Yield & Ultimate Calculations
For ductile materials (e.g. most metals), it is often required that the factor of safety be checked against both yield and ultimate strengths. The yield calculation will determine the safety factor until the part starts to plastically deform. The ultimate calculation will determine the safety factor until failure. On brittle materials these values are often so close as to be indistinguishable, so is it usually acceptable to only calculate the ultimate safety factor.
Read more about this topic: Factor Of Safety
Famous quotes containing the words yield, ultimate and/or calculations:
“You win the victory when you yield to friends.”
—Sophocles (497–406/5 B.C.)
“Your death, dear Lady, was quite cold
For all the brave tears and ultimate spasm.
So civilized were your thin hands, I marvel
They too, like jelly fishes, came from protoplasm.”
—Allen Tate (1899–1979)
“Nowhere are our calculations more frequently upset than in war.”
—Titus Livius (Livy)