ASTM D3846-08(2015)
(Test Method)Standard Test Method for In-Plane Shear Strength of Reinforced Plastics (Withdrawn 2024)
Standard Test Method for In-Plane Shear Strength of Reinforced Plastics (Withdrawn 2024)
SIGNIFICANCE AND USE
5.1 Shear tests of various kinds are widely used in the reinforced plastics industry to assess the strength of the reinforcement-to-resin bond in polyester-, vinyl ester-, and epoxy-resin composites. In addition to their importance for the generation of data for research and development, quality control, and specification purposes, such tests are of fundamental value to the fibrous reinforcement industry, since they can be used to assess the potential of new sizing systems for the surface treatment of glass fibers.
5.2 This test method is useful for establishing the shear strength of laminates or other reinforced plastics having randomly dispersed fiber reinforcement. While the test also lends itself to parallel-fiber reinforced plastics, it has been designed to accommodate nonparallel-fiber reinforced materials that cannot be tested satisfactorily by the short-beam procedure described in Test Method D2344/D2344M.
SCOPE
1.1 This test method covers the determination of the in-plane shear strength of reinforced thermosetting plastics in flat sheet form in thicknesses ranging from 2.54 to 6.60 mm (0.100 to 0.260 in.). This protocol in not for reinforced pultruded thermoset products, which may use Test Method D2344/D2344M.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
Note 1: There is no known ISO equivalent to this standard.
WITHDRAWN RATIONALE
This test method covers the determination of the in-plane shear strength of reinforced thermosetting plastics in flat sheet form in thicknesses ranging from 2.54 to 6.60 mm (0.100 to 0.260 in.). This protocol in not for reinforced pultruded thermoset products, which may use Test Method D2344/D2344M.
Formerly under the jurisdiction of Committee D20 on Plastics, this test method was withdrawn in January 2024 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
General Information
Relations
Buy Standard
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: D3846 − 08 (Reapproved 2015)
Standard Test Method for
In-Plane Shear Strength of Reinforced Plastics
This standard is issued under the fixed designation D3846; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope axis of the specimen between two centrally located notches
machined halfway through its thickness on opposing faces.
1.1 This test method covers the determination of the in-
plane shear strength of reinforced thermosetting plastics in flat
4. Summary of Test Method
sheetforminthicknessesrangingfrom2.54to6.60mm(0.100
4.1 In-plane shear strength, as determined by this test
to 0.260 in.). This protocol in not for reinforced pultruded
method, is measured by applying a compressive load to a
thermoset products, which may use Test Method D2344/
notched specimen of uniform width. The specimen is loaded
D2344M.
edgewise in a supporting jig of the same description as that
1.2 The values stated in SI units are to be regarded as the
referenced in Test Method D695 for testing thin specimens.A
standard. The values given in parentheses are for information
schematic of the specimen used for this test and the supporting
only.
jig is shown in Fig. 1. Failure of the specimen occurs in shear
1.3 This standard does not purport to address all of the
between two centrally located notches machined halfway
safety concerns, if any, associated with its use. It is the
through its thickness and spaced a fixed distance apart on
responsibility of the user of this standard to establish appro-
opposing faces.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Significance and Use
NOTE 1—There is no known ISO equivalent to this standard.
5.1 Shear tests of various kinds are widely used in the
reinforced plastics industry to assess the strength of the
2. Referenced Documents
reinforcement-to-resin bond in polyester-, vinyl ester-, and
2.1 ASTM Standards: epoxy-resin composites. In addition to their importance for the
D618Practice for Conditioning Plastics for Testing
generation of data for research and development, quality
D695Test Method for Compressive Properties of Rigid
control,andspecificationpurposes,suchtestsareoffundamen-
Plastics
tal value to the fibrous reinforcement industry, since they can
D2344/D2344MTest Method for Short-Beam Strength of
be used to assess the potential of new sizing systems for the
PolymerMatrixCompositeMaterialsandTheirLaminates surface treatment of glass fibers.
