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Material Science Practice Test: Failure
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Material Failure topics include: Failure fundamentals, ductile and brittle fracture, fracture mechanics, fatigue, fracture tests, creep and high temperature alloys. Material failure is a technical term in engineering that describes when a material used in a design no longer performs its intended purpose. It can be caused by a number of factors, including: Stress concentration: When the load on a material is unevenly distributed Corrosion: The gradual degradation of a material's properties due to chemical reactions with its environment Incorrect material selection  Material failure can be... Show more
Material Science Practice Test: Failure
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25 Questions

1. Which of the following properties is impact strength indicative of?
2. Which of the following is not a zone of fatigue fracture?
3. The direction of a blow of hammer is opposite to the notch section in case of Izod test.
4. Material subjected to only tensile force even during necking.
5. Which of the following fracture mechanisms in which the crack propagates more rapidly?
6. Which of the following elements reduce fracture toughness in steel?
7. What is the dimension of material used in case of Charpy test?
8. Which of the following decreases transition temperature in steel?
9. What is the unit of impact strength?
10. Which of the following cannot be a reason for ductile failure?
11. Which of the following is true?
12. Which of the following is a high temperature alloy resistant to?
13. Surface energy of the specimen increases when the crack lengthens.
14. What is the amount of strain in a stable neck is called?
15. Below which point does brittle fracture occur?
16. Which of the following is associated with minimum plastic deformation?
17. Which of the following is the Charpy V impact strength for annealed pure copper?
18. Improper heat treatment can cause mechanical failure.
19. What is the nature of the curve of a viscous creep?
20. What is the speed of the motor in rotating beam fatigue test?
21. After which point is necking observed?
22. At what temperature is steel ductile?
23. For polymers close to glass transition temperature which of the following can be a value of G?
24. In Wohler’s Fatigue test, how many cycles can cast iron to be subjected to before failure?
25. When hot water is poured into the cold glass, the glass may crack.