SJ/Z 734-73 收讯放大管系列型谱
时间:2024-05-18 10:45:33 来源: 标准资料网 作者：标准资料网 阅读：8308
基本信息
| 标准名称： | 收讯放大管系列型谱 |
| 英文名称： | Preferred series and types for receiving tubes |
| 中标分类： |
综合 >>
标准化管理与一般规定 >>
技术管理 |
| 发布日期： | 1973-10-29 |
| 实施日期： | 1973-10-29 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 25页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 综合 标准化管理与一般规定 技术管理
【英文标准名称】:StandardTestMethodsforConstituentContentofCompositeMaterials
【原文标准名称】:复合材料成分含量用标准试验方法
【标准号】:ASTMD3171-2009
【标准状态】:现行
【国别】:
【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】:D30.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:复合材料;纤维含量;矩阵含量;增强含量;树脂含量;实心体积:复合物-航空航天材料/设施;高模数纤维复合物-树脂矩阵;矩阵浸煮;树脂(复合物);实心体积
【英文主题词】:compositematerials;fibercontent;matrixcontent;reinforcementcontent;resincontent;voidvolume:Composites--aerospacematerials/applications;Fibercontent;Highmodulusfibrouscomposites--resin-matrix;Matrixdigestion;Resins(composite);Voi
【摘要】:Aconstituentcontentofacompositematerialmustbeknowninordertoanalyticallymodelthematerialproperties(mechanical,physical,thermal,orelectrical)ofthecompositewhichareaffectedbythereinforcementormatrix.Also,knowledgeoftheconstituentcontentisrequiredforevaluationofthequalityofafabricatedmaterialandtheprocessesusedduringfabrication.Thevoidvolumeofacompositematerialmaysignificantlyaffectsomeofitsmechanicalproperties.Highervoidvolumesusuallymeanlowerfatigueresistance,greatersusceptibilitytomoisturepenetrationandweathering,andincreasedvariationorscatterinstrengthproperties.Knowledgeofthevoidvolumeofacompositematerialisdesirableasanindicationofthequalityofacomposite.Reinforcementcontentmaybeusedtonormalizemechanicalpropertiesaffectedbyamountofreinforcementinthecoupon.1.1Thesetestmethodsdeterminetheconstituentcontentofcompositematerialsbyoneoftwoapproaches.MethodIphysicallyremovesthematrixbydigestionorignitionbyoneofsevenprocedures,leavingthereinforcementessentiallyunaffectedandthusallowingcalculationofreinforcementormatrixcontent(byweightorvolume)aswellaspercentvoidvolume.MethodII,applicableonlytolaminatematerialsofknownfiberarealweight,calculatesreinforcementormatrixcontent(byweightorvolume),andthecuredplythickness,basedonthemeasuredthicknessofthelaminate.MethodIIisnotapplicabletothemeasurementofvoidvolume.1.1.1Thesetestmethodsareprimarilyintendedfortwo-partcompositematerialsystems.However,specialprovisionscanbemadetoextendthesetestmethodstofilledmaterialsystemswithmorethantwoconstituents,thoughnotalltestresultscanbedeterminedineverycase.1.1.2Theprocedurescontainedwithinhavebeendesignedtobeparticularlyeffectiveforcertainclassesofpolymerormetalmatrices.ThesuggestedapplicationsarediscussedinSection4,aswellasatthestartofeachprocedure.1.1.3MethodIassumesthatthereinforcementisessentiallyunaffectedbythedigestionorignitionmedium.Aprocedureforcorrectionoftheresultsforminorchangesinthereinforcementisincluded.ProceduresAthroughFarebasedonchemicalremovalofthematrixwhileProcedureGremovesthematrixbyignitingthematrixinafurnace.1.1.4MethodIIassumesthatthefiberarealweightofthereinforcementmaterialformisknownorcontrolledtoanacceptabletolerance.Thepresenceofvoidsisnotmeasured.Eq9and10assumezerovoidcontenttoperformthecalculation.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SeeSection9foradditionalinformation.
【中国标准分类号】:G30
【国际标准分类号】:83_140_20
【页数】:10P.;A4
【正文语种】:
【英文标准名称】:Rust-PreventingCharacteristicsofSteamTurbineOilinthePresenceofWater(HorizontalDiskMethod),Testfor(05.02)
【原文标准名称】:在有水的情况下蒸气涡轮油的防锈特性试验方法(卧式圆盘法)(05.02)
【标准号】:ANSI/ASTMD3603-1993
【标准状态】:作废
【国别】:美国
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;防锈;润滑剂;汽轮机;石油产品
【英文主题词】:Lubricants;Oils;Petroleumproducts;Properties;Rustprotection;Steamturbines;Testing;Water
【摘要】:
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:
【正文语种】:英语