Material – a solid element or compound that fulfills its function without
undergoing a chemical change; a structural element or device.
Drugs, chemicals or dyes are not considered materials
An Engineers Interest is Design
1.) Devices, tools, systems…etc., must be made of something that fulfills
design needs.
2.) “Needs” dictates a set of Properties.
3.) Properties determine the material to be used.
Example: “Incandescent Light Bulb” – Thomas Edison 1880
Glass
- prevents oxidation of Tungsten (W)
- can be frosted or clear
Sealing
Glass
Tungsten (W) filament
- heats to 2000 ºC
- high current
- high melting point
Lead (Pb)
Aluminum (Al)
Screw Fitting
Epoxy
Cheap Deformable
Wire