1、Designation:E 1471 92(Reapproved 2004)Standard Guide forIdentification of Fibers,Fillers,and Core Materials inComputerized Material Property Databases1This standard is issued under the fixed designation E 1471;the number immediately following the designation indicates the year oforiginal adoption or
2、,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.1.Scope1.1 This guide establishes the essential and desirable ele-ments of data required for the
3、 identification in computerizedmaterial property databases of fibers,fillers,and core materialsused in composite materials.A recommended format for entryof these fields into a computerized database is provided.Examples of the application of this guide are also included.1.2 The recommended format des
4、cribed in this guide issuggested for use in recording data in a database,which isdifferent from contractural reporting of actual test results.Thelatter type of information is described in materials specifica-tions shown in business transactions and is subject to agree-ment between vendor and purchas
5、er.1.3 The materials covered by this guide include fibers,bothcontinuous and discontinuous,and fillers of various geometrieswhich are used as reinforcements in composite materials,aswell as core materials used in sandwich composites.Cores maybe foam,honeycomb,or naturally occurring materials such as
6、balsa wood.These materials are distinguished from bulkmaterials by the importance of their specialized geometricforms to their properties.This difference is reflected in the useof geometry,along with chemistry,as a primary basis forclassification.Identification of composite materials is dis-cussed i
7、n Guide E 1309.2.Referenced Documents2.1 ASTM Standards:2C 274 Terminology of Structural Sandwich ConstructionsD 123 Terminology Relating to TextilesD 883 Terminology Relating to PlasticsD 3878 Terminology for Composite MaterialsE 1309 Guide for Identification of Fiber-ReinforcedPolymer-Matrix Compo
8、site Materials in ComputerizedMaterial Property DatabasesE 1443 Terminology Relating to Building and AccessingMaterial and Chemical Databases33.Terminology3.1 DefinitionsTerminology D 3878 shall be used whereapplicable.3.2 Definitions of Terms Specific to This Standard:3.2.1 core,na generally,centra
9、lly located layer or com-posite component of a sandwich construction,usually lowdensity,which separates and stabilizes the facings and trans-mits shear between them and provides most of the shearrigidity of the construction(see Terminology C 274).3.2.2 essential field,na field in a record which must
10、 befilled to meet the requirements of a stated type of database(seeTerminology E 1443).3.2.2.1 DiscussionFields are considered essential if theyare required to make a meaningful comparison of property datafrom different sources.A comparison of data from differentsources may still be possible if esse
11、ntial information is omitted,but the value of the comparison may be greatly reduced.3.2.3 fiber,nin textiles,the general term for a filamentarymaterial having a length at least ten times its nominal diameter.3.2.4 field,nan elementary unit of a record that maycontain a data item,a data aggregate,a p
12、ointer,or a link(seeE 1443).3.2.5 field name,na name or code associated with a fieldand used for identification(see Terminology E 1443).3.2.6 filler,na relatively inert material added to a plasticto modify its strength,permanence,working properties,orother qualities,or to lower cost(see Terminology
13、D 883).3.2.7 strand,nin textile fibers,a normally untwistedbundle of filaments.3.2.8 value set,nan open listing of representative,accept-able strings which could be included in a particular field of arecord(see Terminology E 1443).4.Significance and Use4.1 This guide defines the information which is
14、 consideredessential to uniquely describe a fiber,filler,or core material ina computerized database.Aformat is recommended for placingthese data in fields suitable for a computerized database.1This guide is under the jurisdiction of ASTM Committee D30 on CompositeMaterials and is the direct responsi
15、bility of Subcommittee D30.01 on Editorial andResource Standards.Current edition approved Mar.1,2004.Published March 2004.Originallyapproved in 1992.Last previous edition approved in 1998 as E 1471 92(1998).2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Se
16、rvice at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Withdrawn.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.Additional fields which are considered desirable,but notessential,are also defined.The purpose is to facilitate efficientstorage and retrieval of the information with a computer and toallow meaningful comparison of data from different sou