Corrosion of materials results in ___________ of fatigue limit.
A. reduction
B. increment
C. double
D. satisfaction
I had been asked this question at a job interview.
This interesting question is from Aircraft Materials in division Testing Aircraft Materials of Aerospace Materials & Processes
Correct option is A. reduction
To explain I would say: Corrosion of a material is not a desirable quality. This is because even a small amount of it can cause a reduction of fatigue limit. Even flaws like lack of uniform cross-section in the specimen can have the same effect.