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:
“Is it not the chief disgrace in the world, not to be an unit;Mnot to be reckoned one character;Mnot to yield that peculiar fruit which each man was created to bear, but to be reckoned in the gross, in the hundred, or the thousand, of the party, the section, to which we belong; and our opinion predicted geographically, as the north, or the south?”
—Ralph Waldo Emerson (1803–1882)
“By a route obscure and lonely,
Haunted by ill angels only,
Where an eidolon, named Night,
On a black throne reigns upright,
I have reached these lands but newly
From an ultimate dim Thule—
From a wild weird clime that lieth, sublime,
Out of space—out of time.”
—Edgar Allan Poe (1809–1849)
“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)