ASTM G80-2007 管道涂层特效阴极剥落的标准试验方法
时间:2024-05-17 22:52:17 来源: 标准资料网 作者：标准资料网 阅读：8995
【英文标准名称】:StandardTestMethodforSpecificCathodicDisbondingofPipelineCoatings
【原文标准名称】:管道涂层特效阴极剥落的标准试验方法
【标准号】:ASTMG80-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D01.48
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:胶粘连接件;粘结强度;涂层;材料;非金属;持久性;管道;测试
【英文主题词】:anode;cathodic;disbondment;electricalstress;electrolyte;equivalentdiameter
【摘要】:1.1Thistestmethodcoversanacceleratedprocedureforsimultaneouslydeterminingcomparativecharacteristicsofinsulatingcoatingsystemsappliedtosteelpipeexteriorforthepurposeofpreventingormitigatingcorrosionthatmayoccurinundergroundservicewherethepipewillbeincontactwithnaturalsoilsandmayormaynotreceivecathodicprotection.Itisintendedforusewithsamplesofcoatedpipetakenfromcommercialproductionandisapplicabletosuchsampleswhenthecoatingischaracterizedbyfunctionasanelectricalbarrier.1.2Thistestmethodisspecificwithnooptions.ForalternativemethodsoftestseeTestMethodsG8.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly..Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:23_040_99
【页数】:5P.;A4
【正文语种】:
【英文标准名称】:StandardTestMethodforOpen-ChannelFlowMeasurementbyAcousticVelocityMeterSystems
【原文标准名称】:用传声速度计系统测试明渠流量的试验方法
【标准号】:ASTMD5389-1993(2007)
【标准状态】:现行
【国别】:
【发布日期】:1993
【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】:D19.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:流量测量;明渠流动;明渠
【英文主题词】:acousticvelocitymeter;openchannelflow;streamflow;waterdischarge
【摘要】:Thistestmethodisusedwherehighaccuracyofvelocityorcontinuousdischargemeasurementoveralongperiodoftimeisrequiredandothertestmethodsofmeasurementarenotfeasibleduetolowvelocitiesinthechannel,variablestage-dischargerelations,complexstage-dischargerelations,orthepresenceofmarinetraffic.Ithastheadditionaladvantagesofrequiringnomovingparts,introducingnoheadloss,andprovidingvirtuallyinstantaneousreadings(1to100readingspersecond).Thetestmethodmayrequirearelativelylargeamountofsiteworkandsurveyeffortandisthereforemostsuitableforpermanentorsemi-permanentinstallations.1.1Thistestmethodcoversthemeasurementofflowrateofwaterinopenchannels,streams,andclosedconduitswithafreewatersurface.1.2Thetestmethodcoverstheuseofacoustictransmissionstomeasuretheaveragewatervelocityalongalinebetweenoneormoreopposingsetsoftransducers-bythetimedifferenceorfrequencydifferencetechniques.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection6.
【中国标准分类号】:A42
【国际标准分类号】:17_120_20
【页数】:9P.;A4
【正文语种】:
Product Code:SAE AMS3892/2
Title:Tow Or Yarn, Carbon Fibers for Structural Composites, Gf 300 (2068) Tensile Strength, 50 (345) Tensile Modulus
Issuing Committee:Ams P Polymeric Materials Committee
Scope:This specification covers one type of continuous multifilament carbon fibers in the form of a tow or yarn (when twisted). The weight per unit length of the tow or yarn is governed by the filament count which is identified by the supplier's grade or material designation. Carbon tow or yarn, derived from a polyacrylonitrile precursor, with typical tensile strength over 300 ksi (2068 MPa) and tensile modulus of 50 Msi (345 GPa) for use in general purpose structural composites requiring high modulus and moderately high tensile strength