Aluminum in Aircraft Manufacturing Quiz
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Questions and Answers

What is a disadvantage of using aluminium alloys in aircraft structures?

  • Low mechanical properties at elevated temperature (correct)
  • High susceptibility to electromagnetic interference
  • High cost of production
  • High resistance to stress corrosion cracking

    • What is a characteristic of aluminum alloys that makes them suitable for aircraft structures?

  • High specific stiffness and specific strength (correct)
  • Low ductility and fracture toughness
  • Low fatigue resistance
  • Low density of 7 g cm−3

    • What is a disadvantage of using aluminum alloys when in contact with carbon-fiber composites?

  • Increased mechanical properties
  • Corrosion (correct)
  • Improved fatigue resistance
  • Enhanced ductility

    • How are aluminum alloys classified?

    <p>Casting alloys, wrought non-heat-treatable alloys, or wrought heat-treatable alloys</p> Signup and view all the answers

    What happens to age-hardenable aluminum alloys during welding?

    <p>Cannot be easily welded</p> Signup and view all the answers

    Explain the disadvantages of using aluminum alloys in aircraft structures at elevated temperatures.

    <p>Low mechanical properties at elevated temperature and susceptibility to stress corrosion cracking.</p> Signup and view all the answers

    What are the drawbacks of aluminum alloys when in contact with carbon-fiber composites?

    <p>Corrosion when in contact with carbon-fiber composites.</p> Signup and view all the answers

    What are the characteristics of aluminum alloys that make them suitable for aircraft structures?

    <p>High specific stiffness and specific strength, ductility, fracture toughness, and fatigue resistance.</p> Signup and view all the answers

    How are aluminum alloys classified?

    <p>Aluminum alloys are classified as casting alloys, wrought non-heat-treatable alloys, or wrought heat-treatable alloys.</p> Signup and view all the answers

    What types of aluminum alloy are used in their as-cast condition without any mechanical or heat treatment?

    <p>Casting alloys.</p> Signup and view all the answers

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