ASTM D8387/D8387M-23
(Test Method)Standard Test Method for High Bypass – Low Bearing Interaction Response of Polymer Matrix Composite Laminates
Standard Test Method for High Bypass – Low Bearing Interaction Response of Polymer Matrix Composite Laminates
SIGNIFICANCE AND USE
5.1 Refer to Guide D8509.
SCOPE
1.1 This test method determines the uniaxial high bypass - low bearing interaction response of multi-directional polymer matrix composite laminates reinforced by high-modulus fibers using a two-fastener hard point joint specimen. The scope of this test method is limited to net section (bypass) failure modes. Standard specimen configurations using fixed values of test parameters are described for this procedure. A number of test parameters may be varied within the scope of the standard, provided that the parameters are fully documented in the test report. The composite material forms are limited to continuous-fiber or discontinuous-fiber (tape or fabric, or both) reinforced composites for which the laminate is balanced and symmetric with respect to the test direction. The range of acceptable test laminates and thicknesses are described in 8.2.1. This test method was previously published under Test Method D7248/D7248M-17 Procedure C.
1.2 This test method is consistent with the recommendations of Composite Materials Handbook, CMH-17, which describes the desirable attributes of a bearing/bypass interaction response test method.
1.3 The two-fastener test configurations described in this test method are intended to provide data in the relatively high bypass, low bearing part of the composite bolted joint bearing-bypass interaction diagram. This data complements the data from filled hole tension and compression (Practice D6742/D6742M), bearing (Test Method D5961/D5961M), and low bypass/high bearing interaction (Test Method D7248/D7248M) tests.
1.4 This test method requires careful specimen design, instrumentation, data measurement, and data analysis. The use of this test method requires close coordination between the test requestor and the test lab personnel. Test requestors need to be familiar with the data analysis procedures of this test method and should not expect test labs who are unfamiliar with this test method to be able to produce acceptable results without close coordination.
1.5 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
1.5.1 Within the text, the inch-pound units are shown in brackets.
1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 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.
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Standards Content (Sample)
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: D8387/D8387M − 23
Standard Test Method for
High Bypass – Low Bearing Interaction Response of
1
Polymer Matrix Composite Laminates
This standard is issued under the fixed designation D8387/D8387M; 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 and should not expect test labs who are unfamiliar with this test
method to be able to produce acceptable results without close
1.1 This test method determines the uniaxial high bypass -
coordination.
low bearing interaction response of multi-directional polymer
1.5 Units—The values stated in either SI units or inch-
matrix composite laminates reinforced by high-modulus fibers
pound units are to be regarded separately as standard. The
using a two-fastener hard point joint specimen. The scope of
values stated in each system are not necessarily exact equiva-
this test method is limited to net section (bypass) failure
lents; therefore, to ensure conformance with the standard, each
modes. Standard specimen configurations using fixed values of
system shall be used independently of the other, and values
test parameters are described for this procedure. A number of
test parameters may be varied within the scope of the standard, from the two systems shall not be combined.
1.5.1 Within the text, the inch-pound units are shown in
provided that the parameters are fully documented in the test
report. The composite material forms are limited to brackets.
continuous-fiber or discontinuous-fiber (tape or fabric, or both)
1.6 This standard does not purport to address all of the
reinforced composites for which the laminate is balanced and
safety concerns, if any, associated with its use. It is the
symmetric with respect to the test direction. The range of
responsibility of the user of this standard to establish appro-
acceptable test laminates and thicknesses are described in
priate safety, health, and environmental practices and deter-
8.2.1. This test method was previously published under Test
mine the applicability of regulatory limitations prior to use.
Method D7248/D7248M-17 Procedure C.
1.7 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.2 This test method is consistent with the recommendations
ization established in the Decision on Principles for the
of Composite Materials Handbook, CMH-17, which describes
Development of International Standards, Guides and Recom-
the desirable attributes of a bearing/bypass interaction response
mendations issued by the World Trade Organization Technical
test method.
Barriers to Trade (TBT) Committee.
