Chapter 1 Review Flashcards
What is the Big Picture of Material Science/Engineering?
Mapping material composition (chemical makeup) and structure (atomic arrangement) to physical properties and how we can use processes to alter said atomic structure to change the derived properties.
Composition + Structure = Properties
What is material composition?
The chemical makeup of the material
The ‘Stuff’ that comprises the material
What is material structure?
The arrangement of atoms, as seen at different levels of detail
The atomic orderedness
What is synthesis with respect to materials?
A process that alters the composition of the material.
Chemically altering the ‘Stuff’
What is proccessing of materials?
A process that alters the atomic structure of the material
What is the typical classification system for materials?
Metals/Alloys
Ceramics/Glass
Polymers
Semiconductors
Composites
Why use Metals/Alloys?
High strength
High Stiffness
Good Conductivity
High Ductility
Why use Ceramics/Glass?
Incredibly Heat Resistant
Easily Molded / Manufactured
Good Compression Strength
Ceramic is Inorganic Crystalline
Glass is Inorganic Amorphous
Why use Composites?
Light Weight
Good Strength / Weight Ratio
Highly Customizable
Typically Expensive
Why use Polymers?
Cheap To Mass Produce
(Typically) Organic Material
Good Electric & Thermal Insulators
Good Strength / Weight Ratio
Generally Resistive to Corrosion
What is polymerization?
large compounds (polymers) are built by joining smaller ones (monomers) together
What kind of polymer structures exist?
Thermoplastic (spaghetti)
Thermosets (Chain-Linked Fence)
What is stress?
A load or force per unit area
What is strain?
Percent of elongation or change in current dimension divided by original dimension
If the strain goes away after the load or stress applied is removed, the strain is said to be ________
Elastic (stress & strain linearly related by Youngs Modulus)
