NF T77-154-1987 工业用碱性硅树脂.硅烷三醇基含量的测定(硅烷三醇含量小于0.5%(m/m).气量计法

上一篇: NF T77-153-1987 工业用碱性硅树脂.硅含量的测定(硅含量大于1%(m/m)).重量法
下一篇: NF T77-155-1987 工业用基础硅塑料.乙烯类含量的测定(含量大于百分之0.1(m/m)).近红外光谱法

【英文标准名称】:Fibre-reinforcedplasticcomposites-Determinationofflexuralproperties
【原文标准名称】:纤维增强塑料复合材料弯曲性能的测定
【标准号】:ISO14125-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-03
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:挠性;抗弯刚度;纤维增强的;塑料;弯曲试验;试验
【英文主题词】:Bendtesting;Bendingbehaviour;Bendingstiffness;Definitions;Determination;Fibrereinforced;Flexibility;Flexuralstrength;Four-pointmethods;Laminates;Materials;Mechanicaltesting;Plastics;Reinforcedmaterials;Testspecimens;Testing;Three-pointmethods
【摘要】:1ThisInternationalStandardspecifiesamethodfordeterminingtheflexuralpropertiesoffibre-reinforcedplasticcompositesunderthree-point(MethodA)andfour-point(MethodB)loading.Standardtestspecimensaredefinedbutparametersincludedforalternativespecimensizesforusewhereappropriate.Arangeoftestspeedsisincluded.2Themethodisnotsuitableforthedeterminationofdesignparameters,butmaybeusedforscreeningmaterials,orasaquality-controltest.NOTE-Forexample,theflexuralmodulusisonlyanappropriatevalueofthetensileYoung'smodulusofelasticityasthetestisnotfortheadditionaldeflectionduetotheshearstresswhichleadstoalowervalueoftheflexuralmodulusbutusestestspan/specimenthicknessratiosthatminimisethiseffect.Differencesbetweentensileandflexuralpropertiesarealsocausedbythematerialstructure/lay-up.3Themethodissuitableforfibre-reinforcedthermoplasticandthermosettingplasticcomposites.Unreinforcedandparticle-filledplasticsandplasticsreinforcedwithshort(i.e.lessthan1mmlength)fibresarecoveredbyISO178.4Themethodisperformedusingspecimenswhichmaybemouldedtothechosendimensions,machinedfromthecentralportionofthestandardmulti-purposetestspecimen(seeISO3167)ormachinedfromsemi-finishedorfinishedproductssuchasmouldingsorlaminates.5Themethodspecifiespreferreddimensionsforthespecimen.Testswhicharecarriedoutonspecimensofotherdimensions,oronspecimenswhicharepreparedunderdifferentconditions,mayproduceresultswhicharenotcomparable.Otherfactors,suchasthespeedoftestingandtheconditioningofthespecimenscaninfluencetheresults.Formaterialswhicharenothomogeneousthroughthesection,orabovethelinear-elasticresponseregion,theresultappliesonlytothethicknessandstructuretested.Consequently,whencomparativedataarerequired,thesefactorsmustbecarefullycontrolledandrecorded.
【中国标准分类号】:G32
【国际标准分类号】:83_120
【页数】:18P;A4
【正文语种】:英语


【英文标准名称】:StandardGuideforAcousticEmissionExaminationofSmallParts
【原文标准名称】:小件声音扩散检验的标准指南
【标准号】:ASTME1932-1997
【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】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:无损评价;产品质量管理;小件;无损试验;材料特性;声音扩散
【英文主题词】:Acousticmeasurement;Acoustics;Noiseemissions;Non-destructivetesting;Smallparts
【摘要】:
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:5P;A4
【正文语种】:英语