Chapter 3 Flashcards
Hardness test
A materials resistance to permanent deformation, indentation or scratching.
Flexure
The application of a force that causes the bending of an object.
Compression
The force of a load applied axially on an object in a squeezing manner.
Shear
Is the application of 2 equal and parallel forces on an object from opposite directions.
Tension
The force of a load applied axially on an object in a stretching manner.
Torsion
The application of twisting force on an object.
Fracture toughness
The resistance of metals to brittle fracture propagation in the presence of stress raisers.
Fatigue
The failure of a material under cyclic stresses that have a max. Value less than the static tensile strength of the material.
Dynamic capacity
The dynamic load capacity is a value which has a unit of ‘N’ or’kN’ (Newtons or Kilo Newtons). The dynamic load capacity can be defined as the load that will give a life of one million revolutions of the inner race.
Toughness
The ability of a metal to absorb energy and deform plastically before fracturing.
Tensile test
A static test that measures the effects of a tensile force on a material.
Compression test
Very common testing method that is uses to establish the compressive force or crush resistance of a material and the ability of the material to recover after a specified compressive force is applied and even held over a defined period of time.
Ductility test
Is simply the strain to fracture
Torsion test
A statice test that measures a materials resistance to shear.
Static test
The load is applied slowly enough so that the speed of testing has a negligible effect on the results.
