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:
“Whether, if you yield not to your father’s choice,
You can endure the livery of a nun,
For aye to be in shady cloister mewed,
To live a barren sister all your life,
Chanting faint hymns to the cold fruitless moon.
Thrice blessed they that master so their blood
To undergo such maiden pilgrimage.”
—William Shakespeare (1564–1616)
“Death is an endless night so awful to contemplate that it can make us love life and value it with such passion that it may be the ultimate cause of all joy and all art.”
—Paul Theroux (b. 1941)
“He who is conversant with the supernal powers will not worship these inferior deities of the wind, waves, tide, and sunshine. But we would not disparage the importance of such calculations as we have described. They are truths in physics because they are true in ethics.”
—Henry David Thoreau (1817–1862)