【英文标准名称】:StandardTestMethodforShearTestingofBulkSolidsUsingtheJenikeShearCell
【原文标准名称】:用Jenike剪切室行散装固体剪切试验的标准试验方法
【标准号】:ASTMD6128-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D18.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:墙壁摩擦角;体积密度;摩擦;粉末;剪切试验
【英文主题词】:bulksolid;cohesivestrength;effectiveangleoffriction;effectiveyieldlocus;flowfunction;internalfrictionangle;Jenikeshearcell;kinematicwallfrictionangle;powder;translationalsheartester;unconfinedyieldstrength;wallfriction
【摘要】:Reliable,controlledflowofbulksolidsfrombinsandhoppersisessentialinalmosteveryindustrialfacility.Unfortunately,flowstoppagesduetoarchingandratholingarecommon.Additionalproblemsincludeuncontrolledflow(flooding)ofpowders,segregationofparticlemixtures,useablecapacitywhichissignificantlylessthandesigncapacity,cakingandspoilageofbulksolidsinstagnantzones,andstructuralfailures.Bymeasuringtheflowpropertiesofbulksolids,anddesigningbinsandhoppersbasedontheseflowproperties,mostflowproblemscanbepreventedoreliminated.Forbulksolidswithasignificantpercentageofparticles(typically,onethirdormore)finerthanabout6mm(x00BC;in.),thecohesivestrengthisgovernedbythefines(-6-mmfraction).Forsuchbulksolids,cohesivestrengthandwallfrictiontestsmaybeperformedonthefinefractiononly.Note18212;Thequalityoftheresultproducedbythistestmethodisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthistestmethodarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.PracticeD3740wasdevelopedforagenciesengagedinthetestingand/orinspectionofsoilandrock.Assuchitisnottotallyapplicabletoagenciesperformingthistestmethod.However,usersofthistestmethodshouldrecognizethattheframeworkofPracticeD3740isappropriateforevaluatingthequalityofanagencyperformingthistestmethod.Currentlythereisnoknownqualifyingnationalauthoritythatinspectsagenciesthatperformthistestmethod.1.1Thismethodcoverstheapparatusandproceduresformeasuringthecohesivestrengthofbulksolidsduringbothcontinuousflowandafterstorageatrest.Inaddition,measurementsofinternalfriction,bulkdensity,andwallfrictiononvariouswallsurfacesareincluded.1.2Thisstandardisnotapplicabletotestingbulksolidsthatdonotreachthesteadystaterequirementwithinthetravellimitoftheshearcell.Itisimpossibletoclassifyaheadoftimewhichbulksolidscannotbetested,butoneexamplemaybethoseconsistingofhighlyelasticparticles.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.1.4Themostcommonuseofthisinformationisinthedesignofstoragebinsandhopperstopreventflowstoppagesduetoarchingandratholing,includingtheslopeandsmoothnessofhopperwallstoprovidemassflow.Parametersforstructuraldesignofsuchequipmentalsomaybederivedfromthisdata.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:19_060
【页数】:20P.;A4
【正文语种】:


Product Code:SAE AS4041
Title:Air Mode General Purpose Containers
Issuing Committee:Age-2a Cargo Handling Committee
Scope: This SAE Aerospace Standard (AS) establishes the basic requirements for the design, construction and testing of air mode 2.44 m x 2.44 (8 ft X 8 ft) cross-section containers. These containers are to be used exclusively in conjunction with the air mode in freighter versions of wide-body commercial transport aircraft. Air mode containers will normally be on aircraft roller conveying systems and/or on similarly equipped ancillary ground handling devices. Similar requirements for air/surface (intermodal) containers are provided in AS832.