Q159
Stress relaxation is the phenomenon
A.
In which parts are not loaded
B.
In which stress remains constant on increasing load
C.
In which deformation tends to loosen the joint and produces a stress reduced
AnswerD.
Stress reduces on increasing load
Answer: Option C
Solution
Answer: Option C
Solution:
Stress relaxation is a gradual reduction in stress with time at constant strain.Stress relaxation occurs in polymers when they are held in a strained state for long periods of time.
These alloys have very good resistance to stress relaxation and are therefore used as spring materials.