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:
“The important question is not, what will yield to man a few scattered pleasures, but what will render his life happy on the whole amount.”
—Joseph Addison (1672–1719)
“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)
“Now, since our condition accommodates things to itself, and transforms them according to itself, we no longer know things in their reality; for nothing comes to us that is not altered and falsified by our Senses. When the compass, the square, and the rule are untrue, all the calculations drawn from them, all the buildings erected by their measure, are of necessity also defective and out of plumb. The uncertainty of our senses renders uncertain everything that they produce.”
—Michel de Montaigne (1533–1592)