BS 876-1949 手锤规范
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【英文标准名称】:Specificationforhandhammers
【原文标准名称】:手锤规范
【标准号】:BS876-1949
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:英国标准学会(GB-BSI)
【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】:J47
【国际标准分类号】:
【页数】:
【正文语种】:
【原文标准名称】:手锤规范
【标准号】:BS876-1949
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:英国标准学会(GB-BSI)
【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】:J47
【国际标准分类号】:
【页数】:
【正文语种】:
下载地址: 点击此处下载
【英文标准名称】:AlternativeRulesforOutsideDiameterToleranceforPipeSectionIANNULLED;SUPP8&9ANNULLED
【原文标准名称】:管道外部直径容差的替代规则.第I节已作废;补充件8&9已作废
【标准号】:ASME2237-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:AlternativeRulesforOutsideDiameterToleranceforPipeSectionIANNULLED;SUPP8&9ANNULLED
【中国标准分类号】:P94
【国际标准分类号】:
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforAssessingCleanFlaxFiberFineness
【原文标准名称】:评估清洁亚麻纤维细度的标准试验方法
【标准号】:ASTMD7025-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D13.17
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fineness;flaxfiber;lineardensity;micronairereading;Flaxfiberandproducts
【摘要】:Thistestmethodfordeterminingfinenessofcleanedflaxfibersisconsideredsatisfactoryforacceptancetestingofcommercialshipmentswhenthelevelsarecontrolledbyuseofarangeofcalibrationstandards.Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwoormorelaboratories,comparativetestsshouldbeperformedbythoselaboratoriestodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,usetestsamplesthatareashomogenousaspossible,aredrawnfromthematerialfromwhichthedisparatetestresultswereobtained,andarerandomlyassignedinequalnumberstoeachlaboratoryfortesting.Thesetestresultsfromthetwolaboratoriesshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Theresistancethataplugofflaxfibersofferstotheflowofairismeasuredasanapproximateindicationoftheaveragerelativefinenessofthefibers.Thetotalsurfaceareaoffinerfibershasalargerperunitmassandincreasedresistancetoairflowthandocoarserfibers.Instrumentsareavailabletoindicatetheresistancetoairflowusingeithercompressedairoravacuum;andareconstructed(1)tomeasureairflowunderconstantpressuredropacrosstheplug,(2)tomeasurepressuredropwhenaconstantflowofairismaintained,or(3)toindicateresistancetoairflowfrombothabalancedandunbalancedWheatstonebridge.Thereliabilityoftheresultsofanytestmethoddependsprimarilyuponhowwellthespecimenstestedrepresenttheoriginalsourcematerial.Flaxfibersaredifferentfrommanytextilefibers,suchascottonorsyntheticones,inthattheyarenotindividualfilamentsbutbundlesoffibrousmaterialthatmayormaynotbecompletelyseparatedintoindividualfilamentsandthereforehaveahighdegreeofvariability.Whilecleaningandprocessingcanproduceseparationandchangesinlength,thereisnocertaintyoffibrillationofthefibrousmaterial.Note38212;Amodificationofthistestmethodcanbeusedincommercialtradingtoselectbalesthatwillconformtocontractguaranteesforspecifiedspecificsurfaceindex.Forthispurpose,theusualpracticetotestonlyonespecimenpersample.Thisspecificsurfaceindexreadingisrelatedtotheaveragelineardensityofsinglefibersinabundlecalculatedfrommassandlengthmeasurementsonthebundleandthenumberofsinglefibersinthebundle.Thespecificsurfaceindexofflaxfibersmaybeafunctionoffineness,degreeofretting,cleanliness,variety,bundleseparation,andplantmaturityharvestdate.Thisfinenessofflaxfibersaffectstheirmillprocessingandspinningperformanceaswellascontributessignificantlytotheappearanceandstrengthoftheyarnsproduced.Theaccuracyofweighingcanbecontrolledbythenumberoffiberscomposingthebundle.However,withshortfiberoflowlineardensitythenumberoffiberstobecountedbecomesprohibitiveunlessthebundlemassiskeptlow.1.1Thistestmethodprovidestwooptionsthatcoverthedeterminationofthefinenessofcleanlooseflaxfibersby:Option1,measuringthespecificsurfaceareabytheresistanceofaplugofflaxfiberstoairflowunderprescribedconditions,orOption2,estimatingthemassperunitlength.Note18212;ForothermethodsfordeterminingthefinenessoffibersrefertoAppendixX1.1.2Thevaluesstated......
