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Test your basic knowledge |
Intro To Engineering Materials
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 43 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. Atomic migration from a normal lattice position to an adjacent vacant lattice site or vacancy.
Vacancy Diffusion
Face- centered Cubic (FCC)
Crystalline Solid
Body- centered Cubic (BCC)
2. The curve that results when the concentration of a chemical species is plotted versus position in a material.
Lattice
Interdiffusion
Concentration Profile
Anisotropic
3. Exhibiting different values of a property in different crystallographic directions.
Lattice
Face- centered Cubic (FCC)
Anisotropic
Yield Strength
4. Product of the calculated stress level and a design factor.
Design Stress
Unit Cells
Steady- state Diffusion
Edge Dislocation
5. The manner in which atoms - ions - or molecules are spatially arranged.
Crystal Structure
Engineering Strain
Steady- state Diffusion
Diffusion Flux
6. A three- dimensional array of points coinciding with atom positions.
Engineering Strain
Interstitial Diffusion
Concentration Gradient
Lattice
7. Atomic migration from interstitial site to interstitial site. Typically happens more frequently than vacancy diffusion.
Interstitial Diffusion
Hardness
Resilience
Modulus of Elasticity
8. The instantaneous load applied to a specimen divided by its cross - sectional area before any deformation.
Toughness
Yielding
Engineering Stress
Anisotropic
9. Crystal structure with atoms located at each of the corners and the centers of all the cube faces. Coordination # = 12. APF = 0.74.
Face- centered Cubic (FCC)
Concentration Profile
Elastic Deformation
Interdiffusion
10. Time- dependent elastic deformation.
Engineering Strain
Anelastic Deformation
Anisotropic
Crystalline Solid
11. The total area under the material's tensile engineering stress - strain curve taken to fracture.
Interstitial Diffusion
Toughness
Vacancy Diffusion
Self- diffusion
12. The ratio of stress to strain when deformation is totally elastic; also a measure of the stiffness of a material.
Hexagonal Close- packed (HCP)
Modulus of Elasticity
Face- centered Cubic (FCC)
Polymorphism
13. The instantaneous applied load divided by the instantaneous cross - sectional area of a specimen.
Polymorphism
True Strain
True Stress
Solid Solution
14. Metals as well as nonmetals that have more than one crystal structure.
Elastic Deformation
Polymorphism
Modulus of Elasticity
Engineering Strain
15. The process whereby atoms of one metal diffuse into another.
Solid Solution
Interdiffusion
Nonsteady- state Diffusion
Elastic Deformation
16. Prisms having three sets of parallel faces.
Body- centered Cubic (BCC)
Unit Cells
Crystal Structure
Interstitial Diffusion
17. Linear defect associated with the lattice distortion produced in the vicinity of the end of an extra half- plane of atoms within a crystal.
Design Stress
Nonsteady- state Diffusion
Anelastic Deformation
Edge Dislocation
18. A measure of a material's ability to undergo appreciable plastic deformation before fracture; may be expressed as percent elongation (%EL) or percent reduction area (%RA) from a tensile test.
Interstitial Diffusion
Polymorphism
Ductility
Concentration Gradient
19. Material in which the atoms are situated in a repeating or periodic array over large atomic distances.
Solid Solution
Concentration Gradient
Crystalline Solid
Boltzmann's Constant
20. The slope of the concentration profile at a specific position.
Nonsteady- state Diffusion
Concentration Gradient
Yield Strength
Crystal Structure
21. Having identical values of a property in all crystallographic directions.
Elastic Deformation
Crystalline Solid
Bonding Energy
Isotropic
22. The energy required to separate two atoms that are chemically bonded to each other.
Anisotropic
Anelastic Deformation
Bonding Energy
Diffusion Flux
23. The rate of diffusion or rate of mass transfer.
Interstitial Diffusion
Elastic Deformation
Interdiffusion
Diffusion Flux
24. The diffusion condition for which there is some net accumulation or depletion of diffusing species.
Design Stress
Tensile Strength
Nonsteady- state Diffusion
Vacancy Diffusion
25. The change in gauge length of a specimen divided by its original gauge length.
Steady- state Diffusion
Edge Dislocation
Lattice
Engineering Strain
26. The natural logarithm of the ratio of instantaneous gauge length to original guage length of a specimen being deformed by a uniaxial force.
True Strain
Plastic Deformation
Interdiffusion
Engineering Strain
27. 1.38e-23
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28. Crystal structure with a hexagonal unit cell. Coordination # = 12. APF = 0.74.
Interstitial Diffusion
Tensile Strength
Hexagonal Close- packed (HCP)
Resilience
29. The maximum engineering stress - in tension - that may be sustained without fracture.
Bonding Energy
Tensile Strength
Ductility
Isotropic
30. Material transport by atomic motion.
Vacancy Diffusion
Engineering Stress
Screw Dislocation
Diffusion
31. The measure of a material's resistance to deformation by surface indentation or by abrasion.
Concentration Gradient
Boltzmann's Constant
Hardness
Bonding Energy
32. The sum of the sphere volumes of all atoms within a unit cell divided by the unit cell volume.
True Strain
Yielding
Engineering Stress
Atomic Packing Factor (APF)
33. Crystal structure with atoms located at all eight corners and a single atom at the cube center. Coordination # = 8. APF = 0.68.
Bonding Energy
Body- centered Cubic (BCC)
Ductility
Steady- state Diffusion
34. The onset of plastic deformation.
Ductility
Diffusion Flux
Anelastic Deformation
Yielding
35. The stress required to produce a very slight yet specified amount of plastic strain.
Safe Stress
Crystalline Solid
True Strain
Yield Strength
36. The diffusion condition for which there is no net accumulation or depletion of diffusing species.
Concentration Profile
Steady- state Diffusion
Nonsteady- state Diffusion
Body- centered Cubic (BCC)
37. A homogeneous crystalline phase that contains two or more chemical species.
Vacancy Diffusion
Elastic Deformation
Solid Solution
Bonding Energy
38. Deformation that is non - permanent and totally recovered upon release of applied stress.
Tensile Strength
Boltzmann's Constant
Elastic Deformation
Yield Strength
39. The capacity of a material to absorb energy when it is elastically deformed.
Yielding
Edge Dislocation
Resilience
Crystalline Solid
40. A linear defect associated with the lattice distortion created when normally parallel planes are joined together to form a helical ramp.
Bonding Energy
Screw Dislocation
Crystal Structure
Engineering Strain
41. Atomic migration in pure metals.
Hexagonal Close- packed (HCP)
Bonding Energy
Tensile Strength
Self- diffusion
42. A stress used for design purposes; for ductile metals - it is the yield strength divided by a factor of safety.
Elastic Deformation
Safe Stress
Vacancy Diffusion
Ductility
43. Deformation that is permanent or nonrecoverable after release of the applied stress.
Ductility
Plastic Deformation
Engineering Stress
Concentration Gradient