ASTM D 2282-1994 丙烯腈-丁二烯-苯乙烯共聚物(ABS)塑料管(SDR-PR)
时间:2024-05-17 16:39:47 来源: 标准资料网 作者：标准资料网 阅读：9839
【英文标准名称】:Acrylonitrile-Butadiene-Styrene(ABS)PlasticPipe(SDR-PR)
【原文标准名称】:丙烯腈-丁二烯-苯乙烯共聚物(ABS)塑料管(SDR-PR)
【标准号】:ASTMD2282-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【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】:丙烯腈-丁二烯-苯乙烯共聚物;塑料管;建筑;塑料制品;塑料;管
【英文主题词】:construction;plasticpipes;plasticsproducts;acrylonitrilebutadienestyrene;plastics;pipes
【摘要】:
【中国标准分类号】:G33
【国际标准分类号】:23_040_20
【页数】:
【正文语种】:英语
【英文标准名称】:Informationtechnology-Codingofaudio-visualobjects-Part16:AnimationFrameworkeXtension(AFX)
【原文标准名称】:信息技术.视听对象编码程序.第16部分:动画框架扩展(AFX)
【标准号】:ISO/IEC14496-16-2011
【标准状态】:现行
【国别】:国际
【发布日期】:2011-11
【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/IECJTC1/SC29
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Acousticsignals;Codedrepresentation;Coding(dataconversion);Computergames;Computergraphics;Dataobjekt;Dataprocessing;Encoding;Formats;Functionality;Games;Graphicarts;Imageprocessing;Informationtechnology;Interactive;MPEG;Multimedia;Systemarchitecture;Videogames;Videosignals
【摘要】:
【中国标准分类号】:L71
【国际标准分类号】:35_040
【页数】:385P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforOccipital-CervicalandOccipital-Cervical-ThoracicSpinalImplantConstructsinaVertebrectomyModel
【原文标准名称】:在椎骨切除术模型中枕颈和枕颈-胸椎植入构造的标准试验方法
【标准号】:ASTMF2706-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:F04.25
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fatiguetestmethods;occipital-cervicalspinalimplantassembly;occipital-cervicalspinalimplantconstruct;occipital-cervical-thoracicspinalimplantassembly;occipital-cervical-thoracicspinalimplantconstruct;statictestmethods;vertebrectomymo
【摘要】:Occipital-cervicalandoccipital-cervical-thoracicspinalimplantsaregenerallycomposedofseveralcomponentswhich,whenconnectedtogether,formeitheranoccipital-cervicalspinalimplantassemblyoranoccipital-cervical-thoracicspinalimplantassembly.Occipital-cervicalandoccipital-cervical-thoracicspinalimplantassembliesaredesignedtoprovidesomestabilitytothespineduringtheprocessofarthrodesis.Thesetestmethodsoutlinestandardmaterialsandmethodsfortheevaluationofdifferentspinalimplantassembliestofacilitatecomparisonsbetweendifferentdesigns.Thesetestmethodsareusedtoquantifythestaticanddynamicmechanicalcharacteristicsofdifferentdesignsofoccipital-cervicalandoccipital-cervical-thoracicspinalimplantassemblies.Themechanicaltestsareconductedinvitrousingsimplifiedloadschemesanddonotattempttomimicthecomplexloadsoftheoccipital-cervicalandoccipital-cervical-thoracicspine.Theloadsappliedtothespinalimplantassembliesinvivowill,ingeneral,differfromtheloadingconfigurationsusedinthesetestmethods.Theresultsobtainedherecannotbeuseddirectlytopredictinvivoperformance.Theresultscanbeusedtocomparedifferentcomponentdesignsintermsoftherelativemechanicalparameters.Fatiguetestinginasimulatedbodyfluidorsalinemaycausefretting,corrosion,orlubricatetheinterconnectionsandtherebyaffecttherelativeperformanceoftesteddevices.Thistestshouldbeinitiallyperformeddry(ambientroomconditions)forconsistency.Theeffectoftheenvironmentmaybesignificant.Repeatingallorpartofthesetestmethodsinsimulatedbodyfluid,saline(9gNaClper1000mLwater),asalinedrip,water,oralubricantshouldbeconsidered.Themaximumrecommendedfrequencyforthistypeofcyclictestingshouldbe5Hz.Thelocationofthelongitudinalelementsisdeterminedbytheintendedinvivolocationoftheanchors.Theperpendiculardistancetotheloaddirectionbetweentheaxisofahingepinandtheanchor''sattachmentpointstoapolyacetalblockisindependentofanchor-typeforthecervicalblock,butdependentonthedesignfortheoccipitaltestblock.Thedistancebetweenthepolyacetalblockandthecenterofthelongitudinalelementisafunctionofthedesignoftheimplant.1.1Thesetestmethodscoverthematerialsandmethodsforthestaticandfatiguetestingofoccipital-cervicalandoccipital-cervical-thoracicspinalimplantassembliesinavertebrectomymodel.Thetestmaterialsformostcombinationsofoccipital-cervicalandoccipital-cervical-thoracicspinalimplantcomponentscanbespecificdependingontheintendedlocationandintendedmethodofattachment.1.2Thesetestmethodsareintendedtoprovideabasisforthemechanicalcomparisonamongpast,present,andfutureoccipital-cervicalandoccipital-cervical-thoracicspinalimplantassemblies.Theyallowcomparisonofoccipital-cervicalandoccipital-cervical-thoracicspinalimplantconstructswithdifferentmethodsofapplicationtothespine.Thesetestmethodsarenotintendedtodefinelevelsofperformance,sincesufficientknowledgeisnotavailabletopredicttheconsequencesoftheuseofaparticulardevice.1.3Thesetestmethodssetoutguidelinesforloadtypesandmethodsofapplyingloads.Methodsforthreestaticloadtypesandtwofatiguetestsforthecomparativeevaluationofoccipital-cervicalandoccipital-cervical-thoracicspinalimplantassembliesaredefined.1.4Thesetestmethodsestablishguidelinesformeasuringdisplacements,determiningtheyieldload,andevaluatingthestiffnessandstrengthofoccipital-cervicaloroccipital-cervical-thoracicspinalimplantasse......
【中国标准分类号】:C45
【国际标准分类号】:11_040_40
【页数】:14P.;A4
【正文语种】:英语