【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

标准名称：	种鸡场生产技术规范
替代情况：	替代DB45/T 21-2000
发布日期：	2008-09-01
实施日期：	2008-11-28
首发日期：
作废日期：
主管部门：	广西壮族自治区质量技术监督局
出版社：	中国标准出版社
出版日期：	2008-11-28

没有内容

没有内容

没有内容

没有内容