SAE AMS3892/3 Tow Or Yarn, Carbon (Graphite) Fibers - for Structural Composites, Gf 400 (2760) Tensile Strength, 40 (275
时间:2024-05-27 10:19:32 来源: 标准资料网 作者：标准资料网 阅读：9356
Product Code:SAE AMS3892/3
Title:Tow Or Yarn, Carbon (Graphite) Fibers - for Structural Composites, Gf 400 (2760) Tensile Strength, 40 (275) 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 400 ksi (2758 MPa) tensile strength and 40 Msi (276 GPa) tensile modulus for use in general purpose structural composites requiring high tensile strength and moderately high modulus of elasticity in tension
【英文标准名称】:Methodsoftestforcryolite-Determinationofcalciumcontent
【原文标准名称】:冰晶石试验方法.第8部分:钙含量测定
【标准号】:BS5050-8-1980
【标准状态】:现行
【国别】:英国
【发布日期】:1980-12-31
【实施或试行日期】:1980-12-31
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:试验设备;溶液;校正;含量测定;试样制备;铝矿;冰晶石;火焰光度测定法;金属矿;原子吸收分光光度测定法;钙
【英文主题词】:Aluminiumores;Atomicabsorptionspectrometry;Atomicabsorptionspectrophotometry;Calcium;Chemicalanalysisandtesting;Cryolite;Determinationofcontent;Spectrophotometry
【摘要】:ThisInternationalStandardspecifiesaflameatomicabsorptionmethodforthedeterminationofthecalciumcontentofnaturalandartificialcryolite.
【中国标准分类号】:D59
【国际标准分类号】:73_060_40
【页数】:8P;A4
【正文语种】:英语
【英文标准名称】:Industrialcommunicationnetworks—Fieldbusspecifications—Part5-19:Applicationlayerservicedefinition—Type19elements
【原文标准名称】:工业通信网络.现场总线规范.应用层服务定义.19型元件
【标准号】:BSEN61158-5-19-2008
【标准状态】:作废
【国别】:英国
【发布日期】:2009-01-31
【实施或试行日期】:2009-01-31
【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】:应用层;应用;总线系统;总线;电路网络;通信;计算机应用;计算机控制;控制;控制设备;控制系统;控制工艺学;数据总线;数据通信;数据交换;数据传输线;数据连接系统;数据网络;数据处理;数据服务;数据传送;数据传输控制规程;定义;数字的;数字数据;数字工程;EDP;电气工程;电子仪器;电子系统;英语;现场总线;制导系统;工业的;工业设施;信息交换;信息处理;信息技术;接口;接口(数据处理);开放系统互连;操作技术;OSI;物理层;过程控制工程;服务;规范;规范(验收);传输媒质
【英文主题词】:Applicationlayer;Applications;Bussystems;Buses(dataprocessing);Circuitnetworks;Communication;Computerapplications;Computerizedcontrol;Control;Controlequipment;Controlsystems;Controltechnology;Databus;Datacommunication;Dataexchange;Dataline;Datalinksystem;Datanetwork;Dataprocessing;Dataservices;Datatransfer;Datatransmissioncontrolprocedures;Definition;Definitions;Digital;Digitaldata;Digitalengineering;EDP;Electricalengineering;Electronicinstruments;Electronicsystems;Englishlanguage;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces;Interfaces(dataprocessing);Opensystemsinterconnection;Operationaltechniques;OSI;Physicallayers;Processcontrolengineering;Services;Specification;Specification(approval);Transmissionmedia
【摘要】:Thefieldbusapplicationlayer(FAL)providesuserprogramswithameanstoaccessthefieldbuscommunicationenvironment.Inthisrespect,theFALcanbeviewedasa“windowbetweencorrespondingapplicationprograms.”Thisstandardprovidescommonelementsforbasictime-criticalandnon-time-criticalmessagingcommunicationsbetweenapplicationprogramsinanautomationenvironmentandmaterialspecifictoType19fieldbus.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.Thisstandarddefinesinanabstractwaytheexternallyvisibleserviceprovidedbythefieldbusapplicationlayerintermsofa)anabstractmodelfordefiningapplicationresources(objects)capableofbeingmanipulatedbyusersviatheuseoftheFALservice,b)theprimitiveactionsandeventsoftheservice;c)theparametersassociatedwitheachprimitiveactionandevent,andtheformwhichtheytake;andd)theinterrelationshipbetweentheseactionsandevents,andtheirvalidsequences.Thepurposeofthisstandardistodefinetheservicesprovidedto1)theFALuserattheboundarybetweentheuserandtheapplicationlayerofthefieldbusreferencemodel,and2)SystemsManagementattheboundarybetweentheapplicationlayerandSystemsManagementofthefieldbusreferencemodel.Thisstandardspecifiesthestructureandservicesofthefieldbusapplicationlayer,inconformancewiththeOSIBasicReferenceModel(ISO/IEC7498)andtheOSIapplicationlayerstructure(ISO/IEC9545).FALservicesandprotocolsareprovidedbyFALapplication-entities(AE)containedwithintheapplicationprocesses.TheFALAEiscomposedofasetofobject-orientedapplicationserviceelements(ASEs)andalayermanagemententity(LME)thatmanagestheAE.TheASEsprovidecommunicationservicesthatoperateonasetofrelatedapplicationprocessobject(APO)classes.OneoftheFALASEsisamanagementASEthatprovidesacommonsetofservicesforthemanagementoftheinstancesofFALclasses.Althoughtheseservicesspecify,fromtheperspectiveofapplications,howrequestandresponsesareissuedanddelivered,theydonotincludeaspecificationofwhattherequestingandrespondingapplicationsaretodowiththem.Thatis,thebehavioralaspectsoftheapplicationsarenotspecified;onlyadefinitionofwhatrequestsandresponsestheycansend/receiveisspecified.ThispermitsgreaterflexibilitytotheFALusersinstandardizingsuchobjectbehavior.Inadditiontotheseservices,somesupportingservicesarealsodefinedinthisstandardtoprovideaccesstotheFALtocontrolcertainaspectsofitsoperation.
【中国标准分类号】:P76
【国际标准分类号】:35_100_70;35_160;35_240_50
【页数】:38P.;A4
【正文语种】:英语