ASTM D3163-2001(2008) 用抗拉荷载法在剪切胶粘剂粘接刚性塑料搭接接头的抗剪切强度的标准试验方法
时间:2024-05-14 13:35:03 来源: 标准资料网 作者：标准资料网 阅读：8913
【英文标准名称】:StandardTestMethodforDeterminingStrengthofAdhesivelyBondedRigidPlasticLap-ShearJointsinShearbyTensionLoading
【原文标准名称】:用抗拉荷载法在剪切胶粘剂粘接刚性塑料搭接接头的抗剪切强度的标准试验方法
【标准号】:ASTMD3163-2001(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【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】:D14.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:adhesivebonds;plastic;shearstrength;tension;Bondstrength--adhesives(plastic-to-plastic);Sheartesting--adhesives;Tensileproperties/testing--adhesivebonds;Adhesive-bondedplastics;Adhesivejoints;Lap-shearapplications/testing;Rigidplastic
【摘要】:Duetotheincreaseduseofadhesive-bondedplasticsasaresultoftheinherentadvantagesaffordedbybondedratherthanmechanicallyfastenedjoints,particularlythealleviationofstressraisersandstresscracking,thereisaneedforstandardtestsbywhichjointsofvariousplasticsubstratesandadhesivescanbecompared.Thistestmethodisintendedtomeetsuchaneed.Thistestmethodislimitedtotesttemperaturesbelowthesofteningpointofthesubjectadherends,andisnotintendedforuseonanisotropicadherendssuchasreinforcedplasticlaminates.Themisuseofstrengthvaluesobtainedfromthistestmethodasallowabledesign-stressvaluesforstructuraljointscouldleadtoproductfailure,propertydamage,andhumaninjury.Theapparentshearstrengthofanadhesiveobtainedfromagivensmallsingle-lapspecimenmaydifferfromthatobtainedfromajointmadewithdifferentadherendsorbyadifferentbondingprocess.Thenormalvariationoftemperatureandmoistureintheserviceenvironmentcausestheadherendsandtheadhesivetoswellandshrink.Theadherendsandadhesivearelikelytohavedifferentthermalandmoisturecoefficientsofexpansion.Eveninsmallspecimens,short-termenvironmentalchangescaninduceinternalstressesorchemicalchangesintheadhesivethatpermanentlyaffecttheapparentstrengthandothermechanicalpropertiesoftheadhesive.Theproblemofpredictingjointbehaviorinachangingenvironmentisevenmoredifficultifadifferenttypeofadherendisusedinalargerstructuraljointthanwasusedinthesmallspecimen.Theapparentshearstrengthmeasuredwithasingle-lapspecimenisnotsuitablefordeterminingallowabledesignstressesfordesigningstructuraljointsthatdifferinanymannerfromthejointstestedwithoutthoroughanalysisandunderstandingofthejointandadhesivebehaviors.Single-laptestsmaybeusedforcomparingandselectingadhesivesorbondingprocessesforsusceptibilitytofatigueandenvironmentalchanges,butsuchcomparisonsmustbemadewithgreatcautionsincedifferentadhesivesmayresponddifferentlyindifferentjoints.SeeGuideD4896forfurtherdiscussionoftheconceptsrelativetointerpretationofadhesivebondedsingle-lapjoints.1.1ThistestmethodisintendedtocomplementTestMethodD1002andextenditsapplicationtosingle-lapshearadhesivejointsofrigidplasticadherends.Thetestmethodisusefulforgeneratingcomparativeshearstrengthdataforjointsmadefromanumberofplastics.Itcanalsoprovideameansbywhichseveralplasticsurfacetreatmentscanbecompared.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:83_180
【页数】:3P.;A4
【正文语种】:英语
【英文标准名称】:Railsystemsforsupportingmedicalequipment
【原文标准名称】:支承医用设备的钢轨系统
【标准号】:BSEN12218-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-04-15
【实施或试行日期】:1999-04-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:设计;元部件;材料强度;尺寸公差;机械试验;作标记;定型试验;组件;兼容性;夹件;可混用性;报告;认可试验;夹件(机械);负荷;尺寸;医疗设备;互换性;性能;钢轨;使用说明;弯曲试验;扭矩;扭转试验;基座;夹持装置;水平的
【英文主题词】:
【摘要】:ThisEuropeanStandardspecifiesbasicrequirementswhichensurecompatibilitybetweenrailsystemscomplyingwiththisstandardandmedicalequipment,inordertopermittheinterchangeabilityofmedicalequipmentfromonerailsystemtoanother.Medicalequipmentcanbeattachedtoarailbyrailclampsdirectly,orviaothercomponentsofdimensionswhicharespecifiedinthisstandard.Railclampsarerequiredtobecompatiblewithrailswhicharewithinarangeofdimensionsspecifiedinthisstandard.Thespecificationsforrailsystemsincludedimensions,strengthandinformationtobesuppliedbythemanufacturer.Somemedicalequipmentcanbeattachedtotherailbymeanswhichareoutsidethescopeofthisstandard.Thisstandardonlyappliestorailsystemsintendedtobemountedhorizontally.Itspecifiesneitherthestructuresnorthetypesofmedicalequipmentthataretobesupported.Itdoesnotapplytooverheadrailsystemsforsupportingcurtainsandinfusiondevices.NOTEItisexpectedthatparticularstandardswillbepreparedtocoverapplicationsforwhichtherailsystemspecifiedinthisEuropeanStandardisunsuitable,andparticulardevicestandardswillspecifywhetherornottherailsystemspecifiedinthisstandardistobefittedtothedevice.
