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DIN 45901 T.5-1984 电子元件质量评定协调体系;方法规则5.CECC成员目录(CECC00105)

作者:标准资料网 时间:2024-05-21 01:53:05  浏览:8963   来源:标准资料网
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【英文标准名称】:Harmonizedsystemofqualityassessmentforelectroniccomponents;ruleofprocedure5:CECCmembershipregister
【原文标准名称】:电子元件质量评定协调体系;方法规则5.CECC成员目录(CECC00105)
【标准号】:DIN45901T.5-1984
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:


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【英文标准名称】:Footwearmanufacturingmachines-Lastingmachines-Safetyrequirements;GermanversionEN931:1997+A2:2009
【原文标准名称】:制鞋机械.拉伸机械.安全性要求;德文版本EN931:1997+A2:2009
【标准号】:EN931-2009
【标准状态】:现行
【国别】:
【发布日期】:2010-07
【实施或试行日期】:2010-07-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Definitions;Footwear;Hazards;Lastingmachines;Leather;Leather-workingequipment;Machines;Mechanicalengineering;Occupationalsafety;Operatinginstructions;Protectionofpersons;Safety;Safetyengineering;Safetymeasures;Safetyofmachinery;Safetyrequirements;Shoemachinery;Shoemachines;Shoemanufacture;Specification(approval);Splicingmachines;Terminology;Workplacesafety
【摘要】:
【中国标准分类号】:
【国际标准分类号】:61_060
【页数】:37P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforTearingStrengthofFabricsbyTrapezoidProcedure
【原文标准名称】:用梯形工艺法测定织物撕裂强度的标准试验方法
【标准号】:ASTMD5587-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D13.60
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fabric;tearingstrength;trapezoid;Constantrate-of-extension(CRE)test;Performance--textiles;Teartesting--textilematerials/applications;Trapezoidtearingtest;Woventextilefabrics
【摘要】:Thistestmethodisconsideredsatisfactoryforacceptancetestingofcommercialshipmentsbecausecurrentestimatesofbetween-laboratoryprecisionareacceptable,andthistestmethodisusedextensivelyinthetradeforacceptancetesting.Iftherearedifferencesofpracticalsignificancebetweentestresultsfortwolaboratories(ormore),comparativetestshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,usethesamplesforsuchacomparativetestthatareashomogeneousaspossible,drawnfromthesamelotofmaterialasthesamplesthatresultedindisparateresultsduringinitialtesting.Randomlyassignthesamplesinequalnumberstoeachlaboratory.Thetestresultsfromthelaboratoriesinvolvedshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifbiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Thetrapezoidtearproducestensionalongareasonablydefinedcoursesuchthatthetearpropagatesacrossthewidthofthespecimen.Itisusefulforestimatingtherelativetearresistanceofdifferentfabricsordifferentdirectionsinthesamefabric.Dependingonthenatureofthespecimen,thedatarecordingdeviceswillshowthetearingforceintheformofapeakorpeaks.Thehighestpeaksappeartoreflectthestrengthoftheyarncomponents,individuallyorincombination,neededtostopatearinfabricsofthesameconstruction.Thevalleysrecordedbetweenthepeakshavenospecificsignificance.Theminimumtearingforce,however,isindicatedtobeabovethelowestvalleys.Mosttextilefabricscanbetestedbythistestmethod.Somemodificationofclampingtechniquesmaybenecessaryforagivenfabric,dependinguponitsstructure.Strongfabricsorfabricsmadefromglassfibersrequirespecialadaptationtopreventthemfromslippingintheclampsorbeingdamagedasaresultofbeinggrippedintheclamps.TheCRE-typeisthepreferredtensiletestingmachine.ThistestmethodallowstheuseoftheCRT-typetensilemachinewhenagreeduponbetweenthepurchaserandthesupplier.Theremaybenooverallcorrelation,however,betweentheresultsobtainedwiththeCRT-typemachineandtheCRE-typemachine.Consequently,thesetwotensiletesterscannotbeusedinterchangeablyunlessthedegreeofquantitativecorrelationhasbeenestablishedbetweenthepurchaserandthesupplier.Inanyevent,theCRE-typemachineshallprevail.1.1Thistestmethodcoversthemeasurementofthetearingstrengthoftextilefabricsbythetrapezoidprocedureusingarecordingconstant-rate-of-extension-type(CRE)tensiletestingmachine.1.1.1TheCRE-typetensiletestingmachinehasbecomethepreferredtestapparatusfordeterminingtrapezoidtearingstrength.Itisrecognizedthatsomeconstant-rate-of-traverse-type(CRT)tensiletestingmachinescontinuetobeused.Consequently,thesetestinstrumentsmaybeusedwhenagreeduponbetweenthepurchaserandthesupplier.TheconditionsforuseoftheCRT-typetensiletesterareincludedinAppendixX1.1.2Thistestmethodappliestomostfabricsincludingwovenfabrics,airbagfabrics,blankets,nappedfabrics,knittedfabrics,layeredfabrics,andpilefabrics.Thefabricsmaybeuntreated,heavilysized,coated,resin-treated,orotherwisetreated.Instructionsareprovidedfortestingspecimenswithorwithoutwetting.1.3Tearingstrength,asmeasuredinthistestmethod,requiresthatthetearbeinitiatedbeforetesting.Thereportedvalueobtainedisnotdirectlyrelatedtotheforcerequiredtoinitiateorstartatear.1.4Twocalculationsfortrapezoidtearings......
【中国标准分类号】:W55
【国际标准分类号】:59_080_30
【页数】:6P.;A4
【正文语种】:英语



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