【英文标准名称】:StandardTestMethodforTensilePropertiesofGlassFiberStrands,Yarns,andRovingsUsedinReinforcedPlastics
【原文标准名称】:增强塑料用玻璃纤维股,纱线和粗纱的抗拉特性的标准试验方法
【标准号】:ASTMD2343-2009
【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】:D20.18
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:glassfibers;impregnatedglassstrands;reinforcedplastics;rovings;tensilestrength;yarns;Glass-fiber-reinforced(GRP)plastics;Impregnatedglassstrands;Reinforcedplastics;Roving;Tensileproperties/testing--plastics;Yarns
【摘要】:Tensilepropertiesdeterminedbythistestmethodareofvalueforidentifyingandcharacterizingmaterialsforcontrolandspecificationpurposesaswellasforprovidingdataforresearchanddevelopmentstudies.Thistestmethodisintendedforuseintestingresin-compatiblesizedglassfibermaterialsthathavebeendesignedspecificallyforusewithcertaingenerictypesofplastics.Theuseofaresinimpregnantthatiscompatiblewiththereinforcementmaterialundertestproducesresultsthataremostrepresentativeoftheactualstrengththatisavailableinthematerialwhenusedasintendedinanenditem.Prematurereinforcementfailuremayoccuriftheelongationoftheresinsystemislessthanthatofthereinforcementbeingtested.Thisrequirementmayrestricttheuseofcertainresinsystemsinthisprocedure.Misleadingresultsmaybeobtainedwhenglassfibermaterialsaretestedwithoutcompleteresinimpregnationofthefiberorwhenanon-compatibleresinisusedforimpregnation.Thistestmethodisusefulfortestingpretreatedspecimensforwhichcomparativeresultsaredesired.Valuesobtainedbythistestmethodmaybeaffectedbygagelength,grippingsystem,testingspeed,andtheresinimpregnationratioofthespecimen.1.1Thistestmethodcoversthedeterminationofthecomparativetensilepropertiesofglassfiberstrands,yarns,androvingsintheformofimpregnatedrodtestspecimenswhentestedunderdefinedconditionsofpretreatment,temperature,humidity,andtensiontestingmachinespeed.Thistestmethodisapplicabletocontinuousfilament,glassfibermaterialsthathavebeencoatedwitharesincompatiblesizing.ThismethodisintendedforuseinqualitycontrolandRx0026;D,andshouldnotbeusedtodevelopcompositesdesigndata.Note18212;ThismethodistechnicallyequivalenttotheshortmethoddescribedinISO9163.Note28212;Primeconsiderationshouldbegiventotheuseofapolymericbinderthatproducesspecimensthatyieldthehighestconsistentvaluesfortheglassfibermaterialundertest.Tensilepropertiesmayvarywithspecimenpreparation,resinimpregnationsystem,andspeedandenvironmentoftesting.Consequently,whereprecisecomparativeresultsaredesired,thesefactorsmustbecarefullycontrolled.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Note38212;Primeconsiderationshouldbegiventotheuseofapolymericbinderthatproducesspecimensthatyieldthehighestconsistentvaluesfortheglassfibermaterialundertest.Tensilepropertiesmayvarywithspecimenpreparation,resinimpregnationsystem,andspeedandenvironmentoftesting.Consequently,whereprecisecomparativeresultsaredesired,thesefactorsmustbecarefullycontrolled.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:
【页数】:7P.;A4
【正文语种】:英语


【英文标准名称】:StandardGuideforMonitoringAqueousNutrientsinWatersheds
【原文标准名称】:检测分水界水溶氮的标准指南
【标准号】:ASTMD6146-1997
【标准状态】:现行
【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】:磷;培养基;地下水;监控;大气的;地表水;氮;水质;环境指示器;河口湾;非定点来源的污染;定点来源的污染;土壤孔隙水;渗流区域;水的检测;分水界检测
【英文主题词】:groundwater;nitrogen;monitoring;environmentalindicators;estuary;nonpointsourcepollution;pointsourcepollution;soilporewater;watermonitoring;watershedmonitoring;phosphorus;waterquality;atmosp
【摘要】:
【中国标准分类号】:D04
【国际标准分类号】:
【页数】:
【正文语种】:英语