BS 2782-10 Method 1005-1977 塑料的试验方法.第10部分:玻璃纤维增强塑料.试验方法1005:挠曲特性测定.三点法
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【英文标准名称】:Methodsoftestingplastics-Glassreinforcedplastics-Determinationofflexuralproperties-Threepointmethod
【原文标准名称】:塑料的试验方法.第10部分:玻璃纤维增强塑料.试验方法1005:挠曲特性测定.三点法
【标准号】:BS2782-10Method1005-1977
【标准状态】:现行
【国别】:英国
【发布日期】:1977-08-31
【实施或试行日期】:1977-08-31
【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】:弯曲试验;复合材料;试验条件;玻璃纤维;尺寸;试样;塑料;高聚物;增强的材料
【英文主题词】:Bendtesting;Bendingstress;Dimensions;Glass-fibrereinforced;Glass-fibrereinforcedplastics;Modulusofelasticity;Plastics;Strengthofmaterials;Testequipment;Testspecimens;Testing
【摘要】:ThisEuropeanStandarddescribesamethodforthedeterminationofflexuralpropertiesoftextileglassreinforcedplasticsintheformofrectangularbarsofstandardornon-standarddimensions,mouldeddirectlyorcutfromsheetsorothermouldedshapes.Itonlyappliestosimple,freelysupportedbeams,loadedatmid-span(threepointloadingtest).Thefollowingpropertiesmaybedeterminedusingthemethoddescribed:1Theflexuralstressandthedeflectionatbreakofmaterialsthatbreakbefore,orat,theconventionaldeflection.2Theflexuralstressattheconventionaldeflectionofmaterialsthatdonotbreakbefore,orat,theconventionaldeflection.3Theflexuralstressatthemaximumforceformaterialsthatshowmaximumforcebefore,orat,theconventionaldeflection.4Theflexuralstressatbreakoratmaximumforce,whentheconventionaldeflectionisexceeded,ifsorequiredbythematerialspecification.NOTE.Iftheconventionaldeflectionisexceededitmaynotbepossibletomakedirectcomparisonofresultsofflexuralstressontestspecimensofdifferentthicknesses.5Optional:theapparentmodulusofelasticityinflexure(modulusofelasticitydeterminedbyflexuretest).NOTE.ThemodulusofelasticityinflexureistobeconsideredonlyasanapproximatevalueofYoung'smodulusofelasticity.note:*Itmaybeusefultoprovideanoptionalmethodinwhichtheforceisappliedbytwoloadingnoses(fourpointloadingtest).Afourpointloadingtestallowsmeasurementofapureflexuralforceinthemiddlepartofthetestspecimen.Thecompressivestressesduetothetwocentralnosesaremuchlowerincomparisonwiththestressesinducedundertheonecentralloadingnoseofthethreepointtest.(ThisEuropeanStandarddoesnotcoverthefourpointloadingtest.)
【中国标准分类号】:G32;G31
【国际标准分类号】:83_120
【页数】:10P.;A4
【正文语种】:英语
【原文标准名称】:塑料的试验方法.第10部分:玻璃纤维增强塑料.试验方法1005:挠曲特性测定.三点法
【标准号】:BS2782-10Method1005-1977
【标准状态】:现行
【国别】:英国
【发布日期】:1977-08-31
【实施或试行日期】:1977-08-31
【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】:弯曲试验;复合材料;试验条件;玻璃纤维;尺寸;试样;塑料;高聚物;增强的材料
【英文主题词】:Bendtesting;Bendingstress;Dimensions;Glass-fibrereinforced;Glass-fibrereinforcedplastics;Modulusofelasticity;Plastics;Strengthofmaterials;Testequipment;Testspecimens;Testing
【摘要】:ThisEuropeanStandarddescribesamethodforthedeterminationofflexuralpropertiesoftextileglassreinforcedplasticsintheformofrectangularbarsofstandardornon-standarddimensions,mouldeddirectlyorcutfromsheetsorothermouldedshapes.Itonlyappliestosimple,freelysupportedbeams,loadedatmid-span(threepointloadingtest).Thefollowingpropertiesmaybedeterminedusingthemethoddescribed:1Theflexuralstressandthedeflectionatbreakofmaterialsthatbreakbefore,orat,theconventionaldeflection.2Theflexuralstressattheconventionaldeflectionofmaterialsthatdonotbreakbefore,orat,theconventionaldeflection.3Theflexuralstressatthemaximumforceformaterialsthatshowmaximumforcebefore,orat,theconventionaldeflection.4Theflexuralstressatbreakoratmaximumforce,whentheconventionaldeflectionisexceeded,ifsorequiredbythematerialspecification.NOTE.Iftheconventionaldeflectionisexceededitmaynotbepossibletomakedirectcomparisonofresultsofflexuralstressontestspecimensofdifferentthicknesses.5Optional:theapparentmodulusofelasticityinflexure(modulusofelasticitydeterminedbyflexuretest).NOTE.ThemodulusofelasticityinflexureistobeconsideredonlyasanapproximatevalueofYoung'smodulusofelasticity.note:*Itmaybeusefultoprovideanoptionalmethodinwhichtheforceisappliedbytwoloadingnoses(fourpointloadingtest).Afourpointloadingtestallowsmeasurementofapureflexuralforceinthemiddlepartofthetestspecimen.Thecompressivestressesduetothetwocentralnosesaremuchlowerincomparisonwiththestressesinducedundertheonecentralloadingnoseofthethreepointtest.(ThisEuropeanStandarddoesnotcoverthefourpointloadingtest.)
【中国标准分类号】:G32;G31
【国际标准分类号】:83_120
【页数】:10P.;A4
【正文语种】:英语
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