知到Fatigue Life Design of Mechanical Structure章节答案(知到期末答案)
知到Fatigue Life Design of Mechanical Structure章节答案(知到期末答案)
1、知到章节知单选题:
Excessdeformationis()
选项:
A:Stresscorrosioncracking
B:Highenergyabsorption
C:Littleplasticity
D:The答案答案mostcommonfailuremode
答案:【Themostcommonfailuremode】
2、多选题:
The期末correctstatementoffatigueincludes()
选项:
A:Loading,uni/multi-axialloading
B:Repeatedloading
C:Cracknucleation/growth
D:Constantorvariableamplitude
答案:【Loading,uni/multi-axialloading;
Repeatedloading;
Cracknucleation/growth;
Constantorvariableamplitude】
3、多选题:
The知到章节知contributionofAugustW?hlerisasfollows()
选项:
A:Fatiguelimit
B:Corrosionfatigue
C:Multiplefatigue
D:S-NCurve
答案:【Fatiguelimit;
S-NCurve】
4、判断题:
Failureduetofatigue,答案答案i.e.repeatedloading,isthemostcommoncauseofmechanicalfailure.()
选项:
A:对
B:错
答案:【对】
5、判断题:
Properfatiguedesignincludessynthesis,期末analysisandtesting.()
选项:
A:对
B:错
答案:【对】
1、单选题:
The知到章节知characteristicsoffail-safedesignis()
选项:
A:Expectedmaximumloadorstressoccuroccasionally
B:Ifonepartfails,thesystemdoesnotfail
C:Theoldestcriterion
D:Fracturemechanicsanalysisandtests
答案:【Ifonepartfails,thesystemdoesnotfail】
2、多选题:
Fourkindsofpossibledesignsituationsareasfollows()
选项:
A:Modeldesign
B:Productdesign
C:Designtostandard
D:Equipmentdesign
答案:【Modeldesign;
Productdesign;
Designtostandard;
Equipmentdesign】
3、答案答案多选题:
The期末mainpointsofdamagetolerancedesignareasfollows()
选项:
A:Minimumdetectablecracksize
B:Slowcrackpropagation
C:Highfracturetoughness
D:Anti-crackmeasures
答案:【Minimumdetectablecracksize;
Slowcrackpropagation;
Highfracturetoughness;
Anti-crackmeasures】
4、判断题:
Analysisneedstobeconfirmedbytests.()
选项:
A:错
B:对
答案:【对】
5、知到章节知判断题:
Allowableservicelifeshouldbelessthantestorcalculatedlife.()
选项:
A:对
B:错
答案:【对】
1、答案答案单选题:
Whichisnotthecharacteristicofslip()
选项:
A:The期末samecharacteristicsundermonotonicloadingandcyclicloading
B:Therelationshipbetweendislocationsandplasticdeformation
C:Asheardeformationofthemetal
D:Occurringwithinindividualgrainsbydislocationmovement
答案:【Thesamecharacteristicsundermonotonicloadingandcyclicloading】
2、多选题:
The知到章节知characteristicsofbeachmarkareasfollows()
选项:
A:Wavybands
B:Patternofcrackgrowth
C:Crack’sstarting,stoppingandgrowingatdifferentrates
D:Twoadjacentcracksurfaceswithopen,close,andrub
答案:【Wavybands;
Patternofcrackgrowth;
Crack’sstarting,stoppingandgrowingatdifferentrates;
Twoadjacentcracksurfaceswithopen,close,andrub】
3、多选题:
Modesoffatiguecrackgrowthwithfractureareasfollows()
选项:
A:Trans-crystallinefracture
B:Slipdeformation
C:Inter-crystallinefracture
D:Dislocationmovement
答案:【Trans-crystallinefracture;
Inter-crystallinefracture】
4、答案答案判断题:
Cracknucleateatsurfaceandgrowacrossseveralgrains(stageI,期末microcrack),andthentogrowinazigzagmanner(stageII,macrocrack).()
选项:
A:对
B:错
答案:【对】
5、判断题:
Themechanicalpropertyofeachgrainisthesame.()
选项:
A:错
B:对
答案:【错】
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