SAE AMS3778/3 Webbing, Woven, Nylon 400 Pounds Force (1779 N)
时间:2024-05-12 18:45:58 来源: 标准资料网 作者：标准资料网 阅读：9056
Product Code:SAE AMS3778/3
Title:Webbing, Woven, Nylon 400 Pounds Force (1779 N)
Issuing Committee:Ams P Polymeric Materials Committee
Scope:This specification covers one type of nylon webbing.
【英文标准名称】:StandardTestMethodforResidualEmbrittlementinMetallicCoated,ExternallyThreadedArticles,Fasteners,andRod8212;InclinedWedgeMethod
【原文标准名称】:金属镀覆的外螺纹制品,紧固件和棒的残留脆变的标准试验方法.倾斜楔入法
【标准号】:ASTMB839-2004(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:B08.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:hydrogenembrittlementtest;metalliccoated;residualembrittlementtest;testingthreadedarticles;threadedfasteners;threadedrod;Embrittlement;Externallythreadedarticles/fasteners/rods;Fasteners;Hydrogenembrittlement(HE);Metalliccoati
【摘要】:Theuseofthistestmethodcansignificantlyreducetheriskofsuddencatastrophicfailureofthreadedarticlesandfasteners,belowtheirdesignstrength,duetohydrogenembrittlement.1.1Thistestmethodcoversthedeterminationof,onastatisticalbasis,theprobabilityoftheexistenceofhydrogenembrittlementordegradationin:1.1.1Abatchofbarrelelectroplated,autocatalyticplated,phosphated,orchemicallyprocessedthreadedarticlesorfastenersand1.1.2Abatchofrackplatedthreadedarticles,fasteners,orrod.1.2Industrialpracticeforthreadedarticles,fasteners,androdhasevolvedthreegraduatedlevelsoftestexposuretoensurereducedriskofhydrogenembrittlement(seeSection3).Theselevelshaveevolvedfromcommercialapplicationshavingvaryinglevelsofcriticality.Inessence,theyrepresenttheconfidencelevelthatisrequired.Theyalsorepresentthetimethatfinishedgoodsareheldbeforetheycanbeshippedandused.Thistimeequatestoadditionalcosttothemanufacturerthatmayofnecessitybeaddedtothecostofthefinishedgoods.1.3Thistestmethodisapplicabletothreadedarticles,fasteners,androdmadefromsteelwithx2265;1000MPa(withcorrespondinghardnessvaluesof300HV10kgf,303HB,or31HRc)orsurfacehardenedthreadedarticles,fasteners,orrod.1.4ThistestmethodshallbecarriedoutafterhydrogenembrittlementreliefheattreatmentinaccordancewiththerequirementsofGuideB850.Itmayalsobeusedforassessingdifferencesinprocessingsolutions,conditions,andtechniques.Thistestmethodhastwomainfunctions:first,whenusedwithastatisticalsamplingplanitcanbeusedforlotacceptanceorrejection,andsecond,itcanbeusedasacontroltesttodeterminetheeffectivenessofthevariousprocessingstepsincludingpre-andpost-bakingtreatmentstoreducethemobilehydrogeninthearticles,fasteners,orrod.WhilethistestmethodiscapableofindicatingthoseitemsthatareembrittledtotheextentdefinedinSection3,itdoesnotguaranteecompletefreedomfromembrittlement.1.5Thistestmethoddoesnotrelievetheprocessorfromimposingandmonitoringsuitableprocesscontrol.1.6ThistestmethodhasbeencoordinatedwithISO/DIS10587andistechnicallyequivalent.(Warning8212;Greatcareshouldbetakenwhenapplyingthistestmethod.Theheadsofembrittledarticles,fasteners,orrodmaysuddenlybreakoffandbecomeflyingprojectilescapableofcausingblindnessorotherseriousinjury.Thishazardcanoccuraslongas200hafterthetesthasstarted.Hence,shieldsorotherapparatusshouldbeprovidedtoavoidsuchinjury.)Note18212;TestMethodF1940canbeusedasaprocesscontrolandverificationtopreventhydrogenembrittlementinfastenerscoveredbythistestmethod.Note28212;Theuseofinhibitorsinacidpicklingbathsdoesnotnecessarilyguaranteeavoidanceofhydrogenembrittlement.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J13
【国际标准分类号】:21_060_01
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:Connectorsforelectronicequipment-Testsandmeasurements-Climatictests-Test11d-Rapidchangeoftemperature
【原文标准名称】:电子设备连接器.试验和测量.气候试验.试验11d.温度的快速变化
【标准号】:BSEN60512-11-4-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-05-29
【实施或试行日期】:2002-05-29
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电子设备及元件;测量;元部件;测量方法;双室试验;电子设备;耐候性试验;详细规范;气候荷载;机电的;电气工程;应力;试验;测量技术;温度试验;插头和插座连接;机电装置;潮气;温度变化;气候试验;电子仪器;电子工程;机电学;连接器
【英文主题词】:Changesoftemperature;Climaticloading;Climatictests;Components;Connectors;Detailspecification;Doublechambermethod;Electricalengineering;Electromechanical;Electromechanicaldevices;Electromechanics;Electronicengineering;Electronicequipment;Electronicequipmentandcomponents;Electronicinstruments;Measurement;Measuringtechniques;Methodsformeasuring;Moisture;Plug-and-socketconnection;Stress;Temperaturetest;Testing;Weatheringtests
【摘要】:ThispartofIEC60512,whenrequiredbythedetailspecification,isusedfortestingelectromechanicalcomponentswithinthescopeofIECtechnicalcommittee48.Thistestmayalsobeusedforsimilardeviceswhenspecifiedinadetailspecification.Theobjectofthistestistodefineastandardtestmethodtoassesstheabilityofcomponentstowithstandrapidchangeoftemperatureinairsuchasmightoccurduringstorage,transportationanduse.
【中国标准分类号】:L23
【国际标准分类号】:31_220_10
【页数】:8P.;A4
【正文语种】:英语