E4Practices for Force Verification of Testing Machines
5.2 This test method is useful for establishing the shear
E691Practice for Conducting an Interlaboratory Study to
strength of laminates or other reinforced plastics having
Determine the Precision of a Test Method
randomly dispersed fiber reinforcement. While the test also
lends itself to parallel-fiber reinforced plastics, it has been
3. Terminology
designed to accommodate nonparallel-fiber reinforced materi-
3.1 Definitions:
als that cannot be tested satisfactorily by the short-beam
3.1.1 in-plane shear strength—the shear strength at rupture
procedure described in Test Method D2344/D2344M.
in which the plane of fracture is located along the longitudinal
6. Apparatus
This test method is under the jurisdiction ofASTM Committee D20 on Plastics
6.1 Testing Machine—Any suitable testing machine capable
and is the direct responsibility of Subcommittee D20.18 on Reinforced Thermoset-
of control of constant-rate-of-crosshead movement and com-
ting Plastics.
prising essentially the following:
Current edition approved Sept. 1, 2015. Published September 2015. Originally
6.1.1 Drive Mechanism—A drive mechanism for imparting
approved in 1979. Last previous edition approved in 2008 as D3846-08. DOI:
10.1520/D3846-08R15.
to the movable member a uniform, controlled velocity with
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
respect to the stationary member, as required in 10.3.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.1.2 Load Indicator—A load-indicating mechanism ca-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. pable of showing the total compressive load carried by the test
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3846 − 08 (2015)
suspected or known to be anisotropic, ten specimens (five
normal to and five parallel with the principal axis of anisot-
ropy) shall be tested.
8. Conditioning
8.1 Conditioning—Condition the test specimens at 23 6
2°C(73.4 63.6°F)and50 65%relativehumidityfornotless
than 40 h prior to test in accordance with Procedure A of
Practice D618, for those tests where conditioning is required.
Incaseofdisagreement,thetolerancesshallbe 61°C(61.8°F)
and 62% relative humidity.
8.2 Test Conditions—Conduct tests in the standard labora-
tory atmosphere of 23 6 2°C (73.4 6 3.6°F) and 50 65%
relative humidity, unless otherwise specified. In cases of
disagreement, the tolerances shall be 61°C (61.8°F) and
62% relative humidity.
9. Speed of Testing
9.1 Speed of testing shall be the relative rate of motion of
the grips or test fixtures during the test. Rate of motion of the
driven grip or fixture when the machine is running idle may be
used if it can be shown that the resulting speed of testing is
within the limits of variation allowed.
FIG. 1 Specimen and Loading Jig for In-Plane Shear Test
9.2 Thestandardspeedoftestingshallbe1.360.3mm/min
(0.050 6 0.010 in./min).
specimen. The mechanism shall be essentially free of inertial
lag at the specified rate of testing and shall indicate the load
10. Procedure
with an accuracy of 61% of the maximum indicated value of
10.1 Measure the width of the specimen between the
the test (load). The accuracy of the testing machine shall be
notches to the nearest 0.025 mm (0.001 in.).
verified at least once a year in accordance with Practices E4.
10.2 Mount the specimen in the supporting jig (Fig. 1)so
6.1.3 Compression Tool—A compression tool for applying
that it is flush with the base and centered. Tighten the nuts of
the load to the test specimen, such as those shown in Figs. 1
the jig with the torque wrench of 6.1.6 to a torque of
and 2 of Test Method D695.
0.113+0.000,−0.028 N·m (1.00+0.00,−0.25 lbf·in.). Place
6.1.4 Supporting Jig—A supporting jig, shown schemati-
the assembly in the compression tool described in 6.1.3.
callyinFig.1,andconformingtothedimensionsofthatshown
in Fig. 4 o
...
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: D3846 − 08 (Reapproved 2015)
Standard Test Method for
In-Plane Shear Strength of Reinforced Plastics
This standard is issued under the fixed designation D3846; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope axis of the specimen between two centrally located notches
machined halfway through its thickness on opposing faces.
1.1 This test method covers the determination of the in-
plane shear strength of reinforced thermosetting plastics in flat
4. Summary of Test Method
sheet form in thicknesses ranging from 2.54 to 6.60 mm (0.100
4.1 In-plane shear strength, as determined by this test
to 0.260 in.). This protocol in not for reinforced pultruded
method, is measured by applying a compressive load to a
thermoset products, which may use Test Method D2344/
notched specimen of uniform width. The specimen is loaded
D2344M.
edgewise in a supporting jig of the same description as that
1.2 The values stated in SI units are to be regarded as the
referenced in Test Method D695 for testing thin specimens. A
standard. The values given in parentheses are for information
schematic of the specimen used for this test and the supporting
only.
jig is shown in Fig. 1. Failure of the specimen occurs in shear
1.3 This standard does not purport to address all of the
between two centrally located notches machined halfway
safety concerns, if any, associated with its use. It is the
through its thickness and spaced a fixed distance apart on
responsibility of the user of this standard to establish appro-
opposing faces.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Significance and Use
NOTE 1—There is no known ISO equivalent to this standard. 5.1 Shear tests of various kinds are widely used in the
reinforced plastics industry to assess the strength of the
2. Referenced Documents
reinforcement-to-resin bond in polyester-, vinyl ester-, and
2.1 ASTM Standards:
epoxy-resin composites. In addition to their importance for the
D618 Practice for Conditioning Plastics for Testing
generation of data for research and development, quality
D695 Test Method for Compressive Properties of Rigid
control, and specification purposes, such tests are of fundamen-
Plastics
tal value to the fibrous reinforcement industry, since they can
D2344/D2344M Test Method for Short-Beam Strength of be used to assess the potential of new sizing systems for the
Polymer Matrix Composite Materials and Their Laminates
surface treatment of glass fibers.
