9/17/2023 0 Comments Ashby Diagram SoftwareFor example, when the material should be both stiff and light, for a rod a combination of high Young's modulus and low density indicates the best material, whereas for a plate the cube root of stiffness divided by density E 3 / ρ is the best indicator. Systematic selection for applications requiring multiple criteria is more complex. Some of the important characteristics of materials are : strength, durability, flexibility, weight, resistance to heat and corrosion, ability to cast, welded or hardened, machinability, electrical conductivity, etc. It is essential that a designer should have a thorough knowledge of the properties of the materials and their behavior under working conditions. For example, a thermal blanket must have poor thermal conductivity in order to minimize heat transfer for a given temperature difference. Material selection is often benefited by the use of material index or performance index relevant to the desired material properties. Systematic selection of the best material for a given application begins with properties and costs of candidate materials. In the context of product design, the main goal of material selection is to minimize cost while meeting product performance goals. Material selection is a step in the process of designing any physical object.
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