define elastic limit yield point and strength
Answers
Elastic Limit and Yield Point may convey the same state of material that is but the latter is used for an engineering convenience.
Elastic limit is a value of stress upto which material can be deformed elastically under load, after unloading it will return to it's original dimension. Beyond elastic limit, material will start deform plastically which is characterized with permanent deformation. It is marked by the breakage of bonds. Technically, it is a stress at which first of such bond breaks. Limitations of measuring such delicate phenomena has made engineers to define another point at which permanent deformation can be measured which is known as Yield Point (Offset).
Answer:
Elastic limit - the point till which the wire retains its original length after the force is withdrawn. Yield point - the point where there is a large permanent change in length with no extra load force.