作者:标准资料网 时间:2024-05-23 13:26:58   浏览:9052   来源:标准资料网

【英文标准名称】:StandardPracticeforVerifyingtheConsistencyofAE-SensorResponseUsinganAcrylicRod
【原文标准名称】:丙烯酸棒测定声发射传感器响应一致性的标准实施规程
【标准号】:ASTME2075/E2075M-2010
【标准状态】:现行
【国别】:
【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】:声发射传感器;传感器检查;传感器一致性检查;传感器响应;传感器试验;传感器校准;声发射测试;丙烯酸传感器棒;一致性;
【英文主题词】:acousticemissionsensors;AE;sensorcheck;sensorconsistencycheck;sensorresponse;sensortest;sensorverification;Acousticemission(AE)testing;Acrylicsensorrod;Consistency
【摘要】:Degradationinsensorperformancecanoccurduetodropping,mechanicalshockwhilemountedontheteststructure,temperaturecycles,andsoforth.Itisnecessaryanddesirabletohaveasimplemeasurementprocedurethatwillchecktheconsistencyofsensorresponse,whileholdingallothervariablesconstant.Whiletestblocksofmanydifferentkindshavebeenusedforthispurposeformanyyears,anacrylicpolymerrodoffersthebestall-aroundcombinationofsuitableacousticproperties,practicalconvenience,easeofprocurementandlowcost.Becausetheacousticpropertiesoftheacrylicrodareknowntodependontemperature,thispracticerequiresthattherod,sensors,andcouplantbestabilizedatthesameworkingtemperature,priortoverifyingthesensors.Attentionshouldbepaidtostorageconditionsfortheacrylicpolymerrod.Forexample,itshouldnotbeleftinafreezingorhotenvironmentovernight,unlessitisgiventimefortemperaturestabilizationbeforeuse.Properlyappliedandwithproperrecordkeeping,thispracticecanbeusedinmanyways.Theuserorganizationmustdeterminethecontextforitsuse,theacceptancestandardsandtheactionstobetakenbasedontheleadbreakresults.Thefollowingusesaresuggested:Todeterminewhenasensorisnolongersuitableforuse.Tochecksensorsthathavebeenexposedtohigh-riskconditions,suchasdropping,overheating,andsoforth.Togetanearlywarningofsensordegradationovertime.Thiscanleadtoidentifyingconditionsofuse,whicharedamagingsensors,andthus,tobetterequipmentcareandlowerreplacementcosts.Toobtainmatchedsetsofsensors,preamplifiers,instrumentationchannels,oracombinationthereof,formoreuniformperformanceofthetotalsystem.Tosavetimeandmoney,byeliminatingtheinstallationofbadsensors.Toverifysensorsquicklybutconsistentlyinthefieldandtoassisttrouble-shootingwhenachanneldoesnotpassaperformancecheck.Alltheaboveusesarerecommendedforconsideration.Thepurposeofthispracticeisnottocallouthowtheseusesaretobeimplemented,butonlytostatehowthetestitselfistobeperformedsothattheresultsobtainedwillbeaccurateandreliable.1.1Thispracticeisusedforroutinelycheckingthesensitivityofacousticemission(AE)sensors.Itisintendedtoprovideareliable,preciselyspecifiedwayofcomparingasetofsensors,ortellingwhetheranindividualsensor''ssensitivityhasdegradedduringitsservicelife,orboth.1.2Thispracticeisnotax201C;calibrationx201D;nordoesitgivefrequencyresponseinformation.1.3Units8212;ThevaluesstatedinSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:L31
【国际标准分类号】:19_100
【页数】:4P.;A4
【正文语种】: