ANSI/ASTM D5804-1997 零档制动强度试验方法("干零档张力")
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【英文标准名称】:TestMethodsforZero-SpanBreakingStrength("DryZero-SpanTensile")
【原文标准名称】:零档制动强度试验方法("干零档张力")
【标准号】:ANSI/ASTMD5804-1997
【标准状态】:作废
【国别】:美国
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:扁平轧材;抗拉强度;材料试验;试验
【英文主题词】:Breakingstrength;Flatrolledproducts;Materialstesting;Paper;Paperproducts;Tensilestrength;Testing;Tests
【摘要】:Thistestmethodprovidesaquickreliablemeanstomeasurethezero-spantensilestrengthofarandomlyorientedspecimenoffiberswhendry.Similarproceduresfordeterminingthezero-spantensilestrengthofarandomlyorientedspecimenoffiberswhenwetarefoundinTestMethodD5803.Inthistestmethod,thefibersaretestedasahandsheetproducedusingastandardizedproceduresuchasTAPPIT205.Whiletestingispossibleonfinishedpapermaterials,informationonfiberqualityfromintermediatestepsinthepulpingorpapermakingprocess,orboth,isfrequentlymoreusefulforimprovingfinishedpaperqualityorimprovingfiberutilizationof,forexample,recycledfibers,orfiberssubjectedtonewpulping,bleaching,orfinishingprocesses.Themodificationsoftheproceduredescribedinthistestmethodrequiredfortestingfinishedpaperisstraightforward;however,testingmustbedoneinthetwoprincipledirectionsofthesheet,asrequiredinTestMethodD828,sincethefinishedpaperorpaperboardwillgenerallyhavenon-randomfiberorientation,resultingindifferentstrengthpropertiesinthetwoprincipledirectionsofthefinishedsheet.Testingofsheetshavingagrammagegreaterthan100g/m,whichincludessomepapermaterialsdescribedaspaperandmanypaperboards,isdifficultbecauseofproblemsassociatedwithclampingofindividualfibersasthenumberoffibersperunitareaincreases.Suchmodificationsarenotdescribedinthistestmethod,andiftheyaremade,theyshallbeacknowledgedandclearlydescribedinthereportasdeviationsfromthestandardprocedure.Inadditiontoameasureofthedryzero-spantensilestrengthofthespecimenoffibers,anindexofthecohesivenessoffibersinthesheetisalsoprovidedbytheratioofthetensilestrengthdeterminedusingTestMethodD828andthetensilestrengthdeterminedusingthistestmethodwhenalltestingisdoneonhandsheetshavingrandomfiberorientation(1).Twoinstrumentalapproachesforaccomplishingthemeasurementofdrytensilestrengthatzero-spanaredescribed.Oneapproachistheuseofspeciallyconstructedpairof"zero-span"jawswhichareusedinconjunctionwithaconventionaltensiletestingmachine.Onesuchdesignfor"zero-span"jawswasproposedbyClark(1).AseconddesignwasproposedbyWinkandVanEperen(2).Asecondapproachistheuseofaspecialinstrumentincorporatingboth"zero-span"jawsandmeasurementandreadoutdevicesinasingleinstrument.Whenproperlyadjustedandcalibrated,eitheroftheinstrumentalapproachesmaybeusedtoperformthistestmethod.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Y30
【国际标准分类号】:19_060
【页数】:
【正文语种】:英语
【原文标准名称】:零档制动强度试验方法("干零档张力")
【标准号】:ANSI/ASTMD5804-1997
【标准状态】:作废
【国别】:美国
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:扁平轧材;抗拉强度;材料试验;试验
【英文主题词】:Breakingstrength;Flatrolledproducts;Materialstesting;Paper;Paperproducts;Tensilestrength;Testing;Tests
【摘要】:Thistestmethodprovidesaquickreliablemeanstomeasurethezero-spantensilestrengthofarandomlyorientedspecimenoffiberswhendry.Similarproceduresfordeterminingthezero-spantensilestrengthofarandomlyorientedspecimenoffiberswhenwetarefoundinTestMethodD5803.Inthistestmethod,thefibersaretestedasahandsheetproducedusingastandardizedproceduresuchasTAPPIT205.Whiletestingispossibleonfinishedpapermaterials,informationonfiberqualityfromintermediatestepsinthepulpingorpapermakingprocess,orboth,isfrequentlymoreusefulforimprovingfinishedpaperqualityorimprovingfiberutilizationof,forexample,recycledfibers,orfiberssubjectedtonewpulping,bleaching,orfinishingprocesses.Themodificationsoftheproceduredescribedinthistestmethodrequiredfortestingfinishedpaperisstraightforward;however,testingmustbedoneinthetwoprincipledirectionsofthesheet,asrequiredinTestMethodD828,sincethefinishedpaperorpaperboardwillgenerallyhavenon-randomfiberorientation,resultingindifferentstrengthpropertiesinthetwoprincipledirectionsofthefinishedsheet.Testingofsheetshavingagrammagegreaterthan100g/m,whichincludessomepapermaterialsdescribedaspaperandmanypaperboards,isdifficultbecauseofproblemsassociatedwithclampingofindividualfibersasthenumberoffibersperunitareaincreases.Suchmodificationsarenotdescribedinthistestmethod,andiftheyaremade,theyshallbeacknowledgedandclearlydescribedinthereportasdeviationsfromthestandardprocedure.Inadditiontoameasureofthedryzero-spantensilestrengthofthespecimenoffibers,anindexofthecohesivenessoffibersinthesheetisalsoprovidedbytheratioofthetensilestrengthdeterminedusingTestMethodD828andthetensilestrengthdeterminedusingthistestmethodwhenalltestingisdoneonhandsheetshavingrandomfiberorientation(1).Twoinstrumentalapproachesforaccomplishingthemeasurementofdrytensilestrengthatzero-spanaredescribed.Oneapproachistheuseofspeciallyconstructedpairof"zero-span"jawswhichareusedinconjunctionwithaconventionaltensiletestingmachine.Onesuchdesignfor"zero-span"jawswasproposedbyClark(1).AseconddesignwasproposedbyWinkandVanEperen(2).Asecondapproachistheuseofaspecialinstrumentincorporatingboth"zero-span"jawsandmeasurementandreadoutdevicesinasingleinstrument.Whenproperlyadjustedandcalibrated,eitheroftheinstrumentalapproachesmaybeusedtoperformthistestmethod.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Y30
【国际标准分类号】:19_060
【页数】:
【正文语种】:英语
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