【英文标准名称】:StandardPracticeforCharacterizingAcousticEmissionInstrumentation
【原文标准名称】:声发射仪器特征表示标准实施规程
【标准号】:ASTME750-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:E07.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:acousticemission;AE;dead-time;gain;preamplifier;sensitivity;sensor;signalprocessor;threshold;Acousticemission(AE)testing;Calibration--acousticemissionanalysisinstrumentation;Welding/welds(nondestructivetesting)
【摘要】:ThispracticeprovidesinformationnecessarytodocumenttheaccuracyandperformanceofanAcousticEmissionsystem.Thisinformationisusefulforreferencepurposestoassurethattheinstrumentationperformanceremainsconsistentwithtimeanduse,andprovidestheinformationneededtoadjustthesystemtomaintainitsconsistency.Themethodssetforthinthispracticearenotintendedtobeeitherexclusiveorexhaustive.Difficultorquestionableinstrumentationmeasurementsshouldbereferredtoelectronicsengineeringpersonnel.Itisrecommendedthatpersonnelresponsibleforcarryingoutinstrumentmeasurementsusingthispracticeshouldbeexperiencedininstrumentationmeasurements,aswellasalltherequiredtestequipmentbeingusedtomakethemeasurements.1.1Thispracticeisrecommendedforuseintestingandmeasuringoperatingcharacteristicsofacousticemissionelectroniccomponentsorunits.(SeeAppendixX1foradescriptionofcomponentsandunits.)Itisnotintendedthatthispracticebeusedforroutinechecksofacousticemissioninstrumentation,butratherforperiodicevaluationorintheeventofamalfunction.Thesensorisnotaddressedinthisdocumentotherthansuggestingmethodsforstandardizingsystemgains(equalizingthemchanneltochannel)whensensorsarepresent.1.2Wherethemanufacturerprovidestestingandmeasuringdetailsinanoperatingandmaintenancemanual,themanufacturer''smethodsshouldbeusedinconjunctionwiththemethodsdescribedinthispractice.1.3Themethods(techniques)usedfortestingandmeasuringthecomponentsorunitsofacousticemissioninstrumentation,andtheresultsofsuchtestingandmeasuringshouldbedocumented.Documentationshouldconsistofphotographs,screenshots,chartsorgraphs,calculations,andtabulationswhereapplicable.1.4AEsystemsthatusecomputerstocontrolthecollection,storage,display,anddataanalysis,mightincludewaveformcollectionaswellasawideselectionofmeasurementparameters(features)relatingtotheAEsignal.Themanufacturerprovidesaspecificationforeachsystemthatspecifiestheoperatingrangeandconditionsforthesystem.Allcalibrationandacceptancetestingofcomputer-basedAEsystemsmustusethemanufacturer''sspecificationasaguide.Thispracticedoesnotcovertestingofthecomputerorcomputerperipherals.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N65
【国际标准分类号】:17_140_20
【页数】:10P.;A4
【正文语种】:英语


【英文标准名称】:Specificationforperformancerequirementsandtestsforofficefurniture-Officepedestalseatingforusebypersonsweighingupto150kgandforuseupto24hoursaday,includingtype-approvaltestsforindividualcomponents
【原文标准名称】:办公家具性能要求和试验规范.体重在150kg以下人员每天使用时间小于24小时的办公室支架座椅并包括单个部件类型的验收试验
【标准号】:BS5459-2-2000+A2-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2000-11-15
【实施或试行日期】:2000-11-15
【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】:可调家具;认可试验;椅子;家具;职业安全;办公室设备;办公家具;性能;性能测试;座椅;稳定性;定型测试
【英文主题词】:Adjustablefurniture;Approvaltesting;Chairs;Furniture;Occupationalsafety;Officeequipment;Officefurniture;Performance;Performancetesting;Seating;Stability;Typetesting
【摘要】:ThispartofBS5459specifiesperformancerequirementsandtestmethodsforthestructuralsafetyandstabilityofofficepedestalseatingwhenusedbypersonsweighingupto150kg,orwhenusedforupto24hoursaday,includingchairsforusewithtablesanddeskshigherthanthosespecifiedinBSEN527-1.ThisPartofBS5459alsospecifiesrequirementsandtestmethodsfortypeapprovalofbases,columns,seatactions,backstemsandlockingdevices.NOTE1BSEN1335-2andBSEN1335-3containrequirementsandtestmethodsforofficepedestalseatingwhichisintendedforuseforupto8hoursadaybypersonsweighingupto110kg.Thisstandarddoesnotapplytoofficevisitors'chairs.NOTE2Officevisitors'chairsarechairsusedintheofficeenvironmentwhicharenotclassedasofficeworkchairsandwhichareusedforlongorshortmeetingsorconsultations,aswellasforreading,writing,listeningandwaiting.
【中国标准分类号】:Y81
【国际标准分类号】:13_180;97_140
【页数】:46P.;A4
【正文语种】:英语