Mechanical Fatigue

Question 1

Fatigue will not occur in CS if stresses are below the:

Answer 1

Endurance limit

Question 2

Which Conditions contribute to mechanical fatigue

Answer 2

ANYTHING THAT COULD CAUSE OR HELP A CRACK TO GROW.

Temp - not a factor
Steel Properties: Dirty Steal
Grain Structure: Course
Surface condition: Notches
Process ph: Not a factor

Question 3

The endurance limit is usually about:

Answer 3

40-50% of a material’s ultimate tensile strength

Question 4

Which material does not have an endurance limit?

Answer 4

Stainless Steel