绪论 单元测试

1、 问题: Excess deformation is （ ）
选项：
A:The most common failure mode
B:High energy absorption
C:Little plasticity
D:Stress corrosion cracking
答案: 【
The most common failure mode
】

2、 问题: The correct statement of fatigue includes （ ）
选项：
A:Repeated loading
B:Crack nucleation/growth
C:Constant or variable amplitude
D:Loading, uni/multi-axial loading
答案: 【
Repeated loading
Crack nucleation/growth
Constant or variable amplitude
Loading, uni/multi-axial loading
】

3、 问题: The contribution of August Wöhler is as follows （ ）
选项：
A:S-N Curve
B:Fatigue limit
C:Multiple fatigue
D:Corrosion fatigue
答案: 【
S-N Curve
Fatigue limit
】

4、 问题: Failure due to fatigue, i.e. repeated loading, is the most common cause of mechanical failure. （ ）
选项：
A:对
B:错
答案: 【
对
】

5、 问题: Proper fatigue design includes synthesis, analysis and testing. （ ）
选项：
A:对
B:错
答案: 【
对
】

第一章 单元测试

1、 问题: The characteristics of fail-safe design is （ ）
选项：
A:The oldest criterion
B:Expected maximum load or stress occur occasionally
C:If one part fails, the system does not fail
D:Fracture mechanics analysis and tests
答案: 【
If one part fails, the system does not fail
】

2、 问题: Four kinds of possible design situations are as follows （ ）
选项：
A:Equipment design
B:Model design
C:Product design
D:Design to standard
答案: 【
Equipment design
Model design
Product design
Design to standard
】

3、 问题: The main points of damage tolerance design are as follows （ ）
选项：
A:Slow crack propagation
B:High fracture toughness
C:Minimum detectable crack size
D:Anti-crack measures
答案: 【
Slow crack propagation
High fracture toughness
Minimum detectable crack size
Anti-crack measures
】

4、 问题: Analysis needs to be confirmed by tests. （ ）
选项：
A:对
B:错
答案: 【
对
】

5、 问题: Allowable service life should be less than test or calculated life. （ ）
选项：
A:对
B:错
答案: 【
对
】

第二章 单元测试

1、 问题: Which is not the characteristic of slip （ ）
选项：
A:The relationship between dislocations and plastic deformation
B:A shear deformation of the metal
C:Occurring within individual grains by dislocation movement
D:The same characteristics under monotonic loading and cyclic loading
答案: 【
The same characteristics under monotonic loading and cyclic loading
】

2、 问题: The characteristics of beach mark are as follows （ ）
选项：
A:Wavy bands
B:Pattern of crack growth
C:Crack’s starting, stopping and growing at different rates
D:Two adjacent crack surfaces with open, close, and rub
答案: 【
Wavy bands
Pattern of crack growth
Crack’s starting, stopping and growing at different rates
Two adjacent crack surfaces with open, close, and rub
】

3、 问题: Modes of fatigue crack growth with fracture are as follows （ ）
选项：
A:Trans-crystalline fracture
B:Slip deformation
C:Dislocation movement
D:Inter-crystalline fracture
答案: 【
Trans-crystalline fracture
Inter-crystalline fracture
】

4、 问题: Crack nucleate at surface and grow across several grains (stage I, microcrack), and then to grow in a zigzag manner (stage II, macrocrack). （ ）
选项：
A:对
B:错
答案: 【
对
】

5、 问题: The mechanical property of each grain is the same. （ ）
选项：
A:对
B:错
答案: 【
错
】

第三章 单元测试

1、 问题: Which is not the characteristic of real fatigue Limit （ ）
选项：
A:Group method
B:Fully reversed uniaxial fatigue test
C:Testing frequency is larger than 100 Hz
D:Standard, highly polished, unnotched specimen
答案: 【
Testing frequency is larger than 100 Hz
】

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