ASTM E1471-92(1998)
(Guide)Standard Guide for Identification of Fibers, Fillers, and Core Materials in Computerized Material Property Databases
Standard Guide for Identification of Fibers, Fillers, and Core Materials in Computerized Material Property Databases
SCOPE
1.1 This guide establishes the essential and desirable elements of data required for the identification in computerized material property databases of fibers, fillers, and core materials used in composite materials. A recommended format for entry of these fields into a computerized database is provided. Examples of the application of this guide are also included.
1.2 The recommended format described in this guide is suggested for use in recording data in a database, which is different from contractural reporting of actual test results. The latter type of information is described in materials specifications shown in business transactions and is subject to agreement between vendor and purchaser.
1.3 The materials covered by this guide include fibers, both continuous and discontinuous, and fillers of various geometries which are used as reinforcements in composite materials, as well as core materials used in sandwich composites. Cores may be foam, honeycomb, or naturally occurring materials such as balsa wood. These materials are distinguished from bulk materials by the importance of their specialized geometric forms to their properties. This difference is reflected in the use of geometry, along with chemistry, as a primary basis for classification. Identification of composite materials is discussed in Guide E1309.
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Standards Content (Sample)
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Designation: E 1471 – 92 (Reapproved 1998)
Standard Guide for
Identification of Fibers, Fillers, and Core Materials in
Computerized Material Property Databases
This standard is issued under the fixed designation E 1471; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope Material and Chemical Databases
1.1 This guide establishes the essential and desirable ele-
3. Terminology
ments of data required for the identification in computerized
3.1 Definitions—Terminology D 3878 shall be used where
material property databases of fibers, fillers, and core materials
applicable.
used in composite materials. A recommended format for entry
3.2 Definitions of Terms Specific to This Standard:
of these fields into a computerized database is provided.
3.2.1 core, n—a generally, centrally located layer or com-
Examples of the application of this guide are also included.
posite component of a sandwich construction, usually low
1.2 The recommended format described in this guide is
density, which separates and stabilizes the facings and trans-
suggested for use in recording data in a database, which is
mits shear between them and provides most of the shear
different from contractural reporting of actual test results. The
rigidity of the construction (see Terminology C 274).
latter type of information is described in materials specifica-
3.2.2 essential field, n—a field in a record which must be
tions shown in business transactions and is subject to agree-
filled to meet the requirements of a stated type of database (see
ment between vendor and purchaser.
Terminology E 1443).
1.3 The materials covered by this guide include fibers, both
3.2.2.1 Discussion—Fields are considered essential if they
continuous and discontinuous, and fillers of various geometries
are required to make a meaningful comparison of property data
which are used as reinforcements in composite materials, as
from different sources. A comparison of data from different
well as core materials used in sandwich composites. Cores may
sources may still be possible if essential information is omitted,
be foam, honeycomb, or naturally occurring materials such as
but the value of the comparison may be greatly reduced.
balsa wood. These materials are distinguished from bulk
3.2.3 fiber, n—in textiles, the general term for a filamentary
materials by the importance of their specialized geometric
material having a length at least ten times its nominal diameter.
forms to their properties. This difference is reflected in the use
3.2.4 field, n—an elementary unit of a record that may
of geometry, along with chemistry, as a primary basis for
contain a data item, a data aggregate, a pointer, or a link (see
classification. Identification of composite materials is dis-
E 1443).
cussed in Guide E 1309.
3.2.5 field name, n—a name or code associated with a field
2. Referenced Documents and used for identification (see Terminology E 1443).
3.2.6 filler, n—a relatively inert material added to a plastic
2.1 ASTM Standards:
2 to modify its strength, permanence, working properties, or
C 274 Terminology of Structural Sandwich Constructions
other qualities, or to lower cost (see Terminology D 883).
D 123 Terminology Relating to Textiles
4 3.2.7 strand, n—in textile fibers, a normally untwisted
D 883 Terminology Relating to Plastics
bundle of filaments.
