HB 4233-1989 MJ螺纹校对塞规 校通-通TT MJ1.6×0.35~MJ5×0.8
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基本信息
标准名称: | MJ螺纹校对塞规 校通-通TT MJ1.6×0.35~MJ5×0.8 |
中标分类: | 机械 >> 工艺装备 >> 量具与量仪 |
发布日期: | 1989-05-13 |
实施日期: | 1989-12-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
出版日期: | 1900-01-01 |
页数: | 7页 |
适用范围
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前言
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目录
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引用标准
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所属分类: 机械 工艺装备 量具与量仪
下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodsforDeterminingSmall-StrainTensilePropertiesofGeogridsandGeotextilesbyIn-AirCyclicTensionTests
【原文标准名称】:空气中反复张力试验法测定土工格栅和土工布的小张力抗拉特性的标准试验方法
【标准号】:ASTMD7556-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D35.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:geogrid;geogridrib;geosynthetic;geotextile;indextest;tensiletest
【摘要】:TestMethodsA,B,andCprovideameansofevaluatingthetensilemodulusofgeogridsandgeotextilesforapplicationsinvolvingsmall-straincyclicloading.Thetestmethodsallowforthedeterminationofcyclictensilemodulusatdifferentlevelsofprescribedorpermanentstrain,therebyaccountingforpossiblechangesincyclictensilemoduluswithincreasingpermanentstraininthematerial.Thesetestmethodsshallbeusedforresearchtestingandtodefinepropertiesforuseinspecificdesignmethods.Incasesofdisputearisingfromdifferencesinreportedtestresultswhenusingthesetestmethodsforacceptancetestingofcommercialshipments,thepurchaserandsuppliershouldconductcomparativeteststodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimenswhichareashomogeneousaspossibleandwhicharefromalotofmaterialofthetypeinquestion.Thetestspecimensshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingStudentx2019;st-testforunpaireddataandanacceptableprobabilitylevelchosenbythetwopartiesbeforethetestingbegan.Ifabiasisfound,eitheritscauseshallbefoundandcorrectedorthepurchaserandsuppliershallagreetointerpretfuturetestresultsinlightoftheknownbias.AllgeogridscanbetestedbyTestMethodsAorB.Somemodificationoftechniquesmaybenecessaryforagivengeogriddependinguponitsphysicalmake-up.Specialadaptationsmaybenecessarywithstronggeogrids,multiplelayeredgeogrids,orgeogridsthattendtoslipintheclampsorthosewhichtendtobedamagedbytheclamps.MostgeotextilescanbetestedbyTestMethodC.Somemodificationofclampingtechniquesmaybenecessaryforagivengeotextiledependinguponitsstructure.Specialclampingadaptationsmaybenecessarywithstronggeotextilesorgeotextilesmadefromglassfiberstopreventthemfromslippingintheclampsorbeingdamagedasaresultofbeinggrippedintheclamps.Thesetestmethodsareapplicablefortestinggeotextileseitherdryorwet.Itisusedwithaconstantrateofextensiontypetensionapparatus.Thesetestmethodsmaynotbesuitedforgeogridsandgeotextilesthatexhibitstrengthsapproximately100kN/m(600lbf/in.)duetoclampingandequipmentlimitations.Inthosecases,100mm(4in.)widthspecimensmaybesubstitutedfor200mm(8in.)widthspecimens.1.1Thesetestmethodscoverthedeterminationofsmall-straintensilepropertiesofgeogridsandgeotextilesbysubjectingwide-widthspecimenstocyclictensileloading.1.2Thesetestmethods(A,B,andC)allowforthedeterminationofsmall-straincyclictensilemodulusbythemeasurementofcyclictensileloadandelongation.1.3Thistestmethodisintendedtoprovidepropertiesfordesign.Thetestmethodwasdevelopedformechanistic-empiricalpavementdesignmethodsrequiringinputofthereinforcementtensilemodulus.Theuseofcyclicmodulusfromthistestmethodforotherapplicationsinvolvingcyclicloadingshouldbeevaluatedonacase-by-casebasis.1.4Threetestmethods(A,B,andC)areprovidedtodeterminesmall-straincyclictensilemodulusongeogridsandgeotextiles.1.4.1TestMethodA8212;TestingarelativelywidespecimenofgeogridincyclictensioninkN/m(lbf/ft).1.4.2TestMethodB8212;TestingmultiplelayersofarelativelywidespecimenofgeogridincyclictensioninkN/m(lbf/ft).1.4.3TestMethodC......
