Testing Materials Flashcards
Possible variables in materials
Size, environmental conditions, testing equipment, force applied, method of force application, position of force application, individual taking measurements.
Industrial tests: destructive testing
- Tensile testing
- Toughness testing
- Hardness testing
- Malleability and Ductility
Tensile testing
Stretching/pulling, Tensometer. Test for the tensile strength by putting between two grips and pulling apart.
Toughness test
Charpy impact test. Checking for elasticity of a material and how much energy it absorbs.
Hardness testing
Rockwell hardness test. Impact, denting and scratching. Diamond indenter, so won’t deform. F1-10kp F2-140kp
Malleability and ductility
Malleability- change and test by heating
Ductility- a series of dyes to reduce the diameter
Copper tensility
High necking as it is a ductile material. Cup and cone section type.
F1140 Steel
Very little necking as it’s a brittle material. Almost flat fractured surface
Aluminium
Little necking, not very ductile. Cup and cone less pronounced.
A151 316
Most necking extremely ductile material. Cup and cone very pronounced.
Workshop tests
- Tensile testing
- Toughness testing
- Hardness testing
- Malleability and Ductility testing
- Corrosion testing
- Conductivity testing
Non destructive testing
- Ultra sonic
- X-ray
- Electrical conductivity
- Thermal conductivity
- Visual test
More tests
Metallurgical testing- % of an alloy
Mechanical testing- moving/rotation
Dimensional inspection- lasers
Fracture mechanics- internal fractures
Calibration services- accuracy, precision of the machine
