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Modern Material Science And Engineering 4
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Modern Material Science And Engineering 4
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25 Questions

1. Stresses that act perpendicularly to the direction of the crack - causing the crack ends to pull apart and opening the crack further

2. The amount of flexural stress a material can withstand before breaking. measured through the bend test

3. Stress values not involving the presence of stress raisers in the material

4. A curve plotting the results of testing multiple samples at different stress levels that used to to determine the fatigue life of a material at a given stress level

5. A limit placed on the accuracy of a reported mean - based on the number of samples tested - the standard deviation - and the desired level of confidence

6. A method used to measure the flexural strength of a sample

7. The stress at the highest applied force on a stress - strain curve

8. Materials that can plastically deform without breaking

9. Term that accounts for the increased stress applied to an elliptical crack whose length is much greater than its width

10. A nonlinear - qualitative scaled used to evaluate the resistance of a materials surface to penetration by a hard object

11. Failure because of repeated stresses bellow the yield strength

12. The region on a stress - strain curve in which no permanent changes to the material occur

13. The transition of some metals in which a change in temperature causes them to transform between ductile and brittle behavior

14. The application of stress perpendicular to a crack - wich pulls the top and bottom potions in opposite directions

15. The stress at which the material breaks completely during tensile testing

16. An estimate of the transition between elastic stretching and plastic deformation for a material without a linear region stress - strain curve

17. The ratio of applied load to cross - sectional area

18. A single blow test names after Charpy in which a notched test sample is broken by a swinging pendulum

19. The ease with which a material deforms without breaking

20. The study of crack growth leading to material failure

21. A ratio of the force applied to a sample and the instantaneous length of the chain to the initial length of the chain

22. The region on the stress - strain curve in which the material has experienced a change from which it will not completely recover

23. The stage in which the rate that dislocations propagate equals the rate at which the dislocations are blocked - resulting in a fairly linear region on the strain - time plot

24. An impact test similar to the charpy test in which the sample is aligned vertically with the notch facing away from the hammer

25. A value used to determine if two distinct sets of examples are statistically different

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