Testing Materials Flashcards
possible variables when testing a product
size of material
environmental conditions
testing equipment
force applied
method of force application
position of force application
industrial tests: destructive testing
tensile testing
toughness testing
hardness testing
malleability and ductility
tensile testing
tensometer, tests for the tensile strength by putting material between two grips and pulling apart.
copper tensile test
high necking
ductile material
cup and cone section type
F1140 steel
very little necking
brittle
almost flat fractured surface
aluminium
little necking
not very ductile
cup and cone but less pronounced
A151 316 (stainless steel)
most necking
extremely ductile
cup and cone very pronounced
toughness testing
charpy impact test (on a pendulum)
Checking for elasticity of a material and how much force it absorbs.
hardness testing
diamond indenter
F1= 10kp F2= 140kp
Rockwell hardness test
malleability and ductility
M - change and test by heating
D - a series of dies to reduce the diameter
workshop tests
tensile
toughness
hardness
malleability
ductility
corrosion
conductivity
non destructive testing
ultra sonic
x-ray
electrical conductivity
thermal conductivity
visual test (1st thing to do)
metallurgical testing
eg % of an alloy
mechanical testing
movement, rotation
dimensional inspection
lasers
