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Test your basic knowledge |
Modern Material Science And Engineering 4
Start Test
Study First
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 estimate of the transition between elastic stretching and plastic deformation for a material without a linear region stress - strain curve
offset yield strenght
equivalent property time EPT
pooled variance
creep
2. A property defining a materials resistance to a blow that is measured by an impact test
tertiary creep
poisson's ratio
toughness
offset yield strenght
3. A property determined by measuring the change in the length of a sample to initial length of the sample
engineering strain
cantilever beam test
stress concentration factor
Rockwell Hardness Test
4. Relates the longitudinal deformation and the lateral deformation of material under stress
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5. The first stage of creep - during which dislocations in a material slip and move around obstacles
primary creep
ASTM Standards
flexural strength
equivalent property time EPT
6. A ratio of the force applied to a sample and the instantaneous length of the chain to the initial length of the chain
true stress
Rockwell Hardness Test
yield strength
stress intensity factor
7. 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
plastic deformation
plane strain fracture toughness
ASTM Standards
stress raisers
8. Stress values not involving the presence of stress raisers in the material
error bar
Tensile Test
yield strength
nominal stress
9. The ratio of the maximum stress to the applied stress
stress raisers
equivalent property time EPT
stress concentration factor
hardness test
10. An impact test similar to the charpy test in which the sample is aligned vertically with the notch facing away from the hammer
S- N Curve
izod test
accelerated aging studies
tensile strength
11. The change in the slope of the strain - time plot at any given point during a creep test
plane strain fracture toughness
secondary creep
creep rate
standard deviation
12. The ratio of the elastic energy to the strain at yielding - which determines how much energy will be used for deformation and how much will be translated to motion
modulus of resistance
engineering stress
in - plane shear
variance
13. 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
fatigue
accelerated aging studies
Bend Test
poisson's ratio
14. A period used to force the same aging processes to occur on a sample in a shorter amount of time
stress raisers
plane strain fracture toughness
elastic energy
equivalent property time EPT
15. The final stage of creep - during which the rate of deformations accelerates rapidly and continues until rupture
tertiary creep
izod test
endurance limit
breaking strength
16. The number of cycles at a given stress level that a material can experience before failing
ASTM Standards
fracture mechanics
true stress
fatigue life
17. The slope of the stress - strain curve in the elastic region. aka Young's Modulus and Tensile Modulus
cantilever beam test
in - plane shear
elastic modulus
endurance limit
18. Term that accounts for the increased stress applied to an elliptical crack whose length is much greater than its width
stress intensity factor
Moh Hardness
necking
fatigue
19. The amount of energy lost as the test sample is destroyed during an impact test
Brinell Hardness HB
fracture toughness
hardness test
impact energy
20. A nonlinear - qualitative scaled used to evaluate the resistance of a materials surface to penetration by a hard object
stress raisers
Moh Hardness
fatigue
breaking strength
21. The study of crack growth leading to material failure
ductile
tensile strength
fracture mechanics
hardness test
22. The square root of the variance. this value provides more knowledge about the distance from the mean a random sample is likely to be
t- table
larson - miller parameter LM
standard deviation
Bend Test
23. The stress at which the material breaks completely during tensile testing
creep
flexural strength
breaking strength
necking
24. The stress at the point of transition between elastic stretching and plastic deformation
tensile strength
Charpy Impact Test
yield strength
ductile
25. Materials that can plastically deform without breaking
ASTM Standards
Moh Hardness
ductile
hardness test
26. Plastic deformation of a material under stress at elevated temperatures; occurs due to dislocations in the material
Tensile Test
creep
flexural strength
larson - miller parameter LM
27. The stress level below which there is a 50% probability that failure will never occur
endurance limit
cantilever beam test
poisson's ratio
impact energy
28. Method used to determine fatigue by alternating compressive and tensile forces on the sample
cantilever beam test
stress intensity factor
Moh Hardness
breaking strength
29. The resistance of the surface of a material to penetration by a hard object under static force
variance
plastic deformation
hardness
elastic energy
30. The transition of some metals in which a change in temperature causes them to transform between ductile and brittle behavior
Bend Test
ductile to brittle transition
modulus of resistance
plane strain fracture toughness
31. A single blow test names after Charpy in which a notched test sample is broken by a swinging pendulum
Bend Test
Charpy Impact Test
flexural strength
larson - miller parameter LM
32. The amount of flexural stress a material can withstand before breaking. measured through the bend test
flexural strength
S- N Curve
hardness
yield strength
33. A statistical table based on the degrees of freedom and the level of uncertainty in a set of reported sample values
t- table
endurance limit
ductility
opening stresses
34. The region on the stress - strain curve in which the material has experienced a change from which it will not completely recover
Rockwell Hardness Test
variance
plastic deformation
brittle
35. The stress at the highest applied force on a stress - strain curve
ductile
larson - miller parameter LM
tensile strength
fracture toughness
36. 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
stress intensity factor
impact energy
fracture toughness
secondary creep
37. A value used to characterized creep based on time - temperature - and material- specific constants
necking
larson - miller parameter LM
Charpy Impact Test
S- N Curve
38. The area contained under the elastic portion of a stress - strain curve - which represent how much energy the material can absorb before permanently beforming
plane strain fracture toughness
hardness test
elastic energy
stress intensity factor
39. 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
poisson's ratio
Rockwell Hardness Test
brittle
error bar
40. Failure because of repeated stresses bellow the yield strength
larson - miller parameter LM
fatigue
ductile to brittle transition
fracture mechanics
41. A method used to measure the resistance of the surface of a material to penetration by a hard object under a static force
stress intensity factor
offset yield strenght
hardness test
true stress
42. The application of stresses parallel to a crack causing the top portion to be pushed forward and the bottom portion to be pulled in the opposite direction
in - plane shear
necking
true stress
equivalent property time EPT
43. The region on a stress - strain curve in which no permanent changes to the material occur
stress intensity factor
ductile to brittle transition
flexural strength
elastic stretching
44. A statistical quantity that takes into account the random error from a variety of sources and provides infromation about the spread of the data
variance
impact energy
fracture mechanics
izod test
45. A specific method of measuring the resistance of a materials surface to penetration by a hard object under a static force
true stress
modulus of resistance
larson - miller parameter LM
Rockwell Hardness Test
46. The ratio of applied load to cross - sectional area
out- of- plane shear
pooled variance
engineering stress
stress concentration factor
47. Stresses that act perpendicularly to the direction of the crack - causing the crack ends to pull apart and opening the crack further
plane strain fracture toughness
accelerated aging studies
ASTM Standards
opening stresses
48. A method used to measure the flexural strength of a sample
Bend Test
fracture toughness
engineering strain
plastic deformation
49. A method used to determine the tensile strength - breaking strength - and the yield strength of a sample
flexural strength
endurance limit
Tensile Test
creep rate
50. One of the many scales used to evaluate the resistance of a materials surface to penetration by a hard object under static force
Brinell Hardness HB
error bar
engineering strain
hardness