashby Materials Selection In Mechanical Design Selection proceeds in a hierarchical way
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