1.3 The two-fastener test configurations described in this
test method are intended to provide data in the relatively high
2. Referenced Documents
bypass, low bearing part of the composite bolted joint bearing-
2
2.1 ASTM Standards:
bypass interaction diagram. This data complements the data
D792 Test Methods for Density and Specific Gravity (Rela-
from filled hole tension and compression (Practice D6742/
tive Density) of Plastics by Displacement
D6742M), bearing (Test Method D5961/D5961M), and low
D883 Terminology Relating to Plastics
bypass/high bearing interaction (Test Method D7248/D7248M)
D2584 Test Method for Ignition Loss of Cured Reinforced
tests.
Resins
1.4 This test method requires careful specimen design,
D2734 Test Methods for Void Content of Reinforced Plastics
instrumentation, data measurement, and data analysis. The use
D3171 Test Methods for Constituent Content of Composite
of this test method requires close coordination between the test
Materials
requestor and the test lab personnel. Test requestors need to be
D3878 Terminology for Composite Materials
familiar with the data analysis procedures of this test method
D5229/D5229M Test Method for Moisture Absorption Prop-
erties and Equilibrium Conditioning of Polymer Matrix
Composite Materials
1
This test method is under the jurisdiction of ASTM Committee D30 on
Composite Materials and is the direct responsibility of Subcommittee D30.05 on
2
Structural Test Methods. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2023. Published October 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2021. Last previous edition approved in 2021 as D8387/D8387M – 21. Standards volume information, refer to the standard’s Document Summary page on
DOI:
...
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: D8387/D8387M − 21 D8387/D8387M − 23
Standard Test Method for
High Bypass – Low Bearing Interaction Response of
1
Polymer Matrix Composite Laminates
This standard is issued under the fixed designation D8387/D8387M; 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 test method determines the uniaxial high bypass - low bearing interaction response of multi-directional polymer matrix
composite laminates reinforced by high-modulus fibers using a two-fastener hard point joint specimen. The scope of this test
method is limited to net section (bypass) failure modes. Standard specimen configurations using fixed values of test parameters
are described for this procedure. A number of test parameters may be varied within the scope of the standard, provided that the
parameters are fully documented in the test report. The composite material forms are limited to continuous-fiber or
discontinuous-fiber (tape or fabric, or both) reinforced composites for which the laminate is balanced and symmetric with respect
to the test direction. The range of acceptable test laminates and thicknesses are described in 8.2.1. This test method was previously
published under Test Method D7248/D7248M-17 Procedure C.
1.2 This test method is consistent with the recommendations of Composite Materials Handbook, CMH-17, which describes the
desirable attributes of a bearing/bypass interaction response test method.
1.3 The two-fastener test configurations described in this test method are intended to provide data in the relatively high bypass,
low bearing part of the composite bolted joint bearing-bypass interaction diagram. This data complements the data from filled hole
tension and compression (Practice D6742/D6742M), bearing (Test Method D5961/D5961M), and low bypass/high bearing
interaction (Test Method D7248/D7248M) tests.
1.4 This test method requires careful specimen design, instrumentation, data measurement, and data analysis. The use of this test
method requires close coordination between the test requestor and the test lab personnel. Test requestors need to be familiar with
the data analysis procedures of this test method and should not expect test labs who are unfamiliar with this test method to be able
to produce acceptable results without close coordination.
1.5 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in
each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.
1.5.1 Within the text, the inch-pound units are shown in brackets.
1.6 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1
This test method is under the jurisdiction of ASTM Committee D30 on Composite Materials and is the direct responsibility of Subcommittee D30.05 on Structural Test
Methods.
Current edition approved April 1, 2021Sept. 1, 2023. Published June 2021October 2023. Originally approved in 2021. Last previous edition approved in 2021 as
D8387/D8387MDOI: 10.1520/D8387_D8387M-21. – 21. DOI: 10.1520/D8387_D8387M-23.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D8387/D8387M − 23
1.7 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D883 Terminology Relating to Plastics
D2584 Test Method for Ignition Loss of Cured Reinforced Resins
D2734 Test Methods for Void Content of Reinforced Plastics
D3171 Test Methods for Constituent Content of Composite Materials
D3878
...
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