ASTM_B_713_-_82_1997e1.pdf

Designation:B 713 82(Reapproved 1997)e1Standard Terminology Relating toSuperconductors1This standard is issued under the fixed designation B 713;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.e1NOTEEditorial changes were made throughout in March 1997.NoteThe designation after the definition indicates that the definition is either taken directly from the Compilation of ASTMStandard Definitions,and cites the standard in which it is used(for example,D2864)and the committee with jurisdiction(forexample,D-27),or if new,it is designated B713,B-1.1.Referenced Documents1.1 ASTM Standards:A 340 Terminology of Symbols and Definitions Relating toMagnetic Testing2B 354 Terminology Relating to Uninsulated Metallic Elec-trical Conductors3B 374 Terminology Relating to Electroplating4D 123 Terminology Relating to Textiles5D 1356 Terminology Relating to Sampling and Analysis ofAtmospheres6D 2864 Terminology Relating to Electrical Insulating Liq-uids and Gases7E 7 Terminology Relating to Metallography8E 41 Terminology Relating to Conditioning9E 269 Definitions of Terms Relating to Magnetic ParticleInspection10F 17 Terminology Relating to Flexible Barrier Materials11F 303 Practices for Sampling Aerospace Fluids from Com-ponents122.Terminologyaspect ratioratio of the longer to the shorter transversedimensions of a rectangular composite superconductor.B 713,B-1barrierany material limiting passage through itself of solids,liquids,semisolids,gases,or forms of energy such asultraviolet light.F 17,F-2braid,na narrow tubular or flat fabric produced by inter-twining strands of materials according to a definite pattern.D 123,D-13cable(concentric lay conductor)conductor constructedwith a central core surrounded by one or more layers ofhelically laid wires.DISCUSSIONSeveral types of cables(concentric lay conductors)arecompact round,conventional concentric,equilay,parallel core,rope-lay,unidirectional,and unilay,as follows:conductor,compact rounda conductor constructed with acentral core surrounded by one or more layers of helicallylaid wires and formed into final shape by rolling,drawing,orother means.conductor,conventional concentricconductor constructedwith a round central core surrounded by one or more layersof helically laid round wires.The direction of lay is reversedin successive layers,and generally with an increase in lengthof lay for successive layers.conductor,equilayconductor constructed with a central coresurrounded by more than one layer of helically laid wires,alllayers having a common length of lay,direction of lay beingreversed in successive layers.conductor,parallel coreconductor constructed with a cen-tral core of parallel-laid wires surrounded by one layer ofhelically laid wires.conductor,rope-layconductor constructed of a bunch-stranded or a concentric-stranded member or members,as acentral core,around which are laid one or more helical layersof such members.conductor,unidirectionalconductor constructed with a cen-tral core surrounded by more than one layer of helically laidwires,all layers having a common direction of lay,withincrease in length of lay for each successive layer.conductor,unilayconductor constructed with a central coresurrounded by more than one layer of helically laid wires,alllayers having a common length and direction of lay.B 354,B-1componentan individual piece or a complete assembly ofindividual pieces.F 303,F-7composite conductora conductor consisting of two or moretypes of material,each type of material being plain,clad,or1This terminology is under the jurisdiction of ASTM Committee B-1 onElectrical Conductors and is the direct responsibility of Subcommittee B01.08 onSuperconductors.Current edition approved Dec.31,1982.Published February 1983.2A nnual Book of ASTM Standards,Vol 03.04.3Annual Book of ASTM Standards,Vol 02.03.4Annual Book of ASTM Standards,Vol 02.05.5Annual Book of ASTM Standards,Vol 07.01.6Annual Book of ASTM Standards,Vol 11.03.7Annual Book of ASTM Standards,Vol 10.03.8Annual Book of ASTM Standards,Vol 03.01.9Annual Book of ASTM Standards,Vol 14.02.10Discontinued;see 1990 Annual Book of ASTM Standards,Vol 03.03.11Annual Book of ASTM Standards,Vol 15.09.12Annual Book of ASTM Standards,Vol 15.03.1AMERICAN SOCIETY FOR TESTING AND MATERIALS100 Barr Harbor Dr.,West Conshohocken,PA 19428Reprinted from the Annual Book of ASTM Standards.Copyright ASTMNOTICE:Thisstandardhaseitherbeensupersededandreplacedbyanewversionordiscontinued.ContactASTMInternational(www.astm.org)forthelatestinformation.coated,and assembled together to operate mechanically andelectrically as a single conductor.B 713,B-1composite superconductora conductor incorporating super-conductive material.DISCUSSIONSome types of composite superconductors are compos-ite conductor,corel