ASTM D8132/D8132M-17
(Test Method)Standard Test Method for Determination of Prepreg Impregnation by Permeability Measurement
Standard Test Method for Determination of Prepreg Impregnation by Permeability Measurement
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D8132/D8132M − 17
Standard Test Method for
Determination of Prepreg Impregnation by Permeability
1
Measurement
This standard is issued under the fixed designation D8132/D8132M; 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 ASTM Test Methods
E456Terminology Relating to Quality and Statistics
1.1 Thistestmethoddeterminesthein-planepermeabilityof
E691Practice for Conducting an Interlaboratory Study to
compositeprepreg(pre-impregnated)materialsasameasureof
Determine the Precision of a Test Method
level of impregnation. Permissible prepreg materials include
those reinforced with carbon, glass, aramid, thermoplastic and
3. Terminology
other fibers impregnated with a thermoset or thermoplastic
matrixresin,creatingasingleplysheetmaterial.Thereinforce-
3.1 Definitions—Terminology D3878 defines terms relating
ments may be unidirectional or woven fabrics.
to high-modulus fibers and their composites. Terminology
D883 defines terms relating to plastics.Terminology E456 and
1.2 The values stated in either SI units or inch-pound units
Practice E177 define terms relating to statistics. In the event of
are to be regarded separately as standard. The values stated in
a conflict between terms, Terminology D3878 shall have
each system may not be exact equivalents; therefore, each
precedence over the other terminologies.
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance 3.2 Definitions of Terms Specific to This Standard:
with the standard.
3.2.1 as cast—pertaining to the transparent and smooth
1.2.1 Within the text, the inch-pound units are shown in
surface of an acrylic block.
brackets.
3.2.2 acrylic block assembly—the acrylic blocks nested
1.3 This standard does not purport to address all of the
together or clamped together but that are otherwise oriented or
safety concerns, if any, associated with its use. It is the
joined together only for a temporary process.
responsibility of the user of this standard to establish appro-
3.2.3 cut side—machined surface of an acrylic block.
priate safety, health and environmental practices and deter-
3.2.4 permeability—Material property that determines flow
mine the applicability of regulatory limitations prior to use.
through a porous medium. Used to determine the air transport
1.4 This international standard was developed in accor-
of prepreg materials in the in-plane directions.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 3.2.5 permeability test apparatus—thevacuumtestchamber
Development of International Standards, Guides and Recom-
with known volume where the permeability test specimen is
mendations issued by the World Trade Organization Technical mounted and tested to determine permeability.
Barriers to Trade (TBT) Committee.
3.2.6 permeability test specimen—the vacuum test chamber
with known volume where the permeability test specimen is
2. Referenced Documents
mounted and tested to determine permeability.
2.1 ASTM Standards:
3.3 Symbols
D883Terminology Relating to Plastics
A = cross-sectional area of the prepreg test specimen
D3878Terminology for Composite Materials
CV = coefficient of variation statistic of a sample population
E122PracticeforCalculatingSampleSizetoEstimate,With
for a given property (in percent)
Specified Precision, the Average for a Characteristic of a
FAW = fiber areal weight
Lot or Process
H = prepreg thickness
E177Practice for Use of the Terms Precision and Bias in
ID = inner diameter
K = permeability
1
This test method is under the jurisdiction of ASTM Committee D30 on
K = normalized permeability (independent of prepreg
n
Composite Materials and is the direct responsibility of Subcommittee D30.03 on
thickness)
Constituent/Precursor Properties.
L = length of prepreg sample
Current edition approved Aug. 1, 2017. Published September 2017. DOI:
10.1520/D8132_D8132M-17 OD = outer diameter
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D8132/D8132M − 17
P=absolutepressureinvacuumchamber(Pasafunctionof orientation, location on roll, width, length, thickness, and
time) actual atmospheric pressure.