【中国标准分类号】:W59
【国际标准分类号】:59_080_40
【页数】:6P.;A4
【正文语种】:英语
【原文标准名称】:空气中反复张力试验法测定土工格栅和土工布的小张力抗拉特性的标准试验方法
【标准号】:ASTMD7556-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D35.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:geogrid;geogridrib;geosynthetic;geotextile;indextest;tensiletest
【摘要】:TestMethodsA,B,andCprovideameansofevaluatingthetensilemodulusofgeogridsandgeotextilesforapplicationsinvolvingsmall-straincyclicloading.Thetestmethodsallowforthedeterminationofcyclictensilemodulusatdifferentlevelsofprescribedorpermanentstrain,therebyaccountingforpossiblechangesincyclictensilemoduluswithincreasingpermanentstraininthematerial.Thesetestmethodsshallbeusedforresearchtestingandtodefinepropertiesforuseinspecificdesignmethods.Incasesofdisputearisingfromdifferencesinreportedtestresultswhenusingthesetestmethodsforacceptancetestingofcommercialshipments,thepurchaserandsuppliershouldconductcomparativeteststodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimenswhichareashomogeneousaspossibleandwhicharefromalotofmaterialofthetypeinquestion.Thetestspecimensshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingStudentx2019;st-testforunpaireddataandanacceptableprobabilitylevelchosenbythetwopartiesbeforethetestingbegan.Ifabiasisfound,eitheritscauseshallbefoundandcorrectedorthepurchaserandsuppliershallagreetointerpretfuturetestresultsinlightoftheknownbias.AllgeogridscanbetestedbyTestMethodsAorB.Somemodificationoftechniquesmaybenecessaryforagivengeogriddependinguponitsphysicalmake-up.Specialadaptationsmaybenecessarywithstronggeogrids,multiplelayeredgeogrids,orgeogridsthattendtoslipintheclampsorthosewhichtendtobedamagedbytheclamps.MostgeotextilescanbetestedbyTestMethodC.Somemodificationofclampingtechniquesmaybenecessaryforagivengeotextiledependinguponitsstructure.Specialclampingadaptationsmaybenecessarywithstronggeotextilesorgeotextilesmadefromglassfiberstopreventthemfromslippingintheclampsorbeingdamagedasaresultofbeinggrippedintheclamps.Thesetestmethodsareapplicablefortestinggeotextileseitherdryorwet.Itisusedwithaconstantrateofextensiontypetensionapparatus.Thesetestmethodsmaynotbesuitedforgeogridsandgeotextilesthatexhibitstrengthsapproximately100kN/m(600lbf/in.)duetoclampingandequipmentlimitations.Inthosecases,100mm(4in.)widthspecimensmaybesubstitutedfor200mm(8in.)widthspecimens.1.1Thesetestmethodscoverthedeterminationofsmall-straintensilepropertiesofgeogridsandgeotextilesbysubjectingwide-widthspecimenstocyclictensileloading.1.2Thesetestmethods(A,B,andC)allowforthedeterminationofsmall-straincyclictensilemodulusbythemeasurementofcyclictensileloadandelongation.1.3Thistestmethodisintendedtoprovidepropertiesfordesign.Thetestmethodwasdevelopedformechanistic-empiricalpavementdesignmethodsrequiringinputofthereinforcementtensilemodulus.Theuseofcyclicmodulusfromthistestmethodforotherapplicationsinvolvingcyclicloadingshouldbeevaluatedonacase-by-casebasis.1.4Threetestmethods(A,B,andC)areprovidedtodeterminesmall-straincyclictensilemodulusongeogridsandgeotextiles.1.4.1TestMethodA8212;TestingarelativelywidespecimenofgeogridincyclictensioninkN/m(lbf/ft).1.4.2TestMethodB8212;TestingmultiplelayersofarelativelywidespecimenofgeogridincyclictensioninkN/m(lbf/ft).1.4.3TestMethodC......
【中国标准分类号】:W59
【国际标准分类号】:59_080_40
【页数】:6P.;A4
【正文语种】:英语
基本信息
标准名称: | 显微镜 放大率 |
英文名称: | Microscopes - Magnifying power |
中标分类: | 仪器、仪表 >> 光学仪器 >> 放大镜与显微镜 |
ICS分类: | 成像技术 >> 光学设备 |
发布部门: | 中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会 |
发布日期: | 2008-06-20 |
实施日期: | 2009-01-01 |
首发日期: | 2008-06-20 |
作废日期: | |
主管部门: | 中国机械工业联合会 |
提出单位: | 中国机械工业联合会 |
归口单位: | 全国光学和光子学标准化技术委员会 |
起草单位: | 上海光学仪器研究所、上海理工大学等 |
起草人: | 胡钰、章慧贤 |
出版社: | 中国标准出版社 |
出版日期: | 2009-01-01 |
页数: | 12页 |
计划单号: | 20051618-T-604 |
适用范围
本标准为首次发布。本标准规定了可见光显微镜成像部件放大率的数值系列及其所应用的若干放大系统。
前言
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引用标准
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GB/T321 优先数和优先数系
所属分类: 仪器 仪表 光学仪器 放大镜与显微镜 成像技术 光学设备