BS EN ISO 899-2-2003 塑料.蠕变的测定.用三点加载法测定挠曲蠕变
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【英文标准名称】:Plastics-Determinationofcreepbehaviour-Flexuralcreepbythree-pointloading
【原文标准名称】:塑料.蠕变的测定.用三点加载法测定挠曲蠕变
【标准号】:BSENISO899-2-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-06-18
【实施或试行日期】:2003-06-18
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:蠕变性能;应力;定义;试样;蠕变试验;弯曲;弯曲试验;应力耐久性;测定;塑料;抗弯应力;材料试验;热塑性聚合物;热固性聚合物;表示法;三点负载;试验报告;刚性;材料;特性;试验
【英文主题词】:Bendtesting;Bending;Bendingstrength;Bendingstress;Creep;Creepbehaviour;Creepproperties;Creeprupturetests;Creeptest;Creeptesting;Definition;Definitions;Determination;Materials;Materialstesting;Plastics;Properties;Representations;Rigid;Stress;Stressendurance;Tensilestrength;Testreports;Testspecimens;Testing;Tests;Thermoplasticpolymers;Thermosettingpolymers;Three-pointloading
【摘要】:1.1ThispartofISO899specifiesamethodfordeterminingtheflexuralcreepofplasticsintheformofstandardtestspecimensunderspecifiedconditionssuchasthoseofpretreatment,temperatureandhumidity.Itappliesonlytoasimplefreelysupportedbeamloadedatmid-span(three-point-loadingtest).1.2Themethodissuitableforusewithrigidandsemi-rigidnon-reinforced,filledandfibre-reinforcedplasticsmaterials(seeISO472fordefinitions)intheformofdumb-bell-shapedtestspecimensmouldeddirectlyormachinedfromsheetsormouldedarticles.NOTEThemethodmaybeunsuitableforcertainfibre-reinforcedmaterialsduetodifferencesinfibreorientation.1.3Themethodisintendedtoprovidedataforengineering-designandresearchanddevelopmentpurposes.Dataforengineering-designpurposesrequirestheuseofextensometerstomeasurethegaugelengthofthespecimen.Dataforresearchorquality-controlpurposesmayusethechangeindistancebetweenthegrips(nominalextension).1.4Flexuralcreepmayvarysignificantlywithdifferencesinspecimenpreparationanddimensionsandinthetestenvironment.Thethermalhistoryofthetestspecimencanalsohaveprofoundeffectsonitscreepbehaviour(seeAnnexA).Consequently,whenprecisecomparativeresultsarerequired,thesefactorsmustbecarefullycontrolled.1.5Ifflexural-creeppropertiesaretobeusedforengineering-designpurposes,theplasticsmaterialsshouldbetestedoverabroadrangeofstresses,timesandenvironmentalconditions.1.6Themethodmaynotbesuitablefordeterminingtheflexuralcreepofrigidcellularplastics(attentionisdrawninthisrespecttoISO1209-1,Cellularplastics,rigid—Flexuraltests—Part1:Bendingtest,andISO1209-2,Cellularplastics,rigid—Flexuraltests—Part2:Determinationofflexuralproperties).
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:24P.;A4
【正文语种】:英语
【原文标准名称】:塑料.蠕变的测定.用三点加载法测定挠曲蠕变
【标准号】:BSENISO899-2-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-06-18
【实施或试行日期】:2003-06-18
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:蠕变性能;应力;定义;试样;蠕变试验;弯曲;弯曲试验;应力耐久性;测定;塑料;抗弯应力;材料试验;热塑性聚合物;热固性聚合物;表示法;三点负载;试验报告;刚性;材料;特性;试验
【英文主题词】:Bendtesting;Bending;Bendingstrength;Bendingstress;Creep;Creepbehaviour;Creepproperties;Creeprupturetests;Creeptest;Creeptesting;Definition;Definitions;Determination;Materials;Materialstesting;Plastics;Properties;Representations;Rigid;Stress;Stressendurance;Tensilestrength;Testreports;Testspecimens;Testing;Tests;Thermoplasticpolymers;Thermosettingpolymers;Three-pointloading
【摘要】:1.1ThispartofISO899specifiesamethodfordeterminingtheflexuralcreepofplasticsintheformofstandardtestspecimensunderspecifiedconditionssuchasthoseofpretreatment,temperatureandhumidity.Itappliesonlytoasimplefreelysupportedbeamloadedatmid-span(three-point-loadingtest).1.2Themethodissuitableforusewithrigidandsemi-rigidnon-reinforced,filledandfibre-reinforcedplasticsmaterials(seeISO472fordefinitions)intheformofdumb-bell-shapedtestspecimensmouldeddirectlyormachinedfromsheetsormouldedarticles.NOTEThemethodmaybeunsuitableforcertainfibre-reinforcedmaterialsduetodifferencesinfibreorientation.1.3Themethodisintendedtoprovidedataforengineering-designandresearchanddevelopmentpurposes.Dataforengineering-designpurposesrequirestheuseofextensometerstomeasurethegaugelengthofthespecimen.Dataforresearchorquality-controlpurposesmayusethechangeindistancebetweenthegrips(nominalextension).1.4Flexuralcreepmayvarysignificantlywithdifferencesinspecimenpreparationanddimensionsandinthetestenvironment.Thethermalhistoryofthetestspecimencanalsohaveprofoundeffectsonitscreepbehaviour(seeAnnexA).Consequently,whenprecisecomparativeresultsarerequired,thesefactorsmustbecarefullycontrolled.1.5Ifflexural-creeppropertiesaretobeusedforengineering-designpurposes,theplasticsmaterialsshouldbetestedoverabroadrangeofstresses,timesandenvironmentalconditions.1.6Themethodmaynotbesuitablefordeterminingtheflexuralcreepofrigidcellularplastics(attentionisdrawninthisrespecttoISO1209-1,Cellularplastics,rigid—Flexuraltests—Part1:Bendingtest,andISO1209-2,Cellularplastics,rigid—Flexuraltests—Part2:Determinationofflexuralproperties).
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:24P.;A4
【正文语种】:英语
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