E4 Practices for Force Verification of Testing Machines
5.2 This test method is useful for establishing the shear
E691 Practice for Conducting an Interlaboratory Study to
strength of laminates or other reinforced plastics having
Determine the Precision of a Test Method
randomly dispersed fiber reinforcement. While the test also
lends itself to parallel-fiber reinforced plastics, it has been
3. Terminology
designed to accommodate nonparallel-fiber reinforced materi-
3.1 Definitions:
als that cannot be tested satisfactorily by the short-beam
3.1.1 in-plane shear strength—the shear strength at rupture
procedure described in Test Method D2344/D2344M.
in which the plane of fracture is located along the longitudinal
6. Apparatus
This test method is under the jurisdiction of ASTM Committee D20 on Plastics 6.1 Testing Machine—Any suitable testing machine capable
and is the direct responsibility of Subcommittee D20.18 on Reinforced Thermoset-
of control of constant-rate-of-crosshead movement and com-
ting Plastics.
prising essentially the following:
Current edition approved Sept. 1, 2015. Published September 2015. Originally
6.1.1 Drive Mechanism—A drive mechanism for imparting
approved in 1979. Last previous edition approved in 2008 as D3846 - 08. DOI:
10.1520/D3846-08R15.
to the movable member a uniform, controlled velocity with
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
respect to the stationary member, as required in 10.3.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.1.2 Load Indicator—A load-indicating mechanism ca-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. pable of showing the total compressive load carried by the test
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3846 − 08 (2015)
suspected or known to be anisotropic, ten specimens (five
normal to and five parallel with the principal axis of anisot-
ropy) shall be tested.
8. Conditioning
8.1 Conditioning—Condition the test specimens at 23 6
2°C (73.4 6 3.6°F) and 50 6 5 % relative humidity for not less
than 40 h prior to test in accordance with Procedure A of
Practice D618, for those tests where conditioning is required.
In case of disagreement, the tolerances shall be 61°C (61.8°F)
and 62 % relative humidity.
8.2 Test Conditions—Conduct tests in the standard labora-
tory atmosphere of 23 6 2°C (73.4 6 3.6°F) and 50 6 5 %
relative humidity, unless otherwise specified. In cases of
disagreement, the tolerances shall be 61°C (61.8°F) and
62 % relative humidity.
9. Speed of Testing
9.1 Speed of testing shall be the relative rate of motion of
the grips or test fixtures during the test. Rate of motion of the
driven grip or fixture when the machine is running idle may be
used if it can be shown that the resulting speed of testing is
within the limits of variation allowed.
FIG. 1 Specimen and Loading Jig for In-Plane Shear Test
9.2 The standard speed of testing shall be 1.36 0.3 mm/min
(0.050 6 0.010 in./min).
specimen. The mechanism shall be essentially free of inertial
lag at the specified rate of testing and shall indicate the load
10. Procedure
with an accuracy of 61 % of the maximum indicated value of
10.1 Measure the width of the specimen between the
the test (load). The accuracy of the testing machine shall be
notches to the nearest 0.025 mm (0.001 in.).
verified at least once a year in accordance with Practices E4.
10.2 Mount the specimen in the supporting jig (Fig. 1) so
6.1.3 Compression Tool—A compression tool for applying
that it is flush with the base and centered. Tighten the nuts of
the load to the test specimen, such as those shown in Figs. 1
the jig with the torque wrench of 6.1.6 to a torque of
and 2 of Test Method D695.
0.113 + 0.000, − 0.028 N·m (1.00 + 0.00, − 0.25 lbf·in.). Place
6.1.4 Supporting Jig—A supporting jig, shown schemati-
the assembly in the compression tool described in 6.1.3.
cally in Fig. 1, and conforming to the dimensions of that shown
in Fig. 4 of Test Method D695.
10.3 Set the speed control at 1.3 mm/min (0.050 in./min)
6.1.5
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.