ASTM G32-2009 使用振动装置对气蚀侵蚀的试验方法
时间:2024-05-14 01:19:05 来源: 标准资料网 作者：标准资料网 阅读：8710
【英文标准名称】:StandardTestMethodforCavitationErosionUsingVibratoryApparatus
【原文标准名称】:使用振动装置对气蚀侵蚀的试验方法
【标准号】:ASTMG32-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:G02.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cavitation;cavitationerosion;erosionbyliquids;erosion-corrosion;erosionofsolids;erosionresistance;erosiontest;vibratorycavitation;Cavitationerosion/corrosion;Corrosion--cavitationerosion/corrosion;Dieselenginecylinderliners;Dynamom
【摘要】:Thistestmethodmaybeusedtoestimatetherelativeresistanceofmaterialstocavitationerosionasmaybeencountered,forinstance,inpumps,hydraulicturbines,hydraulicdynamometers,valves,bearings,dieselenginecylinderliners,shippropellers,hydrofoils,andininternalflowpassageswithobstructions.AnalternativemethodforsimilarpurposesisTestMethodG134,whichemploysacavitatingliquidjettoproduceerosiononastationaryspecimen.Thelattermaybemoresuitableformaterialsnotreadilyformedintoapreciselyshapedspecimen.Theresultsofeither,orany,cavitationerosiontestshouldbeusedwithcaution;see5.8.Someinvestigatorshavealsousedthistestmethodasascreeningtestformaterialssubjectedtoliquidimpingementerosionasencountered,forinstance,inlow-pressuresteamturbinesandinaircraft,missilesorspacecraftflyingthroughrainstorms.PracticeG73describesanothertestingapproachspecificallyintendedforthattypeofenvironment.Thistestmethodisnotrecommendedforevaluatingelastomericorcompliantcoatings,someofwhichhavebeensuccessfullyusedforprotectionagainstcavitationorliquidimpingementofmoderateintensity.Thisisbecausethecomplianceofthecoatingonthespecimenmayreducetheseverityoftheliquidcavitationinducedbyitsvibratorymotion.Theresultwouldnotberepresentativeofafieldapplication,wherethehydrodynamicgenerationofcavitationisindependentofthecoating.Note18212;Analternativeapproachthatusesthesamebasicapparatus,andisdeemedsuitableforcompliantcoatings,isthex201C;stationaryspecimenx201D;method.Inthatmethod,thespecimenisfixedwithintheliquidcontainer,andthevibratingtipofthehornisplacedincloseproximitytoit.Thecavitationx201C;bubblesx201D;inducedbythehorn(usuallyfittedwithahighlyresistantreplaceabletip)actonthespecimen.Whileseveralinvestigatorshaveusedthisapproach(seeX3.2.3),theyhavedifferedwithregardtostandoffdistancesandotherarrangements.Thestationaryspecimenapproachcanalsobeusedforbrittlematerialswhichcannotbeformedintoathreadedspecimennorintoadiscthatcanbecementedtoathreadedspecimen,asrequiredforthistestmethod(see7.6).Thistestmethodshouldnotbedirectlyusedtorankmaterialsforapplicationswhereelectrochemicalcorrosionorsolidparticleimpingementplaysamajorrole.However,adaptationsofthebasicmethodandapparatushavebeenusedforsuchpurposes(see9.2.5,9.2.6,andX3.2).GuideG119maybefollowedinordertodeterminethesynergismbetweenthemechanicalandelectrochemicaleffects.Thosewhoareengagedinbasicresearch,orconcernedwithveryspecializedapplications,mayneedtovarysomeofthetestparameterstosuittheirpurposes.However,adherencetothistestmethodinallotherrespectswillpermitabetterunderstandingandcorrelationbetweentheresultsofdifferentinvestigators.Becauseofthenonlinearnatureoftheerosion-versus-timecurveincavitationandliquidimpingementerosion,theshapeofthatcurvemustbeconsideredinmakingcomparisonsanddrawingconclusions.SeeSection11.Theresultsofthistestmaybesignificantlyaffectedbythespecimenx2019;ssurfacepreparation.Thismustbeconsideredinplanning,conductingandreportingatestprogram.Seealso7.4and12.2.Themechanismsofcavitationerosionandliquidimpingementerosionarenotfullyunderstoodandmaydiffer,dependingonthedetailednature,scale,andinte............
