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






2. The ease with which a material deforms without breaking






3. A statistical table based on the degrees of freedom and the level of uncertainty in a set of reported sample values






4. 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






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






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






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






8. 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


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






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






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






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






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






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






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






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






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






18. Failure because of repeated stresses bellow the yield strength






19. The study of crack growth leading to material failure






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






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






22. 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






23. The fracture toughness above the critical thickness in which the width of the material no longer impacts the fracture toughness






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






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






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






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






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






29. The sudden decrease in cross - sectional area of a region of a sample under a tensile load






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






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






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






33. Materials that can plastically deform without breaking






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






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






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






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






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






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






40. 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






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






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






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






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






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






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






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






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






49. The degree of certainty in an estimate of a mean






50. 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