Mechanical Properties Flashcards
List 7 mechanical properties
- Hardness
- Resilience
- Malleability
- Ductility
- Rigidity or Stiffness
- Corrosion Resistance
- Brittleness
Define Hardness
Resist deformation (denting, abrasion) when hit or scratched
Define resilience
resist shock and impact (deformation)
Define malleability
ability to be shaped without breaking
Define ductility
pulled into a wire or stretched without breaking
define stiffness/rigidity
ability to keep shape when subjected to various constraints
define corrosion resistance
resists smoke, salt, chemical products and oxidation (rusting)
define brittleness
Ability to shatter upon impact
List the 5 constraints
- Tension
- Compression
- Bending/deflection
- Torsion
- Shearing
Describe tension
Tension is a contact force and evidently, it stretches or pulls the object
describe compression
It pushes towards the object making it squeeze or even crushing it completely.
Describe bending/deflection
It’s a force that tends to cause a area to rotate or “bend” so that the straight area tends to assume a curved profile
describe torsion
twisting
describe shearing
A force that causes one part of a material to move opposite of the other, must be sharp and be able to slice
define the word constraint
a type of force or stress on an object
List the 3 types of deformations
- Elastic
- Plastic
- Fracture
define elastic deformation
returns to its original shape after stress
define plastic deformation
does not return to its original shape after stress. cannot be shaped
define fracture deformation
it breaks :(
