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:
“If the hive be disturbed by rash and stupid hands, instead of honey, it will yield us bees.”
—Ralph Waldo Emerson (1803–1882)
“To love something as an artist ... means to be shaken not by its ultimate value or lack of value, but by a side of it that suddenly opens up. Where art has value it shows things that few have seen. It’s conquering, not pacifying.”
—Robert Musil (1880–1942)
“Heaven’s calculations don’t follow man’s calculations.”
—Chinese proverb.