P = actual atmospheric pressure
atm
P = initial absolute pressure in vacuum chamber (P at
6. Interferences
i iabs
time 0)
6.1 Materia
...
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D8132/D8132M − 17
Standard Test Method for
Determination of Prepreg Impregnation by Permeability
1
Measurement
This standard is issued under the fixed designation D8132/D8132M; 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 ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
1.1 This test method determines the in-plane permeability of
E691 Practice for Conducting an Interlaboratory Study to
composite prepreg (pre-impregnated) materials as a measure of
Determine the Precision of a Test Method
level of impregnation. Permissible prepreg materials include
those reinforced with carbon, glass, aramid, thermoplastic and
3. Terminology
other fibers impregnated with a thermoset or thermoplastic
matrix resin, creating a single ply sheet material. The reinforce-
3.1 Definitions—Terminology D3878 defines terms relating
ments may be unidirectional or woven fabrics.
to high-modulus fibers and their composites. Terminology
D883 defines terms relating to plastics. Terminology E456 and
1.2 The values stated in either SI units or inch-pound units
Practice E177 define terms relating to statistics. In the event of
are to be regarded separately as standard. The values stated in
a conflict between terms, Terminology D3878 shall have
each system may not be exact equivalents; therefore, each
precedence over the other terminologies.
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance
3.2 Definitions of Terms Specific to This Standard:
with the standard.
3.2.1 as cast—pertaining to the transparent and smooth
1.2.1 Within the text, the inch-pound units are shown in
surface of an acrylic block.
brackets.
3.2.2 acrylic block assembly—the acrylic blocks nested
1.3 This standard does not purport to address all of the
together or clamped together but that are otherwise oriented or
safety concerns, if any, associated with its use. It is the
joined together only for a temporary process.
responsibility of the user of this standard to establish appro-
3.2.3 cut side—machined surface of an acrylic block.
priate safety, health and environmental practices and deter-
3.2.4 permeability—Material property that determines flow
mine the applicability of regulatory limitations prior to use.
through a porous medium. Used to determine the air transport
1.4 This international standard was developed in accor-
of prepreg materials in the in-plane directions.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3.2.5 permeability test apparatus—the vacuum test chamber
Development of International Standards, Guides and Recom- with known volume where the permeability test specimen is
mendations issued by the World Trade Organization Technical
mounted and tested to determine permeability.
Barriers to Trade (TBT) Committee.
3.2.6 permeability test specimen—the vacuum test chamber
with known volume where the permeability test specimen is
2. Referenced Documents
mounted and tested to determine permeability.
2.1 ASTM Standards:
3.3 Symbols
D883 Terminology Relating to Plastics
A = cross-sectional area of the prepreg test specimen
D3878 Terminology for Composite Materials
CV = coefficient of variation statistic of a sample population
E122 Practice for Calculating Sample Size to Estimate, With
for a given property (in percent)
Specified Precision, the Average for a Characteristic of a
FAW = fiber areal weight
Lot or Process
H = prepreg thickness
E177 Practice for Use of the Terms Precision and Bias in
ID = inner diameter
K = permeability
1
This test method is under the jurisdiction of ASTM Committee D30 on K = normalized permeability (independent of prepreg
n
Composite Materials and is the direct responsibility of Subcommittee D30.03 on
thickness)
Constituent/Precursor Properties.
L = length of prepreg sample
Current edition approved Aug. 1, 2017. Published September 2017. DOI:
10.1520/D8132_D8132M-17 OD = outer diameter
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D8132/D8132M − 17
P = absolute pressure in vacuum chamber (P as a function of orientation, location on roll, width, length, thickness, and
time)
actual atmospheric pressure.
P = actual atmospheric pressure
atm
P = initial absolute pressure in vacuum chamber (P at
6. Interferences
i iabs
time 0)
6.1 Material and Specimen Preparation—Poor material fab-
RH = relative humidity
rication practices, lack
...
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