Characteristics Of Properties Flashcards
Name the properties that we can use to describe materials.
- Mechanical Properties
- Thermal Properties
- Electrical Properties
- Optical Properties
- Chemical Properties
What is mechanical property?
properties that describes how a material responds to applied loads or forces
What is thermal property?
properties related to its conductivity of heat
What is electrical property?
properties related to a material’s ability to conduct electric current
What is optical property?
describes a material’s behavior when electromagnetic radiation (light) is incident on the material’s surface
What is chemical property?
the ability of a substance to undergo a specific chemical change
What is magnetic property?
the atomic or subatomic response a material to an applied magnetic field wherein the electron spin and charge create a dipole moment and a magnetic field
What is biocompatibility?
The ability of a material to interact harmoniously with living tissues without causing harm or
rejection.
Give examples of mechanical properties:
- Strength
- Stiffness
- Ductility
- Hardness
- Malleability
- Resilience
A part was subjected to constant stress at very high temperatures for a long time. What will happen?
It will undergo a slow and permanent deformation called creep
What kinds of materials are sensitive to creep?
Plastics, rubber and amorphous materials
What’s the most common type of creep deformation
viscous flow
Give examples in which we need to consider creep/
Designing IC engines, boilers, and turbines
What’s strength?
ability of a material to withstand an applied force without deformation or failure
What’s stiffness?
The resistance of a material to deformation when subjected to an external load.
What’s ductility?
The extent to which a material can be stretched or bent without breaking.
What’s hardness?
A measure of a material’s resistance to indentation or scratching.
What’s malleability?
the ability of materials to be rolled, flattened or hammered into thin sheets
without cracking by hot or cold working.
What’s resilience?
The property of a material to absorb energy and to resist shock and impact loads.
What are the types of strength?
- Tensile strength: maximum load that a material can support without fracture when being stretched,
- Compressive strength (withstand loads)
- Shear strength: ability to resist forces that cause the material’s internal structure to slide against itself
What’s Coefficient of Thermal Expansion (CTE)?
A measure of how much a material expands or contracts
with changes in temperature
Why is CTE important?
Important in designing structures that experience temperature variations.
What are the electrical properties?
- Conductivity
- Dielectric Strength
- Resistivity
What’s conductivity?
The ease with which a material allows the flow of electrical current.
What’s Dielectric Strength?
The ability of an insulating material to withstand an electric field without
breaking down.
What’s Resistivity?
A measure of a material’s opposition to the flow of electrical current.
What are the optical properties?
- Transparency
- Reflectivity
What’s index of refraction?
A measure of how much a material bends or refracts light.
What’s corrosion resistance?
A material’s ability to resist deterioration due to chemical reactions with its environment.
What’s chemical Reactivity?
How readily a material reacts with other substances
What’s magnetization?
The ability of a material to become magnetized when exposed to a magnetic
field.
What’s Magnetic Permeability?
A measure of how a material responds to a magnetic field.
What do you call the temperature in which a ferromagnetic material loses its magnetization?
Curie Temperature
