Materials Flashcards
1
Q
What is Hooke’s Law?
A
Extension produced is directly proportional to the force that’s causing the extension, up to the limit of proportionality.
2
Q
What is the elastic limit?
A
The point at which a material will no longer return to its original shape / length.
3
Q
What does the area under a force-extension graph represent?
A
Energy
4
Q
What is the Young Modulus?
A
Material constant used to work out how a material will perform under a load.
Tensile stress / tensile strain
5
Q
What is tensile stress?
A
Stress = Force / Cross-sectional area
6
Q
What is tensile strain?
A
Strain = Extension / Original length
7
Q
What is the gradient of a Stress-Strain graph?
A
The Young Modulus.
8
Q
What is the property of a plastic material?
A
Very small elastic region, lots of strain for little stress.
