ASTM D5961/D5961M-23

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: D5961/D5961M − 23
Standard Test Method for
1
Bearing Response of Polymer Matrix Composite Laminates
This standard is issued under the fixed designation D5961/D5961M; 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 1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method covers the bearing response of pinned
responsibility of the user of this standard to establish appro-
or fastened joints using multi-directional polymer matrix
priate safety, health, and environmental practices and deter-
composite laminates reinforced by high-modulus fibers by
mine the applicability of regulatory limitations prior to use.
double-shear tensile loading (Procedure A), single-shear tensile
1.6 This international standard was developed in accor-
or compressive loading of a two-piece specimen (Procedure
dance with internationally recognized principles on standard-
B), single-shear tensile loading of a one-piece specimen
ization established in the Decision on Principles for the
(Procedure C), or double-shear compressive loading (Proce-
Development of International Standards, Guides and Recom-
dure D). Standard specimen configurations using fixed values
mendations issued by the World Trade Organization Technical
of test parameters are described for each procedure. However,
Barriers to Trade (TBT) Committee.
when fully documented in the test report, a number of test
parameters may be optionally varied. The composite material
2. Referenced Documents
forms are limited to continuous-fiber or discontinuous-fiber
2
2.1 ASTM Standards:
(tape or fabric, or both) reinforced composites for which the
D792 Test Methods for Density and Specific Gravity (Rela-
laminate is balanced and symmetric with respect to the test
tive Density) of Plastics by Displacement
direction. The range of acceptable test laminates and thick-
D883 Terminology Relating to Plastics
nesses are described in 8.2.1.
D953 Test Method for Pin-Bearing Strength of Plastics
1.2 This test method is consistent with the recommendations
D2584 Test Method for Ignition Loss of Cured Reinforced
of MIL-HDBK-17, which describes the desirable attributes of
Resins
a bearing response test method.
D2734 Test Methods for Void Content of Reinforced Plastics
D3171 Test Methods for Constituent Content of Composite
1.3 The multi-fastener test configurations described in this
Materials
test method are similar to those used by industry to investigate
D3410/D3410M Test Method for Compressive Properties of
the bypass portion of the bearing bypass interaction response
Polymer Matrix Composite Materials with Unsupported
for bolted joints, where the specimen may produce either a
Gage Section by Shear Loading
bearing failure mode or a bypass failure mode. Note that the
D3878 Terminology for Composite Materials
scope of this test method is limited to bearing and fastener
D5229/D5229M Test Method for Moisture Absorption Prop-
failure modes. Use Test Method D7248/D7248M for by-pass
erties and Equilibrium Conditioning of Polymer Matrix
testing.
Composite Materials
1.4 The values stated in either SI units or inch-pound units
D5687/D5687M Guide for Preparation of Flat Composite
are to be regarded separately as standard. The values stated in
Panels with Processing Guidelines for Specimen Prepara-
each system may not be exact equivalents; therefore, each
tion
system shall be used independently of the other. Combining
D7248/D7248M Test Method for High Bearing - Low By-
values from the two systems may result in non-conformance
pass Interaction Response of Polymer Matrix Composite
with the standard.
Laminates Using 2-Fastener Specimens
1.4.1 Within the text the inch-pound units are shown in
D8509 Guide for Test Method Selection and Test Specimen
brackets.
Design for Bolted Joint Related Properties
E4 Practices for Force Calibration and Verification of Test-
ing Machines
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 September 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1996. Last previous edition approved in 2017 as D5961/D5961M – 17. Standards volume in
...