Question

Which of the following is correct?

(a) Corrosion is major problem in terms of material lifespan

(b) Corrosion cannot be considered as major factor at all

(c) Lift on corrosive material will always be same as weight

(d) Weight of corrosive material will always be same as thrust loading

This question was posed to me at a job interview.

My question comes from Structures in division Structures and Loads of Aircraft Design

Answer 1

Right choice is (a) Corrosion is major problem in terms of material lifespan

The best I can explain: Since the early days of aviation, corrosion of materials has been a major problem. Aircraft materials are exposed to salt water spray, atmospheric moisture, fuels, oils, exhaust, plumes etc. Stress corrosion can lead to fracture at a stress level one tenth of normal ultimate stress.