HB 4250-1989 安装钢丝螺套通孔用带后引导的长柄机、手用丝锥 普通钢用 ＳＴ６×１~ＳＴ８×1.25
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来源:标准资料网
基本信息
| 标准名称： | 安装钢丝螺套通孔用带后引导的长柄机、手用丝锥 普通钢用 ＳＴ６×１~ＳＴ８×1.25 |
| 中标分类： |
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| 替代情况： | 被HB 4236-2004代替 |
| 发布日期： | 1989-05-13 |
| 实施日期： | 1989-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 2004-12-01 |
| 出版日期： | 1900-01-01 |
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所属分类：
【英文标准名称】:Informationtechnology--OpenSystemsInterconnection--Systemsmanagementoverview
【原文标准名称】:信息技术.开放系统互连.系统管理概述
【标准号】:JISX5763-1994
【标准状态】:作废
【国别】:日本
【发布日期】:1994-03-01
【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】:TechnicalCommitteeonInformationTechnology
【标准类型】:()
【标准水平】:()
【中文主题词】:信息论;管理;开放系统互连;信息传递;计算机应用
【英文主题词】:informationtheory;informationtransfer;opensystemsinterconnection;management;computerapplications
【摘要】:この規格は,次の事項を定める。
【中国标准分类号】:L79
【国际标准分类号】:35_100_70
【页数】:28P;A4
【正文语种】:日语
【英文标准名称】:StandardTestMethodforTearResistance(GravesTear)ofPlasticFilmandSheeting
【原文标准名称】:塑料薄膜和薄板的抗撕裂强度的标准试验方法
【标准号】:ASTMD1004-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D20.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Graves;plasticfilm;tear;tearinitiation;thinsheeting;Gravestear;Plasticsheetandfilm--tearresistance;Tearresistance;Thinsheeting
【摘要】:Tearresistanceofplasticfilmorsheetingisacomplexfunctionofitsultimateresistancetorupture.Thespecimengeometryandspeedoftestinginthistestmethodarecontrolledtoproducetearinginasmallareaofstressconcentrationatratesfarbelowthoseusuallyencounteredinservice.Experiencehasshownthetesttohaveitsbestreliabilityformaterialswhichdonothavebrittlefailureordonotelongategreaterthantwohundredpercentduringtesting.Thedatafromthistestmethodfurnishcomparativeinformationforrankingthetearingresistanceofplasticspecimensofsimilarcomposition.Actualuseperformanceintearingofsomeplasticsmaynotnecessarilycorrelatewithdatafromthistestmethod.Theresistancetotearofplasticfilmandsheeting,whilepartlydependentuponthickness,hasnosimplecorrelationwithspecimenthickness.Hence,tearingforcesmeasuredinnewtons(orpounds-force)cannotbenormalizedoverawiderangeofspecimenthicknesswithoutproducingmisleadingdataastotheactualtearingresistanceofthematerial.Datafromthistestmethodarecomparableonlyfromspecimens,whichvarybynomorethanx00B1;10%fromthenominaloraveragethicknessofallspecimenstested.Therefore,thetearingresistanceisexpressedinmaximumnewtons(orpounds-force)offorcetotearthespecimen.Thetearresistanceofplasticfilmmaybeaspecificationthatrequirestheuseofthistestmethod,butwithsomeproceduralmodificationsthattakeprecedencewhenadheringtothespecification.Therefore,itisadvisabletorefertothatmaterialspecificationbeforeusingthistestmethod.Table1ofClassificationSystemD4000liststheASTMmaterialsstandardsthatcurrentlyexist.1.1Thistestmethodcoversthedeterminationofthetearresistanceofflexibleplasticfilmandsheetingatverylowratesofloading,51mm(2in.)/min.andisdesignedtomeasuretheforcetoinitiatetearing.Thespecimengeometryofthistestmethodproducesastressconcentrationinasmallareaofthespecimen.Themaximumstress,usuallyfoundneartheonsetoftearing,isrecordedasthetearresistanceinnewtons(orpounds-force).Themethodisnotapplicableforfilmorsheetingmaterialwherebrittlefailuresoccurduringtestingorwheremaximumextensionisgreaterthan101.6mm(4in.).Note18212;Filmhasbeenarbitrarilydefinedassheetinghavingnominalthicknessnotgreaterthan0.25mm(0.010in.).1.2Constant-Rate-of-GripSeparationTest8212;Thistestmethodemploysaconstantrateofseparationofthegripsholdingthetestspecimen.1.2.1Specimenextensionmaybemeasuredinthistestmethodbygripseparation.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note28212;ThereisnosimilarorequivalentISOstandard.
【中国标准分类号】:G33
【国际标准分类号】:83_140_10
【页数】:4P.;A4
【正文语种】:英语
