【英文标准名称】:Plainwashers
【原文标准名称】:平垫圈
【标准号】:JISB1256-2008
【标准状态】:现行
【国别】:日本
【发布日期】:2008-03-20
【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】:
【英文主题词】:
【摘要】:ThisStandardspecifiesthecircularplainwashers(hereafterreferredtoas"plainwashers")madeofsteelandstainlesssteelusedforbolts,screwsandnutsofgeneraluse.WhenrequiringthedimensionsofwashersotherthanthosespecifiedinthetextofthisStandard,thereferencedimensionsshouldbeselectedfromthoseinJISB1250andthetolerancesshouldbeselectedfromthoseinJISB1022.TheshapeanddimensionsofsquarewasherisshowninAnnexJAasreference.NOTE:TheInternationalStandardscorrespondingtothisStandardareasfol-lows.ISO7089:2000Plainwashers-Normalseries-ProductgradeAISO7090:2000Plainwashers,chamfered-Normalseries--ProductgradeAISO7091:2000Plainwashers-Normalseries--ProductgradeCISO7092:2000Plainwashers-Sma]]series-ProductgradeAISO7093-1:2000Plainwashers-Largeseries-PartI:ProductgradeAISO7093-2:2000Plainwashers--Largeseries--Part2.'ProductgradeUISO7094:2000Plainwashers-Extralargeseries-ProductgradeU(Overallevaluation:MOD)Inaddition,symbolswhichdenotethedegreeofcorrespondenceinthecontentsbetweentherelevantInternationalStandardsandJISareIDT(identical).MOD(modified),andNEQ(notequivalent)accordingtoISO/IECGuide21.
【中国标准分类号】:J13
【国际标准分类号】:21_060_30
【页数】:32P;A4
【正文语种】:日语


【英文标准名称】:StandardPracticeforTestingForcedEntry,BallisticandLowImpactResistanceofSecurityFenceSystems
【原文标准名称】:对安全防卫系统进行抗强行进入、子弹和低强度冲击试验的标准实施规程
【标准号】:ASTMF2781-2010
【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】:F14.50
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thesuccessorfailureofanyattempttoforcefullypenetrateafencesystemisdependentuponthreeprimaryfactorsthatcollectivelydefinethethreatthetoolsanddevicesemployed,thenumberofaggressors,andtheirlevelofsophistication.Normally,atestprocedureofthisscopewouldbesupportedbyyearsoflaboratorytestingintendedtoqualifyandaccuratelyreproducethedestructiveeffectsofavarietyoftools,implements,anddevices.However,rapidlychangingsocialconditionshavecreatedanimmediateneedforbuildingcomponentsresistanttoevolvingforcedentrytechniques.Accordingly,theprocedurespresentedhereinarebasedmoreonfieldexperiencethanlaboratoryanalysis.Theyaremorerepresentativethaninclusive,areintendedtoprovideabasisforthecomparativeevaluationofdifferentfencesystemsusingforcedpenetrationprocedures,ballistictestsandimpacttesting,andarenotprimarilyintendedtobeusedtoestablishorconfirmtheabsolutepreventionofforcedentries.1.1TheforcedentryresistanceoffencesystemsisevaluatedrelativetothreelevelsofforcedentrythreatusingthelimitedhandtoolinventoryoutlinedinTable1.Italsoestablishesasystemforratingtheforcedentryresistanceofthosesystems(seeTable2).Thetoolsspecifiedtobeusedfortestingateachthreatlevelarethosethatareknowntohaveamaximumdestructiveeffectonstructuresandtheirsub-assembliesandarereadilyavailabletoaggressorscategorizedasposingthatlevelofthreat.1.1.1LowThreatLevel(L)8212;Specificallyexemptedfromtheinventoryofavailabletoolsforthelow(L)threatlevelcategoryarepowertools(gasoline,electricorhydraulic),anddevicesrequiringmorethanonepersontotransportandoperate.1.1.2MediumThreatLevel(M)8212;Specificallyexemptedfromtheinventoryofavailabletoolsforthemedium(M)threatlevelcategoryarepowertoolsrequiringanoutsidepowersourceorselfcontainedgasolineorbatterydriventoolsanddevicesrequiringmorethantwopersonstotransportandoperate.1.1.3AggressiveThreatLevel(A)8212;Specificallyexemptedfromtheinventoryofavailabletoolsforthehigh(H)threatlevelcategoryaredevicesrequiringmorethantwopersonstotransportandoperate.1.2TheabilityofafencesystemtoofferprotectionfrombulletsfiredfromarifleorhandgunwouldbebeneficialparticularlyinBorderFenceareaswheresecuritypersonnelcanbetargetsduringpatrolactivities.Accordingly,alimitedtestusinga.38Specialhandgunanda7.62-mmrifleisperformedtodetermineifanylevelofprotectionisprovidedbythefencesystem.1.3Theabilityofafencesystemtoprovideimpactresistancefroma4000poundmassvehiclemovingatavelocityof20MPHatamodestcostwillproviderelativeguidanceastothestrengthofasecurityfencesysteminresistinglowimpactsituations.
【中国标准分类号】:A91
【国际标准分类号】:13_310
【页数】:10P.;A4
【正文语种】:英语