Mechanical Engineering Fatigue Failure and Design Quiz
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Questions and Answers

What type of stresses are components subjected to in dynamic loads?

  • Cyclic stress (correct)
  • Constant stress
  • Random stress
  • Tensile stress
  • Which test provides useful values for material selection and component dimensioning for statically loaded components?

  • Compression test
  • Cyclic stress test
  • Fatigue test
  • Tensile test (correct)
  • What is the term used for failure in application due to the applied load on the material?

  • Dynamic stress
  • Cyclic stress
  • Fracture
  • Permanent deformation (correct)
  • Which chapter discusses the 'Fatigue Failure Criteria'?

    <p>Chapter 4: Fatigue Failure and Design Against Fatigue</p> Signup and view all the answers

    What types of loads cause not only constantly changing stress intensity but also changing direction of stress?

    <p>Dynamic loads</p> Signup and view all the answers

    Which factor affects fatigue properties according to the text?

    <p>Temperature</p> Signup and view all the answers

    What is the term for the failure of materials subjected to repeated loading and unloading, even at low loads?

    <p>Fatigue failure</p> Signup and view all the answers

    Under what conditions does fatigue failure normally occur?

    <p>After a lengthy period of repeated stress or strain cycling</p> Signup and view all the answers

    What type of stress is required for fatigue to occur?

    <p>Only tensile stress</p> Signup and view all the answers

    Which type of failure is characteristic of fatigue failure?

    <p>Catastrophic failure</p> Signup and view all the answers

    In which type of components or structures is fatigue failure a common phenomenon?

    <p>Biomedical implants</p> Signup and view all the answers

    What is the term for the fluctuating stress-time mode where the amplitude is symmetrical about a mean zero stress level?

    <p>Reversed (pure alternating) stress cycle</p> Signup and view all the answers

    What is the term for the fluctuating stress-time mode where the maximum and minimum stresses are asymmetric?

    <p>Asymmetric stress cycle</p> Signup and view all the answers

    What type of deformation is associated with fatigue failure?

    <p>Gross plastic deformation</p> Signup and view all the answers

    In what direction is the fracture surface usually oriented in fatigue failure?

    <p>Perpendicular to the direction of an applied tensile stress</p> Signup and view all the answers

    What are some common examples of components prone to fatigue failure?

    <p>Crankshafts, drive shafts, gears, springs</p> Signup and view all the answers

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