简介：Corrosionisoneoftheimportantstructuralintegrityconcernsofagingaircraft,anditisestimatedthatasignificantportionofairframemaintenancebudgetsisdirectedtowardscorrosion-relatedproblemsforbothmilitaryandcommercialaircraft.Inordertobetterunderstandhowenvironmentalfactorsinfluencethecorrosiondamageinitiationandpropagationonaircraftstructureandtopredictpre-corrosiontestpiecesoffatiguelifeandstructuralintegrityofaneffectiveapproach,thispaperuses...

简介：Theequationofstressintensityfactors(SIF)ofinternallypressurizedthick-walledcylinderwasusedasthereferencecase.SIFequationofrotatingthick-walledcylindercontainingaradialcrackalongtheinternalborewaspresentedinweightfunctionmethod.Theweightfumctionformulaswereworkedoutandcanbeusedforallkindsofdepthofcracks,rotatingspeed,material,sizeofthick-walledcylindertocalculatethestressintensityfactors.Theresultsindicatedthevalidityandeffectivenessoftheseformulas.Meanwhile,therulesofthestressintensityfactorsinrotatingthick-walledcylinderwiththechangeofcrackdepthsandtheratioofouterradiustoinnerradiuswerestudied.Thestudiesarevaluabletoengineeringapplication.

简介：因素影响对流球的硝酸盐喷雾器形成用热力学的平衡模型ISORROPIA和压缩煤气阶段的化学模型通过很多敏感研究被调查。结果显示硝酸盐喷雾器的平衡集中与太阳的天顶角度，空气温度，相对湿度，起始的SO2集中，起始的NO2集中和起始的NH3集中变化。NH3集中和太阳的天顶角度起最重要的作用，由相对湿度和NO2集中列在后面。看起来在硝酸盐喷雾器和这四个因素之间的关系，以及空气温度，由于联合效果强壮、高度非线性。硝酸盐喷雾器上的SO2集中的影响在线性附近、弱。

简介：Thegasdynamicandelectromagneticfactorsaffectingthepositionofarcrootsinatubulararcheaterareanalyzed.Magnitudesofthevariousfactorsareestimatedthroughnumericalmodelling,andtheoverallactiononthearcassessed.Itisfoundthattheactionsonthearcintherearelectrodecanbebalancedinastablemannerandthearcrootcanbestabilizedatacertainaxialposition.Inthefrontelectrode,thevariousfactorscannotbebalanced,andthearerootcanonlystaywithintheelectrodethroughthemechanismofrecurrentshunting.Theseconclusionsagreewithexperimentalobservations.