Question

The amount of test cycles required to find out the fatigue stress of hard aluminium alloys is ____________

(a) 64,000,900,000

(b) 500,000,000

(c) 3000

(d) 27

I have been asked this question during a job interview.

The doubt is from Aircraft Materials in chapter Testing Aircraft Materials of Aerospace Materials & Processes

Answer 1

Correct option is (b) 500,000,000

To elaborate: A huge number of test cycles are required to determine the fatigue strength of a material. The number of cycles required for aluminium alloys is 500,000,000. It is the same for magnesium alloys as well.