【中国标准分类号】:C30
【国际标准分类号】:11_040_99;11_140
【页数】:28P;A4
【正文语种】:英语
【英文标准名称】:Electricalapparatusforthedetectionandmeasurementofcombustibleortoxicgasesorvapoursorofoxygen-Requirementsonthefunctionalsafetyoffixedgasdetectionsystems
【原文标准名称】:易燃或有毒气体或蒸气或氧气的探测和测量用电气设备.混合气体探测系统的功能安全要求
【标准号】:BSEN50402-2005
【标准状态】:作废
【国别】:英国
【发布日期】:2005-12-30
【实施或试行日期】:2005-12-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:燃烧气体;浓缩;缺陷;失误误差;定义;检波器(回路);数字工程;电气设备;故障;失效率;功能效率;气体检测器;气体;测量;测量技术;氧;工作性能;安全要求;信号传输;SIL法;软件;规范(验收);固定的;试验;毒物;有毒气体;毒素;蒸气;警告装置
【英文主题词】:Burninggases;Concentration;Defects;Defectstolerances;Definition;Definitions;Detectors(circuits);Digitalengineering;Electricalappliances;Failure;Failurerates;Functionalefficiency;Gasdetectors;Gases;Measurement;Measuringtechniques;Oxygen;Performanceinservice;Safetyrequirements;Signaltransmission;SILmethods;Software;Specification(approval);Stationary;Testing;Toxic;Toxicgases;Toxins;Vapours;Warningdevices
【摘要】:ThisEuropeanStandardisapplicabletofixedgasdetectionsystemsforthedetectionandmeasurementofflammableortoxic1)gasesorvapoursoroxygen.ThisEuropeanStandardsupplementstherequirementsoftheEuropeanStandardsforelectricalapparatusforthedetectionandmeasurementofflammablegases,vapours(e.g.EN61779orEN50241),toxicgases(e.g.EN45544)oroxygen(e.g.EN50104).NOTE1TheseEuropeanStandardswillbementionedinthetextas"metrologicalstandards".NOTE2TheexamplesaboveshowthestateofthestandardisationforindustrialapplicationsatthetimeofpublishingthisEuropeanStandard.Theremaybeothermetrologicalstandardscoveringotherapplicationfields,forwhichthisstandardisalsoapplicable.NOTE3ForfixedapparatususedforsafetyapplicationswithaSILrequirementupto1andforportableapparatustheEuropeanStandardEN50271maybeappliedinsteadofthisEuropeanStandard.Applyingtheabovementionedmetrologicalstandardswillensurethemeasuringperformanceisadequateinnormaloperationofagasdetectionsystem.AdditionallytherequirementsofthisEuropeanStandardaddressthefunctionalsafetyofgasdetectionsystemsandencompasscriteriaforreliability,faulttoleranceandavoidanceofsystematicfaults.ThisEuropeanStandardwillleadtothecharacterisationofthegasdetectionsystembyaSIL-capabilityandrelatedhardwarefailureraterepresentingahierarchicalorderofsafetylevels.ThiswillallowtheusertoincorporatethegasdetectionsystemintoanoverallsafetysystemaccordingtothesafetyintegritylevelsofEN61508orthecategoriesofENISO13849-1(seeAnnexB).ThisEuropeanStandardisaproductstandardwhichisbasedonEN61508andincludesadditionalrequirementsofENISO13849-1.Itcoverspartofthephase9?realisation?oftheoverallsafetylifecycledefinedinEN61508-1.ThisEuropeanStandardisapplicableforgasdetectionsystems,whichmayconsistofthefollowingfunctionalunits:?gas-sampling;?sensor;?signaltransmission;?inputtocontrolunit;?signalprocessingincontrolunit;?outputfromcontrolunit.ThisEuropeanStandarddoesnotspecifyrequirementsfortheinstallationandmaintenanceofgasdetectionsystems.Italsodoesnotspecifythephysicalpositioningofsensors..ThisEuropeanStandarddoesnotspecifywhichSIL-capabilityissufficientforwhichapplication.NOTE4TheSIL-capabilityrequiredforanapplicationwillbespecifiedbytheuser(seeAnnexesAandB).
【中国标准分类号】:C81
【国际标准分类号】:13_320
【页数】:66P.;A4
【正文语种】:英语