Fatigue Life Design of Mechanical Structure答案2023

第一章测试

1. The characteristics of fail-safe design is （ ）
A:If one part fails, the system does not fail B:Fracture mechanics analysis and tests C:The oldest criterion D:Expected maximum load or stress occur occasionally
答案:A
2. Four kinds of possible design situations are as follows （ ）
A:Equipment design B:Product design C:Design to standard D:Model design
答案:ABCD
3. The main points of damage tolerance design are as follows （ ）
A:High fracture toughness B:Slow crack propagation C:Anti-crack measures D:Minimum detectable crack size
答案:ABCD
4. Analysis needs to be confirmed by tests. （ ）
A:错 B:对
答案:B
5. Allowable service life should be less than test or calculated life. （ ）
A:对 B:错
答案:A