DIN VDE 0281-1-2003 额定电压为450/750V及以下的热塑性塑料绝缘电缆.第1部分:一般要求
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【英文标准名称】:Cablesofratedvoltagesuptoandincluding450/750Vandhavingthermoplasticinsulation-Part1:Generalrequirements;GermanversionHD21.1S4:2002
【原文标准名称】:额定电压为450/750V及以下的热塑性塑料绝缘电缆.第1部分:一般要求
【标准号】:DINVDE0281-1-2003
【标准状态】:作废
【国别】:德国
【发布日期】:2003-09
【实施或试行日期】:2003-09-01
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;电缆护套;电力导线;电缆;电缆;电气工程;聚氯乙烯绝缘材料;聚氯乙烯护套;聚氯乙烯;绝缘覆层;外套;绝缘电缆;额定电压;电气安全;表面;绝缘;防电击;规范(验收);电绝缘材料;电线;绝缘的;导(线)管;聚氯乙烯绝缘
【英文主题词】:Cablesheaths;Cables;Coats;Conduits;Definition;Definitions;Electriccables;Electricalcords;Electricalengineering;Electricalinsulatingmaterials;Electricalsafety;Insulated;Insulatedcables;Insulatingcoverings;Insulations;Polyvinylchloride;Polyvinylchlorideinsulation;Powerlines;Protectionagainstelectricshocks;PVCinsulations;PVC-sheaths;Ratedvoltage;Specification(approval);Surfaces
【摘要】:
【中国标准分类号】:K13
【国际标准分类号】:29_060_20
【页数】:26P.;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodsforLaboratoryDeterminationofRockAnchorCapacitiesbyPullandDropTests
【原文标准名称】:实验室测定石锚能力的拉伸和跌落试验的标准试验方法
【标准号】:ASTMD7401-2008
【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】:D18.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:impactenergy;impactvelocity
【摘要】:Forasupportsystemtobefullyeffective,thesupportsystemmustbeabletocontainthemovementofrockmaterialduetoexcavationstressrelease,slabbing,etc.Datafromtheloadtestsareusedbyengineerstodesigntheappropriatesupportsystemtoimprovesafetyandstabilityofundergroundsupportsystems.TestMethodsD4435andD4436areusedforin-situloadtests.Thelocalcharacteristicsoftherock,suchasroughnessandinducedfractures,aresignificantfactorsintheanchorstrength.Thematerialusedtosimulatetheboreholesurfaceshouldbesufficientlyroughenedsothatfailureoccursintherockanchorandnotatthesimulatedanchor-rocksurface.Inthecaseofsteelpipe,internalthreadingusingdifferentspacinganddepthisaccomplishedusingamachinistx2019;slathetosimulateroughness.Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthesefactors.1.1Thesetestmethodscoverthequantitativedeterminationoftheworkingandultimatestaticordynamiccapacitiesoffullscalerockanchors.Dynamiccapacitiesaredeterminedtosimulaterockburstandblastingconditions(1).Therockanchorsareinstalledinsteelpipetosimulatestandardboreholessizes.Rockanchorcapacitiesaredeterminedasafunctionofresintosteelboltbondstrengthandsteelboltyieldstrength.Thesetestsarenotintendedtodeterminerockanchortoboreholerocksurfaceshearstrength.1.2Thesetestmethodsareapplicabletomechanical,resin,orothersimilaranchorsystems.1.3Twomethodsareprovidedtodeterminethecapacitiesofrockanchors,asfollows:1.3.1MethodA8212;Usingahorizontalhydraulicallyloadedpulltestsystem.1.3.2MethodB8212;Usingaverticaldynamicallyloadeddroptestsystem.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P22
【国际标准分类号】:93_020
【页数】:7P.;A4
【正文语种】:英语
【英文标准名称】:Hardmetals-Vickershardnesstest
【原文标准名称】:硬质合金.维氏硬度试验
【标准号】:BSEN23878-1993
【标准状态】:现行
【国别】:英国
【发布日期】:1993-06-15
【实施或试行日期】:1993-06-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:维氏硬度测量;试样;验证;硬度测量;试验设备;试验条件;硬质合金;硬度试验;粉末冶金;金属;合金
【英文主题词】:Carbides;Hardmetals;Hardness;Hardnessmeasurement;Hardnesstesting;Materials;Mechanicaltesting;Metals;Physicalproperties;Powdermetallurgy;Samples;Testequipment;Testing;Tests;Vickers;Vickershardness;Vickershardnessmeasurement
【摘要】:ThisInternationalStandardspecifiesthemethodofVickershardnesstestforhardmetals.
【中国标准分类号】:H22
【国际标准分类号】:77_040_10;77_160
【页数】:16P.;A4
【正文语种】:英语
