【英文标准名称】:Implantsforsurgery-Ultra-high-molecular-weightpolyethylene-Part3:Acceleratedageingmethods
【原文标准名称】:外科植入物.超高分子量聚乙烯.第3部分:加速老化法
【标准号】:ISO5834-3-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-07
【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/TC150
【标准类型】:()
【标准水平】:()
【中文主题词】:老化;铸件;定义;交货条件;密度;含量测定;配件;外科植入物;加标签;作标记;材料;医疗设备;医学科学;聚乙烯;超高分子量聚乙烯;塑料;粉末;性能;半成品;规范(验收);规范;外科学;测试;试验;钛;UHMWPE;UHMWPE模制;超高分子
【英文主题词】:Ageing(materials);Castings;Definition;Definitions;Deliveryconditions;Density;Determinationofcontent;Fittings;Implants(surgical);Labelling(process);Marking;Materials;Medicalequipment;Medicalsciences;PE;PE-UHMW;Plastics;Polyethylene;Powder;Properties;Semi-finishedproducts;Specification(approval);Specifications;Surgery;Surgicalimplants;Testing;Tests;Titanium;UHMWPE;UHMWPE-Mouldings;Ultrahighmolecular
【摘要】:ThispartofISO5834specifiesatestmethodforinvestigatingtheoxidativestabilityofultra-high-molecular-weightpolyethylene(UHMWPE)materialsasafunctionofprocessingandsterilizationmethod.ThispartofISO5834describesalaboratorymethodforacceleratedageingofUHMWPEspecimensandcomponentsfortotaljointprostheses.TheUHMWPEisagedatelevatedtemperatureandatelevatedoxygenpressure,toaccelerateoxidationofthematerialandtherebyallowfortheevaluationofitspotentiallong-termchemicalandmechanicalstability.
【中国标准分类号】:C35
【国际标准分类号】:11_040_40
【页数】:4P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforShearModulusatRoomTemperature
【原文标准名称】:室温下剪切模量的标准试验方法
【标准号】:ASTME143-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:E28.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:剪切模量;试验
【英文主题词】:shearmodulus;stress-straindiagram;torque-twistdiagram
【摘要】:ShearmodulusisamaterialpropertyusefulincalculatingcomplianceofstructuralmaterialsintorsionprovidedtheyfollowHooke’law,thatis,theangleoftwistisproportionaltotheappliedtorque.Examplesoftheuseofshearmodulusareinthedesignofrotatingshaftsandhelicalcompressionsprings.Note38212;Formaterialsthatfollownonlinearelasticstress-strainbehavior,thevalueoftangentorchordshearmodulusisusefulforestimatingthechangeintorsionalstraintocorrespondingstressforaspecifiedstressorstress-range,respectively.Suchdeterminationsare,however,outsidethescopeofthisstandard.(SeeforexampleRef(1).)3Theproceduralstepsandprecisionoftheapparatusandthetestspecimensshouldbeappropriatetotheshapeandthematerialtype,sincethemethodappliestoawidevarietyofmaterialsandsizes.Precisedeterminationofshearmodulusdependsonthenumerousvariablesthatmayaffectsuchdeterminations.5.3.1Thesefactorsincludecharacteristicsofthespecimensuchasresidualstress,concentricity,wallthicknessinthecaseoftubes,deviationfromnominalvalue,previousstrainhistoryandspecimendimension.5.3.2Testingconditionsthatinfluencetheresultsinclude:axialpositionofthespecimen,temperatureandtemperaturevariations,andmaintenanceoftheapparatus.5.3.3Interpretationofdataalsoinfluencesresults.1.1Thistestmethodcoversthedeterminationofshearmodulusofstructuralmaterials.Thistestmethodislimitedtomaterialsinwhich,andtostressesatwhich,creepisnegligiblecomparedtothestrainproducedimmediatelyuponloading.Elasticpropertiessuchasshearmodulus,Young'smodulus,andPoisson'sratioarenotdeterminedroutinelyandaregenerallynotspecifiedinmaterialsspecifications.Precisionandbiasstatementsforthesetestmethodsarethereforenotavailable.1.2Valuesstatedininch-poundunitsaretoberegardedasthestandard.SIunitsareprovidedforinformationonly.1.3ttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H23
【国际标准分类号】:77_040_10
【页数】:5P.;A4
【正文语种】: