Materials Selection
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what are the factors to consider when selecting an appropriate material for something?
• mechanical properties (strength, stiffness, ductility, fracture toughness, fatigue, creep) • physical properties (density, melting point, thermal/electrical conductivity) • other properties such as cost, corrosion, formability
what are the four main parts of the method of selecting an appropriate material?
• translation: express design requirements as constraints and objectives • screening: eliminate materials that cannot do the job • ranking: find materials that best do the work using performance indices • research supporting info: handbooks, expert systems, web etc.
what are some ways we can graphically represent the different materials and their properties and what part of the method does this help with?
using material selection charts and material property charts - this forms part of the screening process which helps to eliminate unsuitable materials