JIS B1548-1995 滚动轴承.A加权声压级的测量方法
时间:2024-05-07 19:38:24 来源: 标准资料网 作者：标准资料网 阅读：9830
【英文标准名称】:Rollingbearings--MeasuringmethodsofA-weightedsoundpressurelevels
【原文标准名称】:滚动轴承.A加权声压级的测量方法
【标准号】:JISB1548-1995
【标准状态】:现行
【国别】:日本
【发布日期】:1995-02-01
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonMachineElements
【标准类型】:()
【标准水平】:()
【中文主题词】:声级计;径向轴承;滚柱轴承;滚珠轴承;声强
【英文主题词】:ballbearings;rollerbearings;radialbearings;soundintensity;sound-levelmeters
【摘要】:この規格は,転がり軸受()(以下,軸受という。)を回転させたときに発生する音の騒音レべルの測定方法について規定する。注()対象とする軸受は,深溝玉軸受,アンギュラ玉軸受及び円すいころ軸受とする。
【中国标准分类号】:J11
【国际标准分类号】:17_140_20;21_100_20
【页数】:8P;A4
【正文语种】:日语
【英文标准名称】:Anhydrousammoniaforindustrialuse;Evaluationofresidueonevaporation;Gravimetricmethod
【原文标准名称】:工业用无水氨蒸发后残渣的测定重量法
【标准号】:ISO4276-1978
【标准状态】:作废
【国别】:国际
【发布日期】:1978-04
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:分析;氨;连接;化学分析;含量测定;化学残余物;化合物;蒸发分析;化学分析和试验;重量分析
【英文主题词】:chemicalanalysisandtesting;analysis;ammonia;determinationofcontent;connections;gravimetricanalysis
【摘要】:Applicabletoproductshavingaresidueofequaltoormorethan0.02%(m/m).Forproductsobtainedinmodernplantsthisevaluationisnotusuallyrequired.Indicatestotheriskinhandlingwiththisproduct.Analysisbyevaporation,atambienttemperature,ofatestportionandweighingoftheresidue.Titrationoftheammoniacontainedintheresiduewithstandardvolumetricsulphuricacidsolutioninthepresenceofanindicator.Subtractionofthismassfromthatoftheredidue.Atypicalapparatusforthetestisshowninafigure.
【中国标准分类号】:G10
【国际标准分类号】:71_060_40
【页数】:3P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforAmountofMaterialinSoilsFinerthanNo.200(75-956;m)Sieve
【原文标准名称】:测定土壤中细于200号筛孔(75μm)的土壤总量的标准试验方法
【标准号】:ASTMD1140-2000(2006)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:D18.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:砌块;建筑;施工材料;含量测定;土工织物;材料数量;天然石料;岩石;筛选(大小);土壤;石;试验
【英文主题词】:fines;particlesizes;sieveanalysis;washing
【摘要】:Materialfinerthanthe75-x03BC;m(No.200)sievecanbeseparatedfromlargerparticlesmuchmoreefficientlyandcompletelybywetsievingthanwithdrysieving.Therefore,whenaccuratedeterminationsofmaterialfinerthan75-x03BC;msieveinsoilaredesired,thistestmethodisusedonthetestspecimenpriortodrysieving.Usuallytheadditionalamountofmaterialfinerthan75-x03BC;msieveobtainedinthedrysievingprocessisasmallamount.Ifitislarge,theefficiencyofthewashingoperationshouldbechecked,asitcouldbeanindicationofdegradationofthesoil.Withsomesoils,particularlyclayeysoils,inordertokeepthefinermaterialfromadheringtothelargerparticles,itwillbenecessarytosoakthesoilpriortowashingitthroughthesieve.Adeflocculatingagent(dispersingagent)shouldbeaddedtothesoilwhenitissoaked.Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thesetestmethodscoverdeterminationoftheamountofmaterialfinerthana75-m(No.200)sievebywashing.1.2TwomethodsfordeterminingtheamountofmaterialfinerthantheNo.200sieveareprovided.Themethodtobeusedshallbespecifiedbytherequestingauthority.Ifnomethodisspecified,thechoiceshouldbebasedontheguidancegivenin4.2and7.31.2.1MethodA-Testspecimenisnotdispersedpriortowashsieving.1.2.2MethodB-Testspecimenisdispersedbysoakinginwatercontainingadeflocculatingagentpriortowashsieving.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B10
【国际标准分类号】:19_120
【页数】:4P.;A4
【正文语种】: