SAE AS4851 Relative Thermal Life and Temperature Index

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Product Code:SAE AS4851
Title:Relative Thermal Life and Temperature Index
Issuing Committee:Ae8-D Wire And Cable Committee
Scope:This test method provides performance data on candidate insulation systems as a function of time and temperature. These data give engineering information on the wire insulation candidate relative to the performance of materials already in use with a backlog of experience. These tests expose candidate insulation systems to a wide range of temperatures for short and long periods of time, while measuring the degradation of its physical properties. For aerospace use, end-point proof tests include mandrel bend, water soak, and dielectric integrity.
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【英文标准名称】:StandardPracticeforDesignofArticlestoBeElectroplatedonRacks
【原文标准名称】:机件在支架上电镀的设计的标准实施规程
【标准号】:ASTMB507-1986(2008)e1
【标准状态】:现行
【国别】:美国
【发布日期】:1986
【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】:B08.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:Design--metals/alloysprocessing;Electrodepositedcoatings;Electroplatedcoatings;ElectroplatedNicoatings;Engineeredelectrodepositedcoatings;Geometricanalysis;Metalsandmetallicmaterials;Nickelcoatings;Racks;Throwingpower
【摘要】:Whenanarticleistobeelectroplated,itisnecessarytoconsidernotonlythecharacteristicsoftheelectroplatingprocess,butalsothedesignoftheparttominimizeelectroplatingandfinishingcostsandsolutiondragoutaswellastoimproveappearanceandfunctionality.Itisoftenpossibleduringthedesignandengineeringstagestomakesmalladjustmentsinshapethatwillresultinconsiderablebenefittowardabetterqualitypartatalowercost.Thespecificpropertyofanelectroplatingprocessthatwouldrequiresomeattentiontothedetailsofoptionaldesigns,isthethrowingpoweroftheelectroplatingsolution.Throwingpoweristheimprovementofthecoatingdistributionovertheprimarycurrentdistributiononanelectrode(usuallycathode)inagivensolution,underspecifiedconditions.1.1Thispracticecoversdesigninformationforpartstobeelectroplatedonracks.Therecommendationscontainedhereinarenotmandatory,butareintendedtogiveguidancetowardgoodpractice.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J36
【国际标准分类号】:25_220_20
【页数】:5P.;A4
【正文语种】:英语


【英文标准名称】:Connectorsetsandinterconnectcomponentstobeusedinopticalfibrecommunicationsystems.Productspecifications.LC-PCsimplexterminatedonIEC60793-2-50categoryB1.1andB1.3singlemodefibrewithfullzirconiaferruleforcategoryC
【原文标准名称】:光纤通信系统用光连接器和互连器件.产品规范.端接到IEC60793-2-50中B1.1和B1.3类单模光纤的单芯LC-PC型连接器(全氧化锆套管类型为C类)
【标准号】:BSEN50377-7-4-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-05-31
【实施或试行日期】:2011-05-31
【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】:
【英文主题词】:Adapters;Communicationsystems;Dimensions;Electricplugs;Electronicengineering;Electronicequipmentandcomponents;Engagementfacecontact;Glassfibrecables;Marking;Materials;Monomodefibres;Opticalwaveguides;Performanceinservice;Plugs;Productspecifications;Productstandards;Simplex;Testing;Types;Zirconium
【摘要】:1.1ProductdefinitionThisEuropeanStandardcontainstheinitial,startoflifedimensional,optical,mechanicalandenvironmentalperformancerequirementswhichaconnectorterminatedwithcylindricalzirconiaPCferruleandassembledsinglemoderesilientalignmentsleeveLC-PCsimplexconnectorset(plug/adaptor/plug)adaptorandpatchcordmustmeetinorderforittobecategorisedasanENstandardproduct.Sincedifferentvariantsandgradesofperformancearepermitted,productmarkingdetailsaregivenin3.6.1.2IntermateabilityAlthoughallproductsconformingtotherequirementsofthisstandardwillintermate,theresultinglevelofrandomattenuationperformancewillonlybeensuredinaccordancewithTable1.Theintentionisthatthiswillbetrueirrespectiveofthemanufacturingsource(s)oftheproduct.Whenintermatingplugvariantshavingdifferentattenuationgradestheresultinglevelofattenuationcannotbeassuredtobeanybetterthantheworstattenuationgrade.Therefore,theintermatingofaGradeCplugwithaGradeBplugwillresultinanuncertainlevelofrandomattenuationperformance.Asimplexplugcanbeconnectedinaduplexadaptorwithoutdegradingthelevelofperformance.1.3OperatingenvironmentThetestsselectedcombinedwiththeseveritiesanddurationsarerepresentativeofaninternalweatherprotectedenvironmentdefinedbyEN61753-1:2007,CategoryC.1.4ReliabilityWhilsttheanticipatedservicelifeexpectancyoftheproductinthisenvironmentis20years,compliancewiththisEuropeanStandarddoesnotguaranteethereliabilityoftheproduct.Thisshouldbepredictedusingarecognisedreliabilityassessmentprogramme.1.5QualityassuranceCompliancewiththisEuropeanStandarddoesnotguaranteethemanufacturingconsistencyoftheproduct.Thisshouldbemaintainedusingarecognisedqualityassuranceprogramme.
【中国标准分类号】:M33
【国际标准分类号】:33_180_20
【页数】:44P.;A4
【正文语种】:英语