ASTM D 885-1985 人造有机纤维轮胎帘子线,轮胎帘布和工业长纱线的试验方法
作者:标准资料网 时间:2024-04-29 04:26:35 浏览:9900
来源:标准资料网
【英文标准名称】:TestingTireCords,TireCordFabricsandIndustrialFilamentYarnsMadefromMan-MadeOrganic-BaseFibers
【原文标准名称】:人造有机纤维轮胎帘子线,轮胎帘布和工业长纱线的试验方法
【标准号】:ASTMD885-1985
【标准状态】:作废
【国别】:美国
【发布日期】:1985
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:纺织材料;试验;布;纺织试验;化学纤维;纱;长丝纱;纤维;机织物
【英文主题词】:fibres;yarn;tirefabrics;filamentyarns;man-madefibres;cloth;textiles;wovenfabrics;textiletesting;testing
【摘要】:
【中国标准分类号】:G41;W58
【国际标准分类号】:59_080_10
【页数】:26P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforCreep-FatigueCrackGrowthTesting
【原文标准名称】:蠕变—疲劳龟裂增大试验的标准试验方法
【标准号】:ASTME2760-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E08.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compactspecimens;cracks;crackgrowth;creep;fatigue;metals
【摘要】:Creep-fatiguecrackgrowthtestingistypicallyperformedatelevatedtemperaturesoverarangeoffrequenciesandhold-timesandinvolvesthesequentialorsimultaneousapplicationoftheloadingconditionsnecessarytogeneratecracktipcyclicdeformation/damageenhancedbycreepdeformation/damageorviceversa.Unlesssuchtestsareperformedinvacuumoraninertenvironment,oxidationcanalsoberesponsibleforimportantinteractioneffectsrelatingtodamageaccumulation.Thepurposeofcreep-fatiguecrackgrowthtestscanbetodeterminematerialpropertydatafor(a)assessmentinputdataforthedamageconditionanalysisofengineeringstructuresoperatingatelevatedtemperatures,(b)materialcharacterization,or(c)developmentandverificationofrulesfordesignandlifeassessmentofhigh-temperaturecomponentssubjecttocyclicservicewithlowfrequenciesorwithperiodsofsteadyoperation,oracombinationthereof.Ineverycase,itisadvisabletohavecomplementarycontinuouscyclingfatiguedata(gatheredatthesameloading/unloadingrate),creepcrackgrowthdataforthesamematerialandtesttemperature(s)asperTestMethodE1457,andcreep-fatiguecrackformationdataasperTestMethodE2714.Aggressiveenvironmentsathightemperaturescansignificantlyaffectthecreep-fatiguecrackgrowthbehavior.Attentionmustbegiventotheproperselectionandcontroloftemperatureandenvironmentinresearchstudiesandingenerationofdesigndata.Resultsfromthistestmethodcanbeusedasfollows:Establishmaterialselectioncriteriaandinspectionrequirementsfordamagetolerantapplicationswherecyclicloadingatelevatedtemperatureispresent.Establish,inquantitativeterms,theindividualandcombinedeffectsofmetallurgical,fabrication,operatingtemperature,andloadingvariablesoncreep-fatiguecrackgrowthlife.Theresultsobtainedfromthistestmethodaredesignedforcrackdominantregimesofcreep-fatiguefailureandshouldnotbeappliedtocracksinstructureswithwide-spreadcreepdamage.Localizeddamageinasmallzonearoundthecracktipispermissible,butnotinazonethatiscomparableinsizetothecracksizeortheremainingligamentsize.1.1Thistestmethodcoversthedeterminationofcreep-fatiguecrackgrowthpropertiesofnominallyhomogeneousmaterialsbyuseofpre-crackedcompacttype,C(T),testspecimenssubjectedtouniaxialcyclicforces.Itconcernsfatiguecyclingwithsufficientlylongloading/unloadingratesorhold-times,orboth,tocausecreepdeformationatthecracktipandthecreepdeformationberesponsibleforenhancedcrackgrowthperloadingcycle.Itisintendedasaguideforcreep-fatiguetestingperformedinsupportofsuchactivitiesasmaterialsresearchanddevelopment,mechanicaldesign,processandqualitycontrol,productperformance,andfailureanalysis.Therefore,thismethodrequirestestingofatleasttwospecimensthatyieldoverlappingcrackgrowthratedata.Thecyclicconditionsresponsibleforcreep-fatiguedeformationandenhancedcrackgrowthvarywithmaterialandwithtemperatureforagivenmaterial.Theeffectsofenvironmentsuchastime-dependentoxidationinenhancingthecrackgrowthratesareassumedtobeincludedinthetestresults;itisthusessentialtoconducttestinginanenvironmentthatisrepresentativeoftheintendedapplication.1.2Twotypesofcrackgrowthmechanismsareobservedduringcreep/fatiguetests:(1)time-dependentintergranularcreepand(2)cycledependenttransgranularfatigu......
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:19P.;A4
【正文语种】:英语
【英文标准名称】:Vibrationandshock;Mechanicaldrivingpointimpedanceofthehumanbody
【原文标准名称】:振动和冲击.人体机械驱动点的阻抗
【标准号】:ISO5982-1981
【标准状态】:作废
【国别】:国际
【发布日期】:1981-08
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC108
【标准类型】:()
【标准水平】:()
【中文主题词】:振动;效应;人类工效学;机械环境影响(对人体);生理效应(对人体);机械冲击;振动影响(对人体);输入阻抗;人体;人
【英文主题词】:physiologicaleffects(humanbody);mechanicalshock;vibrationeffects(humanbody);ergonomics;mechanicaleffects(humanbody);inputimpedance;humanbody;vibration;effects;people;humans
【摘要】:
【中国标准分类号】:C71;C52
【国际标准分类号】:0270
【页数】:9P;A4
【正文语种】:英语
