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