Question

What is the yield point of a material?

(a) Change in the strain of a material

(b) The ratio of proof stress to the area

(c) The elasticity of a material

(d) Point where there is a substantial increase in elongation without a rise in load

I got this question during an online exam.

Asked question is from Aircraft Materials topic in section Testing Aircraft Materials of Aerospace Materials & Processes

Answer 1

Correct answer is (d) Point where there is a substantial increase in elongation without a rise in load

The best I can explain: A materials yield point is the point where there is a significant increase in the elongation without an increment in the load. The yield point of a material can be determined in two ways – the divider method, and drop of beam method.