Materials Selection Laboratory

Materials Selection Laboratory - perspective. For these we...

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M ATERIALS D ESIGN Materials Selection: General Role of Materials Selection There are more than 50,000 materials available to an engineer Need a rational procedure to select materials Role of Materials Selection in DESIGN When designing a new material, you need a place to start Identifying & Quantifying the properties that are needed will direct you to a particular class of materials
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Materials Selection • Role of Materials Selection – There are more than 50,000 materials available to an engineer – Need a rational procedure to select materials • Role of Materials Selection in DESIGN – When designing a new material, you need a place to start – Identifying & Quantifying the properties that are needed will direct you to a particular class of materials Metals Ceramics Polymers Electronic Materials Hybrids Materials Classes
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Designing Hybrids
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Relationships, perspective and comparisons Material bar-charts Material property charts Data sheets do not allow comparison,
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Unformatted text preview: perspective. For these we need Metals Polymers Ceramics Hybrids PEEK PP PTFE WC Alumina Glass CFRP GFRP Fibreboard Young’s modulus, GPa Steel Copper Lead Zinc Aluminum 10 3 10-3 10-2 10-1 10 2 10 1 Log scale Many decades Materials Selection Chart (Ashby Chart) 100 1 10 100 10 1 0.1 1000 Density (Mg/m 3 ) Young’s Modulus (GPa) 0.01 Metals Ceramics Composites Woods Polymers Elastomers Foams 0.1 Implications of the chart scale Since the charts are plotted on log-log scale M 1 = E 1 2 ρ log M 1 = 1 2 log E − log log E = 2log + 2log M taking logs, re-arrange, Y-axis X-axis slope * figure obtained from www.grantadesign.com M ATERIALS D ESIGN M ATERIALS D ESIGN M ATERIALS D ESIGN The Mechanical Efficiency of Natural Materials Virtually All Natural Materials are Composites M ATERIALS D ESIGN M ATERIALS D ESIGN M ATERIALS D ESIGN M ATERIALS D ESIGN M ATERIALS D ESIGN...
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This note was uploaded on 11/16/2011 for the course EMA 4223 taught by Professor Mecholsky during the Spring '08 term at University of Florida.

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Materials Selection Laboratory - perspective. For these we...

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