D 3878 Terminology of High Modulus Reinforcing Fibers
2 3.2.8 value set, n—an open listing of representative, accept-
and Their Composites
able strings which could be included in a particular field of a
E 1309 Guide for the Identification of Composite Materials
record (see Terminology E 1443).
in Computerized Material Property Databases
E 1443 Terminology Relating to Building and Accessing
4. Significance and Use
4.1 This guide defines the information which is considered
essential to uniquely describe a fiber, filler, or core material in
This guide is under the jurisdiction of ASTM Committee D-30 on Composite a computerized database. A format is recommended for placing
Materials and is the direct responsibility of Subcommittee D30.01 on Editorial and
these data in fields suitable for a computerized database.
Resource Standards.
Additional fields which are considered desirable, but not
Current edition approved March 15, 1992. Published May 1992.
Annual Book of ASTM Standards, Vol 15.03.
Annual Book of ASTM Standards, Vol 07.01.
4 5
Annual Book of ASTM Standards, Vol 08.01. Annual Book of ASTM Standards, Vol 14.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E 1471
essential, are also defined. The purpose is to facilitate efficient 5.3 Commercial Specification:
storage and retrieval of the information with a computer and to 5.3.1 Common Name—Name by which the material is
allow meaningful comparison of data from different sources. known in the industry.
4.2 Comparison of property data from different sources will 5.3.2 Additional Name Information—Additional informa-
be most meaningful if all the essential information defined by tion on the name, such as chemical composition details on the
the guidelines is present. Comparison may still be possible if material.
essential information is omitted, but the value of the compari- 5.3.3 Specification Organization—A company, industry,
son may be greatly reduced. government, national, regional, or international organization
4.3 While at this time there is no generally accepted issuing the specification; for example, ASTM.
numbering system for these materials, analogous to those for 5.3.4 Specification Number—The specification number
metals and alloys, a field for an identifying number (Material within the organization referenced.
Reference Number) is included should such a system be 5.3.5 Specification Version—The year or revision code of
developed in the future. the specification.
4.4 This information should not be considered restrictive. 5.3.6 Specification Designation—The designation used for
For example, a database designer may find it useful to the material in the specification.
aggregate several fields, such as the material and chemical 5.4 Characteristics:
class fields, into a single field. This may affect search strategies 5.4.1 Density.
and other database operations. These considerations are be- 5.4.2 Cross-Section Type—Geometry of cross section of the
yond the scope of this guide. material. See Table 2 for list.
5.4.3 Dimension Parameter—Name of dimension charac-
5. Guidelines
teristic of the material; for example, diameter. Dimension
parameter, units, and value should be given for each charac-
5.1 The following fields are recommended for identification
teristic dimension. See Table 3 for list.
of fibers, fillers, and core materials used in composites. For
5.4.4 Dimension Value—Mean or nominal numerical value
certain fields, lists of recommended entries are included.
of the specified dimension in appropriate units.
Where possible, entries should be chosen from these lists.
5.4.5 Dimension Distribution Parameter Type—Name of
However, these lists should not be regarded as exhaustive.
the parameter used to characterize the distribution of values for
5.2 Primary Identifiers:
the specified dimension. See Table 4 for list.
5.2.1 Material Reference Number—Identifying number or
5.4.6 Dimension Distribution Parameter Value—Numerical
code, if any, for the particular material.
value of the distribution parameter for the specified dimension.
5.2.2 Class—Classification by form, either fiber, filler, or
core. Units are assumed to be the same as those of the dimension
itself.
5.2.3 Subclass—Further subdivision by geometric form
within the class. See Table 1 for list. 5.4.7 Dimension Distribution Sample Size—The number of
samples from which the dimension distribution parameter
5.2.4 Chemical Family—Classification of the material by its
value is determined.
generic chemical composition family. See Table 1 for list.
5.5 Source:
5.5.1 Manufacturer.
TABLE 1 Class, Subclass, Chemical Family, and Forms for
5.5.2 Manufacturer’s Identification—Code, part number, or
Fibers, Fillers, and Core Materials
other identification used by the manufacturer to identify this
NOTE 1—These are lists. The table is not intended to be read horizon-
material.
tally.
5.5.3 Lot Number—Manufacturer’s reference for traceabil-
Class Subclass Chemical Family Form
ity of this lot of material.
Fiber continuous aramid tow or end or impreg-
5.5.4 Date of Manufacture—YYYYMMDD.
discontinuous, long glass nated tow strand
...
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