【中国标准分类号】:H25
【国际标准分类号】:77_060
【页数】:16P.;A4
【正文语种】:英语
【英文标准名称】:Suspendedceilings-Requirementsandtestmethods
【原文标准名称】:吊顶.要求和试验方法
【标准号】:BSEN13964-2004+A1-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2004-08-23
【实施或试行日期】:2004-08-23
【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】:空气隔声;锚具;装配工具箱;装配成套材料;弯曲拉伸强度;建筑物;CE标记;顶棚衬垫;顶棚;合格;建筑;装配产品;防腐蚀;覆盖路径;定义;挠曲;设计;尺寸;耐久性;电气安全;评定;紧固件;耐火性;适用性;固定件;甲醛;钉板条;悬挂工具;夹持装置;室内;荷载能力;荷载因素;作标记;安装;安装细则;建筑构件;预制的;产品信息;性能;防失效安全;吸声;隔音;规范(验收);稳定性;材料强度;应力;支撑件;火焰表面传播;吊顶;测试;导热性;厚墙;薄壁;公差(测量);天花板底衬;验证;风荷载;木材防腐
【英文主题词】:Airbornesoundinsulation;Anchorages;Assemblingkits;Bendingtensilestrength;Buildings;CEmarking;Ceilinglinings;Ceilings;Conformity;Construction;Constructionalproducts;Corrosionprotection;Coverpass;Definition;Definitions;Deflection;Design;Dimensions;Durability;Electricalsafety;Evaluations;Fasteners;Fireresistance;Fitnessforpurpose;Fixings;Formaldehyde;Furrings;Hanger;Holdings;Indoors;Loadcapacity;Loadfactor;Marking;Mounting;Mountinginstructions;Partofbuildings;Prefabricated;Productinformation;Properties;Safetyagainstfailure;Soundabsorption;Soundinsulation;Specification(approval);Stability;Strengthofmaterials;Stress;Supportmembers;Surfacespreadofflame;Suspendedceilings;Testing;Thermalconductivity;Thick-walled;Thin-walled;Tolerances(measurement);Underceilings;Verification;Windloading;Woodpreservation
【摘要】:ThisEuropeanStandardcoversmembranes,individualsubstructurecomponents,substructurekitsandsuspendedceilingkitswhentheseareplacedonthemarket.ThisEuropeanStandardalsogivescertainspecificationsfortheinstalledsuspendedceilingsystem,fortworeasons:theindividualcomponentsandkitsmayhavetomeetcertainrequirementsinorderfortheinstalledsystemtobeabletomeettherequirementwhenthesystemisinstalled,andbecauseitisappropriate,foreaseofreference,togivebothcomponent/kitrequirementandinstalledsystemrequirementinthesamedocument,giventherelationshipbetweenthem.ThisEuropeanStandardprovidesinformationforthevariouspartiesresponsiblefordesigning,manufacturingandspecifying/selectingsuspendedceilingsusedforinteriorapplicationsingeneralbuildingandcivilengineeringstructures.Itcoverssuspendedceilingssoldasacompletekit,substructuressoldaskits,individualcomponents(products)ofsuchsubstructures,andmembranecomponents.Itincludestestmethodsandmethodsofassessment,aswellasprovisionsfortheevaluationofconformityoftheproductstotherequirementsofthisEuropeanStandard.IntheabsenceofanyotherEuropeanStandard,thisEuropeanStandardspecifiesdimensions,tolerancesand,whererelevant,performancerequirements,forcommonlyavailableceilingsubstructuresandmembranecomponents.ThisEuropeanStandarddoesnotcoverthefollowing:-ceilingsubstructuresandmembranecomponentcoveredbyotherharmonisedEuropeanStandards,forinsituformedceilings,coveredbyotherEuropeantechnicalspecifications,forwhichitistheinstaller,notthecomponentmanufacturer,whotakesresponsibilityforensuringthatthecompleteinstalledsuspendedceilingmeetsanyregulatoryrequirementstowhichitissubject;-stretchedceilingscoveredbyEN14716;-ceilingsinmobilebuildings,caravansandotherformsoftransportation;-characteristicsneededforspecialapplications,forwhichadditionalcharacteristicsotherthancoveredbythisEuropeanStandardwouldneedtobecompliedwith;-ceilingssubjecttowaterpenetrationrequirements;-ceilingsusedexternallywhererequirementsotherthancoveredbythisscopewouldapply(tunnels,canopies,petrolstations,arcades,opensportsfacilities,carparksetc.);-heavydutysuspendedceilingsortheirsupportingconstruction(e.g.ceilingsthatcanbewalkedon);-ceilingsmadefromfireprotectiveboardscoveredbyETAG018-4.ThisEuropeanStandardscoversthefollowingessentialcharacteristics:-reactiontofire;-resistancetofire(suspendedceilingkitsonly);-releaseofasbestos(content)(suspendedceilingkitsandmembranecomponentsonly);-releaseofformaldehyde(suspendedceilingkitsandmembranecomponentsonly);-shatterproperties(formembranecomponentsofbrittlematerialsinsuspendedceilingkitsonly);-flexuraltensilestrength;-loadbearingcapacity;-electricalsafety;-directairbornesoundinsulation(suspendedceilingkitsonly);-soundabsorption(suspendedceilingkitsandmembranecomponentsonly);-thermalconductivity(suspendedceilingkitsandmembranecomponentsonly);-durabilityofflexuraltensilestrengthandloadbearingcapacityagainstmoisture;-condensation.ThisEuropeanStandardalsocoversthefollowingnon-essentialrequirements:-colourandlightreflectance;-installation.
【中国标准分类号】:P32
【国际标准分类号】:
【页数】:84P.;A4
【正文语种】:英语
【英文标准名称】:Copperandcopperalloys-Copperprofilesandprofiledwireforelectricalpurposes
【原文标准名称】:铜和铜合金.电气用铜型材和成型的铜丝材
【标准号】:BSEN13605-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-09-25
【实施或试行日期】:2002-09-25
【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】:电气工程;测试;机械性能;定义;规范(验收);合格;特性;材料;尺寸;组分;材料制定;铜合金;外形;极限尺寸;对照表;顺序示度;形状公差;电性能;铜;铜线
【英文主题词】:Composition;Conformity;Copper;Copperalloys;Copperwires;Definition;Definitions;Dimensions;Electricalengineering;Electricalproperties;Equivalentlists;Formtolerances;Limitdimensions;Materialdesignations;Materials;Mechanicalproperties;Orderindications;Profile;Profiled;Properties;Specification(approval);Testing
【摘要】:ThisEuropeanStandardspecifiesthecomposition,propertyrequirementsincludingelectricalproperties,andtolerancesondimensionsandformforcopperprofilesandprofiledwireforelectricalpurposeswhichwouldfitwithinacircumscribingcircleofmaximum180mmdiameter.Thesamplingprocedures,themethodsoftestforverificationofconformitytotherequirementsofthisstandard,andthedeliveryconditionsarealsospecified.
【中国标准分类号】:H62
【国际标准分类号】:77_150_30
【页数】:30P.;A4
【正文语种】:英语