WorksheetsCorrosion in Aircraft
Total questions: 13
Worksheet time: 7mins
What are the two general forms of corrosion mentioned?
Stress and fretting corrosion
Direct chemical and electro-chemical corrosion
Microbiological and galvanic corrosion
Pitting and crevice corrosion
Which type of corrosion is more likely to occur in aircraft?
Electro-chemical corrosion
Crevice corrosion
Direct chemical corrosion
Pitting corrosion
What is a common preventative measure for electro-chemical corrosion?
Using sacrificial anodes like zinc
Applying heat treatment
Increasing the temperature
Using copper rivets
Which of the following is NOT a condition necessary for corrosion to occur?
High temperature
A metallic connector between anode and cathode
Presence of an anode and a cathode
An electrolyte such as water
What is the most common type of corrosion affecting airplanes?
Crevice corrosion
Microbiological fuel corrosion
Pitting corrosion
Stress corrosion cracking
Which material is least likely to corrode among common aircraft materials?
Steel and iron
Magnesium alloys
2000 series aluminium alloys
Graphite composites
What is a common cause of stress corrosion cracking?
High temperature exposure
Microbiological growth in fuel
Contact with saline solutions
High residual stress in parts of a metal object
Which of the following is a method to reduce fretting corrosion?
Increasing the stress on the parts
Applying a heat treatment
Using lubricating grease
Using magnesium alloy bolts
What is a suitable metal for rivets to prevent rapid corrosion?
Magnesium
Zinc
Stainless steel
Copper
Which of the following is a factor that can cause corrosion in aircraft?
Using only similar metals
Incorrect heat treatment
Absence of electrolytes
Low humidity environments
Which of the following metals is most susceptible to galvanic corrosion when paired with steel?
Aluminium
Copper
Stainless steel
Nickel
What is a common method to protect metal surfaces from corrosion in marine environments?
Painting with oil-based paints
Increasing the metal thickness
Applying a zinc coating
Using magnesium rivets
Which environmental factor is least likely to accelerate corrosion in metals?
Acidic conditions
Presence of salt
Low temperature
High humidity
