ISO 139-1973 纺织品调湿和试验用标准大气
作者:标准资料网 时间:2024-05-27 08:29:06 浏览:9868
来源:标准资料网
【英文标准名称】:Textiles;Standardatmospheresforconditioningandtesting
【原文标准名称】:纺织品调湿和试验用标准大气
【标准号】:ISO139-1973
【标准状态】:作废
【国别】:国际
【发布日期】:1973-09
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC38
【标准类型】:()
【标准水平】:()
【中文主题词】:准备;试验条件;纺织材料;标准气候;标准大气压;受控大气;试验
【英文主题词】:
【摘要】:
【中国标准分类号】:A69
【国际标准分类号】:59_080_01
【页数】:3P;A4
【正文语种】:英语
基本信息
| 标准名称： | 容器外观与最低充填量 |
| 中标分类： |
食品 >>
食品加工与制品 >>
果类加工与制品 |
| 替代情况： | 改号为NY/T 82.3-1988 |
| 发布日期： | |
| 实施日期： | 2002-09-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 1页 |
适用范围
没有内容
前言
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目录
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引用标准
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所属分类： 食品 食品加工与制品 果类加工与制品
【英文标准名称】:StandardTestMethodforShearPropertiesofCompositeMaterialsbyV-NotchedRailShearMethod
【原文标准名称】:用v型切口梁剪切试验测定复合材料剪切特性的标准试验方法
【标准号】:ASTMD7078/D7078M-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:D30.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compositematerials;in-planeshear;interlaminarshear;shearmodulus;shearproperties;shearstrength;sheartesting
【摘要】:Thissheartestisdesignedtoproduceshearpropertydataformaterialspecifications,researchanddevelopment,qualityassurance,andstructuraldesignandanalysis.Eitherin-planeorinterlaminarshearpropertiesmaybeevaluated,dependingupontheorientationofthematerialcoordinatesystemrelativetotheloadingaxis.Factorsthatinfluencetheshearresponseandshouldthereforebereportedinclude:material,methodsofmaterialpreparationandlay-up,specimenstackingsequence,specimenpreparation,specimenconditioning,environmentoftesting,specimenalignmentandgripping,speedoftesting,timeattemperature,voidcontent,andvolumepercentreinforcement.Inanisotropicmaterials,propertiesmaybeobtainedinanyofthesixpossibleshearplanesbyorientingthetestingplaneofthespecimenwiththedesiredmaterialplane(1-2or2-1,1-3or3-1,2-3or3-2).Onlyasingleshearplanemaybeevaluatedforanygivenspecimen.Properties,inthetestdirection,whichmaybeobtainedfromthistestmethod,includethefollowing:5.2.1Shearstressversusengineeringshearstrainresponse,5.2.2Ultimateshearstrength,5.2.3Ultimateengineeringshearstrain,5.2.4Shearchordmodulusofelasticity,5.2.5Transitionstrain.1.1Thistestmethodcoversthedeterminationoftheshearpropertiesofhigh-modulusfiber-reinforcedcompositematerialsbyclampingtheendsofaV-notchedspecimenbetweentwopairsofloadingrails.Whenloadedintension,therailsintroduceshearforcesintothespecimenthroughthespecimenfaces.Incomparison,thespecimenofTestMethodD5379/D5379Misloadedthroughitstopandbottomedges.Faceloadingallowshighershearforcestobeappliedtothespecimen,ifrequired.Additionally,thepresenttestmethodutilizesaspecimenwithalargergagesectionthantheV-notchedspecimenofTestMethodD5379/D5379M.Inbothtestmethods,theuseofaV-notchedspecimenincreasesthegagesectionshearstressesinrelationtotheshearstressesinthevicinityofthegrips,thuslocalizingthefailurewithinthegagesectionwhilecausingtheshearstressdistributiontobemoreuniformthaninaspecimenwithoutnotches.Incomparison,TestMethodD4255/D4255Mutilizesanunnotchedspecimenclampedbetweentwopairsofloadingrailsthatareloadedintension.AlsoincontrasttoTestMethodD4255/D4255M,thepresenttestmethodprovidesspecimengrippingwithouttheneedforholesinthespecimen.Thecompositematerialsarelimitedtocontinuous-fiberordiscontinuous-fiber-reinforcedcompositesinthefollowingmaterialforms:1.1.1Laminatescomposedonlyofunidirectionalfibrouslaminae,withthefiberdirectionorientedeitherparallelorperpendiculartothefixturerails.1.1.2Laminatesofbalancedandsymmetricconstruction,withthe0directionorientedeitherparallelorperpendiculartothefixturerails.1.1.3Laminatescomposedofwoven,braided,orknittedfabricfilamentarylaminae.1.1.4Short-fiber-reinforcedcompositeswithamajorityofthefibersbeingrandomlydistributed.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetexttheinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuse......
【中国标准分类号】:G31
【国际标准分类号】:83_140_20
【页数】:15P.;A4
【正文语种】:英语
