【英文标准名称】:Plastics-Determinationofthebrittlenesstemperaturebyimpact
【原文标准名称】:塑料.用冲击法测定脆性温度
【标准号】:BSISO974-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-05-15
【实施或试行日期】:2000-05-15
【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】:试验设备;尺寸;环境温度;试样制备;脆性;统计检验;材料的机械性能;塑料;损坏;塑料和橡胶技术;公差(测量);冲击试验;温度
【英文主题词】:
【摘要】:ThisInternationalStandardspecifiesamethodforthedeterminationofthetemperatureatwhichplasticsthatarenotrigidatnormalambienttemperatureexhibitbrittlefailureunderspecifiedimpactconditions.Asupplementarytechniqueusingnotchedspecimensdevelopsbrittlenessvaluesatamuchhighertemperaturethanareobservedforunnotchedspecimensofthesameplasticmaterial.Themethodutilizesastatisticaltechniquetoquantifythebrittlenessfailuretemperature.Provisionsaremadeforthetestingofsufficientspecimenstopermitthecalculationofthebrittlenesstemperatureonastatisticalbasis.Statisticaltechniqueshavebeendevelopedtoquantifythebrittlenesstemperatureasisdefinedin3.1.Themethodestablishesthetemperatureatwhichthereisa50%chanceoffailureineitherunnotchedornotchedspecimens.Thismethodhasbeenfoundusefulforspecificationpurposes,althoughitdoesnotnecessarilymeasurethelowesttemperatureatwhichthematerialmaybeused.Inthemeasurementofthebrittlenesstemperature,theprecisionofthemeasurementshouldpreferablybe±5℃attheworstwhenestablishingvaluesusedinmaterialspecifications.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:16P;A4
【正文语种】:英语