Test your basic knowledge |

Modern Material Science And Engineering

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. Point defects that result when an atom in the lattice is replaced with an atom of a different element






2. The systematic reduction in intensity of diffraction peaks from specific lattice planes






3. The first level of the structure of materials - describing the atoms present






4. The second level of the structure of materials - describing how the atoms are positioned in relation to one another as well and the type of bonding between them






5. The lowest stress level at which a slip will begin in the material






6. Composed of both the slip plane and the slip directions






7. Microscopes that focus a high- energy beam of electrons at the source and collect the back- scattered beam of these electrons






8. For a slip to occur - a sufficient amount of stress must be applied to permanently deform the material






9. A point defect found in ceramic materials that occurs when a cation diffuses onto an interstitial site on the lattice






10. A hypothetical structure accounting for irregularities in the boundaries between crystallites






11. The third level of structure in materials - describing the sequencing of crystals at a level invisible to the human eye






12. Lattice defect that occurs when the lattice is cut and shifted by a row of atomic spacing






13. A bravais lattice that has one atom in each of the 8 corners of the unit cell; less common than the other two cubic forms






14. Generalized equation used to predict the temperature dependence of various physics properties






15. Homogeneous nucleation: grain boundaries: lattice/surface interactions:






16. A numerical system used to represent specifics planes in a lattice






17. Materials whose order extends only to nearest neighbor atoms






18. The equations used to determine the critical resolved shear stress in a material


19. One of the bravais lattice that contains one atom in each corner of the unit cell as well as one atom in the center of the unit cell






20. The filling of a vancacy in the partial plane of an edge dislocation by an adjacent atom resulting in a shrinking of the crystal in the direction perpendicular to the partial plane






21. Point defects that result from the absence of an atom at a particular site






22. A numerical quantity developed by the American Society for Testing and Materials (ASTM) to characterize grain sizes in materials






23. The direction that dislocation moves in






24. The presence of both screw and edge dislocations separated by a distance in the same lattice






25. A means of relating the amount of spreading in a X- ray diffractogram to the thickness of the crystallites in the sample






26. Large scale lattice defects that occur from alterations to the structure of the lattice itself






27. New planes formed after the material has undergone slip






28. The line extending along the extra partial plane of atoms in an edge dislocation






29. The interaction of waves






30. A mathematical representation of the magnitude and direction of distortions in a lattice caused by dislocations






31. The second step in the formation of crystallites - which is dependent on temperature and can be described using the arrhenius equation






32. The fourth level of structure in materials - describing how the microstructures fit together to form the material as a whole






33. The use of light to magnify objects up to 2000 times






34. A standard used to measure the spread in the peak of a diffractogram - measures at the intensity value corresponding to the half highest value in the peak






35. The first set of panes in a material to experience slip under an applied stress






36. A specific set of h






37. Provides a framework for the new atoms to follow in constructing a monocrystal






38. Regions of a material in which atoms are arranged in a regular pattern






39. Correlation used to estimate the yield strength of a given material - based on grain size






40. Formula that relates interplaner spacing in a lattice to constructive interference of diffracted X- rays


41. The clustering of atoms around an impurity that provide a template for crystal growth






42. The edge lengths and angels of a unit cell; describes the sizes and shapes of the lattices






43. Point defects that occur when an atom occupies a space that is normally vacant






44. Large - artificially produced monocrystals






45. Most common of the non - cubic bravais lattices; having six atoms forming a hexagon on both the top and bottom and a single atom positioned in the center - between the two hexagonal rings






46. Lattice defects caused by the addition of a partial plane into an existing lattice structure






47. The size - shape - and arrangement of atoms in a three- dimensional lattice






48. The smallest subdivision of a lattice that still contains the characteristics of that lattice






49. A point defect that occurs in ceramics when both a cation and an anion are missing from a lattice






50. A flaw in the structure of a material that occurs at a single site in the lattice - such as vacancies - substitutions - and interstitial defects