【中国标准分类号】:W30
【国际标准分类号】:59_080_20
【页数】:5P.;A4
【正文语种】:英语
【原文标准名称】:管道外部直径容差的替代规则.第I节已作废;补充件8&9已作废
【标准号】:ASME2237-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:AlternativeRulesforOutsideDiameterToleranceforPipeSectionIANNULLED;SUPP8&9ANNULLED
【中国标准分类号】:P94
【国际标准分类号】:
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforAssessingCleanFlaxFiberFineness
【原文标准名称】:评估清洁亚麻纤维细度的标准试验方法
【标准号】:ASTMD7025-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D13.17
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fineness;flaxfiber;lineardensity;micronairereading;Flaxfiberandproducts
【摘要】:Thistestmethodfordeterminingfinenessofcleanedflaxfibersisconsideredsatisfactoryforacceptancetestingofcommercialshipmentswhenthelevelsarecontrolledbyuseofarangeofcalibrationstandards.Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwoormorelaboratories,comparativetestsshouldbeperformedbythoselaboratoriestodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,usetestsamplesthatareashomogenousaspossible,aredrawnfromthematerialfromwhichthedisparatetestresultswereobtained,andarerandomlyassignedinequalnumberstoeachlaboratoryfortesting.Thesetestresultsfromthetwolaboratoriesshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Theresistancethataplugofflaxfibersofferstotheflowofairismeasuredasanapproximateindicationoftheaveragerelativefinenessofthefibers.Thetotalsurfaceareaoffinerfibershasalargerperunitmassandincreasedresistancetoairflowthandocoarserfibers.Instrumentsareavailabletoindicatetheresistancetoairflowusingeithercompressedairoravacuum;andareconstructed(1)tomeasureairflowunderconstantpressuredropacrosstheplug,(2)tomeasurepressuredropwhenaconstantflowofairismaintained,or(3)toindicateresistancetoairflowfrombothabalancedandunbalancedWheatstonebridge.Thereliabilityoftheresultsofanytestmethoddependsprimarilyuponhowwellthespecimenstestedrepresenttheoriginalsourcematerial.Flaxfibersaredifferentfrommanytextilefibers,suchascottonorsyntheticones,inthattheyarenotindividualfilamentsbutbundlesoffibrousmaterialthatmayormaynotbecompletelyseparatedintoindividualfilamentsandthereforehaveahighdegreeofvariability.Whilecleaningandprocessingcanproduceseparationandchangesinlength,thereisnocertaintyoffibrillationofthefibrousmaterial.Note38212;Amodificationofthistestmethodcanbeusedincommercialtradingtoselectbalesthatwillconformtocontractguaranteesforspecifiedspecificsurfaceindex.Forthispurpose,theusualpracticetotestonlyonespecimenpersample.Thisspecificsurfaceindexreadingisrelatedtotheaveragelineardensityofsinglefibersinabundlecalculatedfrommassandlengthmeasurementsonthebundleandthenumberofsinglefibersinthebundle.Thespecificsurfaceindexofflaxfibersmaybeafunctionoffineness,degreeofretting,cleanliness,variety,bundleseparation,andplantmaturityharvestdate.Thisfinenessofflaxfibersaffectstheirmillprocessingandspinningperformanceaswellascontributessignificantlytotheappearanceandstrengthoftheyarnsproduced.Theaccuracyofweighingcanbecontrolledbythenumberoffiberscomposingthebundle.However,withshortfiberoflowlineardensitythenumberoffiberstobecountedbecomesprohibitiveunlessthebundlemassiskeptlow.1.1Thistestmethodprovidestwooptionsthatcoverthedeterminationofthefinenessofcleanlooseflaxfibersby:Option1,measuringthespecificsurfaceareabytheresistanceofaplugofflaxfiberstoairflowunderprescribedconditions,orOption2,estimatingthemassperunitlength.Note18212;ForothermethodsfordeterminingthefinenessoffibersrefertoAppendixX1.1.2Thevaluesstated......
【中国标准分类号】:W30
【国际标准分类号】:59_080_20
【页数】:5P.;A4
【正文语种】:英语