Mechanical Engineering Fourth Year Marks Distribution Quiz
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Questions and Answers

What is the first critical step in the failure analysis procedure?

  • Detection, collect data, and describe the failure situation (correct)
  • Visual examination of the damage
  • Examine and analyze samples
  • Photograph the failure in several angles before destruction for examination

    • What method can be used to evaluate the magnitude of stress based on the loading situation?

  • Metallographic examination (correct)
  • Non-destructive testing (NDT)
  • Properties testing
  • Chemical analysis

    • What does microanalysis using energy dispersive X-ray spectroscopy (SEM/EDX) analyze?

  • Grain size and phase present
  • Inclusions and phases (correct)
  • Fracture modes
  • Corrosion products

    • What may be a cause of failures according to Dr. Reham Reda Abbas?

    <p>Mechanical design fault</p> Signup and view all the answers

    What does 'correct design' involve according to Dr. Reham Reda Abbas?

    <p>Designing for maximum stress including safety factor</p> Signup and view all the answers

    What can affect the strength of quenched and tempered materials at higher temperature?

    <p>Loss of strength</p> Signup and view all the answers

    What creates gas porosity and cracks according to Dr. Reham Reda Abbas?

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

    What may be created by cold working and forging according to Dr. Reham Reda Abbas?

    <p>Cracks, flaws, and distortion</p> Signup and view all the answers

    What are the possible root causes of failures in the failure analysis procedure?

    <p>Improper material selection and fabrication defects</p> Signup and view all the answers

    What is used to analyze the phases, inclusions, and corrosion products?

    <p>Energy dispersive X-ray spectroscopy (SEM/EDX)</p> Signup and view all the answers

    Which of the following is NOT an example of a harsh environment that commonly induces material failure?

    <p>Low humidity environment</p> Signup and view all the answers

    What is the primary process of failure analysis?

    <p>Collecting data and analyzing it to determine the root cause of a failure</p> Signup and view all the answers

    Which of the following is a mechanism of failure due to overload?

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

    What are examples of operating conditions that frequently cause material failure?

    <p>Impact and vibration</p> Signup and view all the answers

    In failure analysis, what are environmental conditions and operating loads often considered as?

    <p>Primary causes leading to material failure</p> Signup and view all the answers

    What is the purpose of a failure analysis report?

    <p>To provide recommendations for improving product design</p> Signup and view all the answers

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