【英文标准名称】:StandardTestMethodforWaterMassperUnitVolumeofSoilandRockIn-PlacebytheNeutronDepthProbeMethod
【原文标准名称】:用中子深探针法对地表土壤和岩石中单位体积含水量的标准试验方法
【标准号】:ASTMD5220-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D18.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:depthprobe;in-placewatercontent;insituwatercontent;neutronprobe;nuclearmethods;watermassperunitvolume;Calibration--soil/rockanalysisinstrumentation;Depthprofiling;Massperunitvolume;Neutronradiation--soil;Nondestructiveevalua
【摘要】:Thistestmethodisusefulasarapid,nondestructivetechniqueforthecalculationofthein-placewatermassperunitvolumeofsoilandrockatdesireddepthsbelowthesurface.Thistestmethodisusefulforinformationalandresearchpurposes.ItshouldonlybeusedforqualitycontrolandacceptancetestingwhencorrelatedtoactualwatermassperunitvolumeusingproceduresandmethodsdescribedinA1.2.3.Thenon-destructivenatureofthistestmethodallowsrepetitivemeasurementstobemadeatasingletestlocationforstatisticalanalysisandtomonitorchangesovertime.ThefundamentalassumptionsinherentinthistestmethodarethatthematerialundertestishomogeneousandhydrogenpresentisintheformofwaterasdefinedbyTestMethodD2216.Note18212;Thequalityoftheresultproducedbythisstandardtestmethodisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection,andthelike.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoversthecalculationofthewatermassperunitvolumeofsoilandrockbythermalizationorslowingoffastneutronswheretheneutronsourceandthethermalneutrondetectorareplacedatthedesireddepthintheboredholelinedbyanaccesstube(seeNote3).1.1.1ForlimitationsseeSection6onInterferences.1.2Thewatermassperunitvolume,expressedasmassperunitvolumeofthematerialundertest,iscalculatedbycomparingthethermalneutroncountratewithpreviouslyestablishedcalibrationdata(seeAnnexA1).1.3Aprecisionstatementhasnotbeendevelopedforthisstandardatthistime.Therefore,thisstandardshouldnotbeusedforacceptanceorrejectionofamaterialforpurchasingpurposesunlesscorrelatedtootheracceptedASTMmethods.1.4ThevaluesexpressedinSIunitsareregardedasthestandard.Theinch-poundunitsgiveninparenthesesmaybeapproximateandareprovidedforinformationonly.1.5AllobservedandcalculatedvaluesshallconformtotheguideforsignificantdigitsandroundingestablishedinPracticeD6026.1.5.1Theproceduresusedtospecifyhowdataarecollected,recorded,andcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatshouldgenerallyberetained.Theproceduresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsiderationsfortheuserx2019;sobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthisstandardtoconsidersignificantdigitsusedinanalysismethodsforengineeringdesign.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardsaregiveninSection8.
【中国标准分类号】:P13
【国际标准分类号】:13_080_40
【页数】:7P.;A4
【正文语种】:英语


Product Code:SAE J2277
Title:Shot Peening Coverage
Issuing Committee:Surface Enhancement Committee
Scope:This SAE Recommended Practice provides procedures for determining shot peening coverage.Effectiveness of shot peening is directly dependent on coverage. Inadequate or excessive coverage may be detrimental to fatigue.