Definition Of Yield Stress
The value of stress at a yield point or at the yield strength.
Definition of yield stress. The yield strength is a material constant that represents the limit of its elastic behavior. Temperature dependency varies with chemistry. The critical stress that must be applied to a material before it begins to flow as in a bingham plastic. This lesson will look at the definition of yield stress and how it relates to the strain.
Yield stress is inversely proportional to temperature the relation being reasonably approximated by a straight line. What does yield stress mean. Ductile materials like iron boast higher yield strength values than plastics such as polyethylene. The stress divided by the strain is no longer constant.
In other words the minimum stress required to make a material flow is the yield stress and it is a measure of the strength of the material structure. The magnitude of stress at which this transition occurs is known as the material s yield stress or strength. The lowest stress at which extension of a tensile test piece increases without increase in load. Although the majority of low alloy api tubular grades have behavior that may be fit with a single curve the chrome products and any proprietary high alloy steels can vary noticeably in their sensitivity to temperature increase.
Yield stress synonyms yield stress pronunciation yield stress translation english dictionary definition of yield stress. Information and translations of yield stress in the most comprehensive dictionary definitions resource on the web. Many materials do not indicate a defined yield stress and in such cases the proof stress is used. Yield stress is the amount of stress that an object needs to experience for it to be permanently deformed.
Yield stress refers to the minimum stress at which a material will deform without significant increase in load. N the stress level at which a metal or other material ceases to behave elastically. If the decrease occurs at a constant yield stress then the fracture stress and fracture mode will vary more example sentences.