【英文标准名称】:Textileglass-Yarns-Determinationofbreakingforceandbreakingelongation
【原文标准名称】:纺织玻璃纤维.纱线.断裂力和断裂伸长的测定
【标准号】:BSISO3341-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-06-15
【实施或试行日期】:2000-06-15
【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】:定义;纱;测定;断裂伸长;断裂荷载;抗断裂强度;试验;试验;扯裂力;抗拉试验;纺织玻璃纤维
【英文主题词】:Breakingload;Breakingstrength;Definition;Definitions;Determination;Elongationatfracture;Tear-outforces;Tensiletesting;Testing;Tests;Textileglass;Yarn
【摘要】:1ThisInternationalStandardspecifiesamethodforthedeterminationofthetensilebreakingforceandelonga-tionatbreakofglassyarnstakenfrompackages.2Themethodisapplicabletovarioustypesofglassyarn(single,folded,cabled,strands,structureswithouttwist,rovings,etc.).Itisbasicallyintendedforsingle,foldedandcabledglassyarnshavingadiameteroflessthan2mm,oralineardensitylowerthan2000tex,takenfrompackages.Heavieryarnsmaybealsotestedprovidingthetestconditionsareacceptabletoallinterestedparties.3Themethodisnotapplicabletoglassyarnswhich,inequilibriumwiththestandardatmosphereandunderapre-tensionof5mN/tex,areelongatedbymorethan0,5%.Suchyarnscanbetestedusingalowerpre-tension(forexample2,5mN/texor1mN/tex),acceptabletoallinterestedparties.Thiswouldoccurmainlywhendealingwithsta-ple-fibreyarns.NOTE1Thoughthedeterminationmayberunonbeamedyarnoronyarnstakenfromfabrics,theresultsmustbeconsideredasindicativeonly.NOTE2Thistestmethodisprimarilyintendedformaterialcharacterizationandqualitycontrol.Fibre-to-fibreabrasionandotherfactorssuchasinsufficientlyuniformtension(catenary)willincreasevariabilityandgeneratelowtestvalues.Thiswillconse-quentlyimpedeaccuratecorrelationbetweenperformanceoftheyarnsandenduseapplications.Extremecareshouldbetakeninconsideringthismethodforspecificationpurposes.NOTE3ThoughthisInternationalStandardprovidesthepossibilityofdeterminingtheelongationatbreak,thispracticeisnotrecommended,however.Indeed,acorrectassessmentoftheelongationwillonlybeobtainedusinganextensometer;itwillnotbeobtainedbymeasuringthedistancetraversedbythemovingclamp.Ontheotherhand,experienceshowsthattheuseofanex-tensometerisquitedelicateandoftencausesdamagetothespecimen.
【中国标准分类号】:W04
【国际标准分类号】:59_100_10
【页数】:14P;A4
【正文语种】:英语