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