Materials Flashcards
1
Q
Hooks law
A
Extension is directly proportional to force applied up to the limit of proportionality (f=kΔl)
2
Q
Plastic matetial
A
When a material is permanently defirmed when load is removed
3
Q
Elastic matetial
A
Material returns to original shape when liad is removed
4
Q
Elastic limit
A
The ekastic limit of a wire is the maximum force applied without the wire being perminantly deformed
5
Q
Stiff vs strong force/extension graph
A
strong has a high ultimate stress
Stiff gas a steep gradient
6
Q
Tensile stress
A
The ratio of load to crosssectionak area due to stretching
7
Q
Tensile strain
A
Ratio if extension to original length
8
Q
Youngs modulus
A
Ratio of tensile stress tp tendile strain inside the hooks law region
