JJG 549-1988 方波极谱仪试行检定规程
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时间:2024-05-22 03:35:06
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基本信息
标准名称: | 方波极谱仪试行检定规程 |
英文名称: | Verification Regulation of Square Wave Polarograph |
中标分类: |
综合 >>
计量 >>
化学计量 |
发布部门: | 国家计量局 |
发布日期: | 1988-03-22 |
实施日期: | 1989-02-01 |
首发日期: | |
作废日期: | |
归口单位: | 上海市标准计量管理局 |
起草单位: | 上海市测试技术研究所 |
起草人: | 蒋予刚 |
出版社: | 中国计量出版社 |
出版日期: | |
页数: | 15页 |
适用范围
本规程适用于新制造、使用中及修理后的方波极谱仪的检定。
前言
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目录
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引用标准
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所属分类: 综合 计量 化学计量
【英文标准名称】:StandardTestMethodforWearTestingofPolymericMaterialsUsedinTotalJointProstheses
【原文标准名称】:在全连接假肢上对聚合材料的磨耗试验的标准试验方法
【标准号】:ASTMF732-2000(2006)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:F04.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:连接件;评定;摩擦;回程缸;材料;高聚物;特性;修复装置;密封;密封件;试验;轮胎;磨损
【英文主题词】:jointprosthesismaterials;pin-on-disk;weartesting
【摘要】:Thistestmethodisintendedtobeperformedinconjunctionwithpin-on-flatwearmachinesorsimilarmachinesthataredesignedtoevaluatesimplifiedspecimengeometries.Thistestmethodisdesignedtoevaluatecombinationsofmaterialswithrespecttotheamountofpolymerwear,wherequantifiablewearoccursprimarilyonthepolymericcomponent.Withsomecombinationsofmaterials,significantwearofthecounterfacemayoccur,withsubsequentembeddingofcounterfacedebrisparticlesinthepolymer.Suchanoccurrencewillrendertheweightlossofthepolymerspecimenunreliableasanindicatorofthepolymerwear.Wearisreportedasvolumelossofthepolymericspecimenasafunctionofslidingdistance;however,iftheslidingdistanceisnotconstantacrossthepolymericspecimensurfaceduetocomplexmotionpatterns,wearmaybereportedasvolumelossofthepolymericspecimenasafunctionofwearcycles(inwhichcaseax201C;wearcyclex201D;shallbedefined).Volumelossofthepolymerspecimenisdeterminedbydividingtheexperimentalweightlossbythedensityofthepolymer.Foreaseofinterpretation,wearshouldbereportedasafunctionofboththenumberofwearcyclesandtheslidingdistance,whenpossible.Thereferenceforthecomparativeevaluationofcandidatematerialsshallbethewearrateofultra-high-molecular-weightpolyethylene(UHMWPE)conformingtoSpecificationF648bearingagainstcounterfacesofcobalt-chromium-molybdenumalloy(inaccordancewithSpecificationsF75,F799,orF1537),havingprosthetic-qualitysurfacefinishandlubricatedwithbovinebloodserum(see5.2).1.1Thistestmethoddescribesalaboratorymethodforevaluatingthewearpropertiesofcombinationsofmaterialsthatarebeingconsideredforuseasbearingsurfacesofhumantotaljointprostheses.Thebodyofthistestmethodcontainsgeneralmethodswhichapplytoalltypesofprosthesiswearapplicationswhileindividualannexesdescribespecificweartestmethodsandclinicalvalidationcriteriatailoredtoeachdistinctwearapplication(forexample,linearreciprocatingmotion,ball-cup("hip-type")wear,delaminationwear,etc.).Itistheintentofthistestmethodtorankmaterials,withineachwearapplication,forpolymerwearratesundersimulatedphysiologicalconditions.Itmustberecognized,however,thatcontactgeometriesandwearmotionsaresimplifiedusingsuchmethods.Thistestmethod,therefore,representsonlyaninitialstageinthefullwearcharacterizationofacandidatematerial.1.2Allcandidatematerialsshouldbetestedinanappropriatejointsimulatorapparatususingprototypeprosthesesbeforebeingusedinclinicaltrialsinpatients.Thetestsdescribedinthistestmethodareusedtoquicklyandreliablyscreenmaterialcombinationsforwearperformanceindifferentorthopaedicwearapplicationspriortocommittingthemtomoreexpensiveandtime-consumingjointsimulatortesting.Inaddition,thesesimplifiedtestscanbeusedtorelatematerial,surfacefinish,orotherparameterstowearbehavioronamorepracticalbasisthanispossibleinjointsimulatortests.
【中国标准分类号】:C35
【国际标准分类号】:11_040_40
【页数】:10P.;A4
【正文语种】:
【英文标准名称】:Opticsandopticalinstruments.Preparationofdrawingsforopticalelementsandsystems.Part7:surfaceimperfectiontolerances.
【原文标准名称】:光学和光学仪器.光学元件和系统用图纸制备.第7部分:表面缺陷公差
【标准号】:NFS10-008-7-1996
【标准状态】:作废
【国别】:法国
【发布日期】:1996-12-01
【实施或试行日期】:1996-12-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:工程图;图解表示法;图形表示;尺寸公差;视图;光学仪器;意见;光学;编写;表面不连续性;不合格的材料;表示法;定义;光学设备;公差(测量);尺寸选定
【英文主题词】:
【摘要】:
【中国标准分类号】:N30
【国际标准分类号】:01_100_20;37_020
【页数】:20P;A4
【正文语种】:其他