Test your basic knowledge |

Modern Material Science And Engineering 4

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The degree of certainty in an estimate of a mean






2. A property defining a materials resistance to a blow that is measured by an impact test






3. The square root of the variance. this value provides more knowledge about the distance from the mean a random sample is likely to be






4. A period used to force the same aging processes to occur on a sample in a shorter amount of time






5. The stress at the point of transition between elastic stretching and plastic deformation






6. The study of crack growth leading to material failure






7. A method used to measure the resistance of the surface of a material to penetration by a hard object under a static force






8. Plastic deformation of a material under stress at elevated temperatures; occurs due to dislocations in the material






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






10. The number of cycles at a given stress level that a material can experience before failing






11. Cracks - voids - and other inperfections in a material that cause highly localized increases in stress






12. Method used to determine fatigue by alternating compressive and tensile forces on the sample






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






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






15. The first stage of creep - during which dislocations in a material slip and move around obstacles






16. A method used to determine the tensile strength - breaking strength - and the yield strength of a sample






17. One of the many scales used to evaluate the resistance of a materials surface to penetration by a hard object under static force






18. 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






19. The amount of energy lost as the test sample is destroyed during an impact test






20. The ratio of the elastic energy to the strain at yielding - which determines how much energy will be used for deformation and how much will be translated to motion






21. The final stage of creep - during which the rate of deformations accelerates rapidly and continues until rupture






22. Materials that can plastically deform without breaking






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






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






25. 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






26. The resistance of the surface of a material to penetration by a hard object under static force






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






28. The application of stresses parallel to a crack causing the top portion to be pushed forward and the bottom portion to be pulled in the opposite direction






29. The change in the slope of the strain - time plot at any given point during a creep test






30. The stress level below which there is a 50% probability that failure will never occur






31. Test that approximate the impact of an environmental variable on a material over time by exposing the material to a higher level of that variable for shorter times






32. A property determined by measuring the change in the length of a sample to initial length of the sample






33. A specific method of measuring the resistance of a materials surface to penetration by a hard object under a static force






34. The slope of the stress - strain curve in the elastic region. aka Young's Modulus and Tensile Modulus






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






36. The ratio of the maximum stress to the applied stress






37. A value used to characterized creep based on time - temperature - and material- specific constants






38. The value that the stress concentration factor must exceed to allow a crack to propogate






39. The area contained under the elastic portion of a stress - strain curve - which represent how much energy the material can absorb before permanently beforming






40. A statistical quantity that takes into account the random error from a variety of sources and provides infromation about the spread of the data






41. The ease with which a material deforms without breaking






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






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






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






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






46. Relates the longitudinal deformation and the lateral deformation of material under stress

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






48. Materials that fail completely at the onset of plastic deformation. these materials have linear stress - strain curves






49. Guidelines published by the American Society for Testing and Materials that provide detailed testing procedures to ensure that tests performed in different laboratories are directly comparable






50. Failure because of repeated stresses bellow the yield strength