Materials vocabulary 2 Flashcards
What is the symbol for strain?
ϵ
What is the symbol for natural length?
L
What is strain?
The change in length per uni length
What is the formula for strain?
e/L
Why does strain have no units?
It is a ratio
What is elasticity?
A property of materials which can regain their original shapes after being distorted (up to the elastic limit)
What is plastic?
as a property
A behavior found in materials when they are stretched past their elastic limit
If they are distorted they will not regain their original shape
What happens when a material yields?
It no longer behaves elastically
What is the yield point of a material?
The point at which it will no longer behave elastically
What is the symbol for the young modulus?
E
What is young modulus?
Stress is proportional to strain (as long as the limit of proportionality is not exceeded)
stress/strain = constant
What is the formula for young modulus?
E = stress/strain
What does UTS stand for?
Ultimate tensile strength
What is UTS?
The maximum stress an object can withstand before breaking
What is another name for UTS?
breaking stress
