ASTM D 5961/D 5961M Standard Test Method for Bearing Response of Polymer Matrix Composite Laminates
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ASTM D 5961/D 5961M Document Information:
Title
Standard Test Method for Bearing Response of Polymer Matrix Composite Laminates
ASTM International
Publication Date:
Mar 1, 2005
Scope:
This test method covers the bearing response of
multi-directional polymer matrix composite laminates reinforced by
high-modulus fibers by either double-shear (Procedure A) tensile
loading or single-shear (Procedure B) tensile or compressive
loading of a specimen. Standard specimen configurations using fixed
values of test parameters are described for each procedure.
However, when fully documented in the test report, a number of test
parameters may be optionally varied. 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 is consistent with the recommendations of
MIL-HDBK-17, which describes the desirable attributes of a bearing
response test method.
The multi-fastener test configurations described in this test
method are similar to those used by industry to investigate the
bypass portion of the bearing bypass interaction response for
bolted joints, where the specimen may produce either a bearing
failure mode or a bypass failure mode. While this test method may
be referenced as guidance in bearing bypass test programs, the
scope of this test method is limited to bearing failure modes.
The values stated in either SI units or inch-pound units are to
be regarded separately as standard. Within the text the inch-pound
units are shown in brackets. The values stated in each system are
not exact equivalents; therefore, each system must be used
independently of the other. Combining values from the two systems
may result in nonconformance with the standard.
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 appropriate
safety and health practices and determine the applicability of
regulatory limitations prior to use.
Keywords:
- bearing properties
- bearing strength
- composite materials
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