ASTM B987/B987M-17
(Specification)Standard Specification for Carbon Fiber Thermoset Polymer Matrix Composite Core (CFC) for use in Overhead Electrical Conductors
Standard Specification for Carbon Fiber Thermoset Polymer Matrix Composite Core (CFC) for use in Overhead Electrical Conductors
SCOPE
1.1 This specification covers carbon fiber reinforced thermoset matrix composite core strength members for use in reinforcing or supporting overhead electrical conductors.
1.2 This specification covers carbon fiber core diameters from 0.180 to 0.500 in. [4.57 to 12.7 mm], inclusive.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:B987/B987M −17
Standard Specification for
Carbon Fiber Thermoset Polymer Matrix Composite Core
1
(CFC) for use in Overhead Electrical Conductors
This standard is issued under the fixed designation B987/B987M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope D7028 TestMethodforGlassTransitionTemperature(DMA
Tg) of Polymer Matrix Composites by Dynamic Mechani-
1.1 This specification covers carbon fiber reinforced ther-
cal Analysis (DMA)
moset matrix composite core strength members for use in
E29 Practice for Using Significant Digits in Test Data to
reinforcing or supporting overhead electrical conductors.
Determine Conformance with Specifications
1.2 This specification covers carbon fiber core diameters
from 0.180 to 0.500 in. [4.57 to 12.7 mm], inclusive.
3. Terminology
1.3 The values stated in either SI units or inch-pound units
3.1 Definitions of Terms Specific to This Standard:
are to be regarded separately as standard. The values stated in
3.1.1 CFC (carbon fiber composite core/thermoset matrix),
each system may not be exact equivalents; therefore, each
n—consisting of continuous carbon fiber tows held together by
system shall be used independently of the other. Combining
a polymer matrix where the polymer is specifically a thermo-
values from the two systems may result in non-conformance
setting polymer. The carbon fiber composite core is protected
with the standard.
with a galvanic protection barrier layer.
1.4 This standard does not purport to address all of the
3.1.2 core, n—see CFC.
safety concerns, if any, associated with its use. It is the
3.1.3 design validation tests, n—the purpose of these tests is
responsibility of the user of this standard to establish appro-
to verify the suitability of the CFC design, materials, and
priate safety and health practices and determine the applica-
method of manufacturing to meet the requirements in this
bility of regulatory limitations prior to use.
specification. To ensure compliance with this specification,
these tests shall be performed on composite core samples at the
2. Referenced Documents
time of manufacture and be repeated whenever the design,
2.1 The following documents of the issue in effect on date
manufacturing method or the materials have changed. The
of material purchase form a part of this specification to the
results of design validation tests are to be recorded and are
extent referenced herein.
considered valid for the whole class of CFC.
2
2.2 ASTM Standards:
3.1.4 DMA (dynamic mechanical analyzer), n—a device
D792 Test Methods for Density and Specific Gravity (Rela-
that measures the T of a polymer matrix or composite by
g
tive Density) of Plastics by Displacement
subjecting the sample to an oscillating stress while heating the
D3916 Test Method for Tensile Properties of Pultruded
specimen at a given heating rate.
Glass-Fiber-Reinforced Plastic Rod
3.1.5 galvanic protection barrier layer, n—a layer that
D5117 Test Method for Dye Penetration of Solid Fiberglass
prevents the carbon fiber of the composite core from making
Reinforced Pultruded Stock
contact with the aluminum strands used in the conductor.
D5423 Specification for Forced-Convection Laboratory Ov-
3.1.6 glass transition temperature (T ), n—a temperature
ens for Evaluation of Electrical Insulation g
where the polymer matrix properties transition from a hard,
glassystatetoarubberystate.Thistemperatureisdefinedtobe
1 the temperature at which a curve defined by plotting loss
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on modulus versus temperature reaches its peak value.
Conductors of Light Metals.
3.1.7 loss modulus, n—represents the viscous portion of the
Current edition approved Feb. 1, 2017. Published March 2017. Originally
polymer matrix response to the simultaneous application of
approved in 2014. Last previous edition approved in 2014 as B987/B987M – 14.
DOI: 10.1520/B0987/B0987M-17.
heat and stress; is proportional to the energy dissipated as heat
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
by the composite sample in the DMAand reaches a maximum
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
value when the polymer matrix in the composite transitions
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. from the glassy to the rubbery state (T ).
g
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B987/B987M − 14 B987/B987M − 17
Standard Specification for
Carbon Fiber Thermoset Polymer Matrix Composite Core
1
(CFCC/TS)(CFC) for use in Overhead Electrical Conductors
This standard is issued under the fixed designation B987/B987M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers carbon fiber reinforced thermoset matrix composite core strength members for use in reinforcing
or supporting overhead electrical conductors.
1.2 This specification covers carbon fiber core diameters from 0.180 to 0.500 in. [4.57 to 12.7 mm], inclusive.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein.
2
2.2 ASTM Standards:
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D3916 Test Method for Tensile Properties of Pultruded Glass-Fiber-Reinforced Plastic Rod
D5117 Test Method for Dye Penetration of Solid Fiberglass Reinforced Pultruded Stock
D5423 Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
D7028 Test Method for Glass Transition Temperature (DMA Tg) of Polymer Matrix Composites by Dynamic Mechanical
Analysis (DMA)
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 CFCC (carbon fiber composite core), n—consisting of continuous carbon fiber tows held together by a polymer matrix
and protected with a galvanic protection barrier layer.
3.1.1 CFCC/TSCFC (carbon fiber composite core/thermoset matrix), n—consisting of continuous carbon fiber tows held
together by a polymer matrix where the polymer is specifically a thermosetting polymer. The carbon fiber composite core is
protected with a galvanic protection barrier layer.
3.1.2 core, n—see CFCCCFC. or CFCC/TS.
3.1.3 design validation tests, n—the purpose of these tests is to verify the suitability of the CFCC/TSCFC design, materials, and
method of manufacturing to meet the requirements in this specification. To ensure compliance with this specification, these tests
1
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on Conductors
of Light Metals.
Current edition approved Sept. 1, 2014Feb. 1, 2017. Published September 2014March 2017. Originally approved in 2014. Last previous edition approved in 2014 as
B987/B987M – 14. DOI: 10.1520/B0987/B0987M-14.10.1520/B0987/B0987M-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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B987/B987M − 17
shall be performed on composite core samples at the time of manufacture and be repeated whenever the design, manufacturing
method or the materials have changed. The results of design validation tests are to be recorded and are considered valid for the
whole class of CFCC/TS.CFC.
3.1.4 DMA (dynamic mechanical analyzer), n—a device that measures the T of a polymer matrix or composite by subjecting
g
the sample to an oscillating stress while heating the specimen at a given heating rate.
3.1.5 galvanic protection barrier layer, n—a layer that prevents the carbon fiber of the composite core from making contact with
the aluminum strands used in the conductor
...
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