Yield (engineering)
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In materials science and engineering, the yield point is the point on a stress–strain curve that indicates the limit of elastic behavior and the beginning of plastic behavior. Below the yield point, a
A steel beam being tested for yield strength. The beam is whitewashed to show the development of yield lines.
Ultimate tensile strength
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Ultimate tensile strength is the maximum stress that a material can withstand while being stretched or pulled before breaking. In brittle materials, the ultimate tensile strength is close to the yield
Yield (engineering)
…failure mode which is normally not catastrophic, unlike ultimate failure. For ductile materials, the yield strength is typically distinct from the ultimate tensile strength, which is the load-bearing capacity for a given material. The ratio of yield strength to ultimate tensile strength is an important parameter for…
Two vises apply tension to a specimen by pulling at it, stretching the specimen until it fractures. The maximum stress it withstands before fracturing is its ultimate tensile strength.
Round bar specimen after tensile stress testing
The "cup" side of the "cup–cone" characteristic failure pattern
Some parts showing the "cup" shape and some showing the "cone" shape