ASTM D3518/D3518M-18
(Test Method)Standard Test Method for In-Plane Shear Response of Polymer Matrix Composite Materials by Tensile Test of a ±45° Laminate
Standard Test Method for In-Plane Shear Response of Polymer Matrix Composite Materials by Tensile Test of a ±45° Laminate
SIGNIFICANCE AND USE
5.1 This test method is designed to produce in-plane shear property data for material specifications, research and development, quality assurance, and structural design and analysis. Factors that influence the shear response and should therefore be reported include the following: material, methods of material preparation and lay-up, specimen stacking sequence and overall thickness, specimen preparation, specimen conditioning, environment of testing, specimen alignment and gripping, speed of testing, time at temperature, void content, and volume percent reinforcement. Properties that may be derived from this test method include the following:
5.1.1 In-plane shear stress versus shear strain response,
5.1.2 In-plane shear chord modulus of elasticity,
5.1.3 Offset shear properties,
5.1.4 Maximum in-plane shear stress for a ±45° laminate, and
5.1.5 Maximum in-plane engineering shear strain for a ±45° laminate.
SCOPE
1.1 This test method determines the in-plane shear response of polymer matrix composite materials reinforced by high-modulus fibers. The composite material form is limited to a continuous-fiber-reinforced composite ±45° laminate capable of being tension tested in the laminate x direction.
1.2 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 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.
1.2.1 Within the text, the inch-pound units are shown in brackets.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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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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: D3518/D3518M − 18
Standard Test Method for
In-Plane Shear Response of Polymer Matrix Composite
1
Materials by Tensile Test of a 645° Laminate
This standard is issued under the fixed designation D3518/D3518M; 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 D3878Terminology for Composite Materials
D5229/D5229MTestMethodforMoistureAbsorptionProp-
1.1 This test method determines the in-plane shear response
erties and Equilibrium Conditioning of Polymer Matrix
of polymer matrix composite materials reinforced by high-
Composite Materials
modulus fibers. The composite material form is limited to a
E6Terminology Relating to Methods of MechanicalTesting
continuous-fiber-reinforced composite 645° laminate capable
E111Test Method for Young’s Modulus, Tangent Modulus,
of being tension tested in the laminate x direction.
and Chord Modulus
1.2 The values stated in either SI units or inch-pound units
E177Practice for Use of the Terms Precision and Bias in
are to be regarded separately as standard. The values stated in
ASTM Test Methods
each system are not exact equivalents; therefore, each system
E456Terminology Relating to Quality and Statistics
must be used independently of the other. Combining values
from the two systems may result in nonconformance with the
3. Terminology
standard.
3.1 Definitions—Terminology D3878 defines terms relating
1.2.1 Within the text, the inch-pound units are shown in
to high-modulus fibers and their composites. Terminology
brackets.
D883definestermsrelatingtoplastics.TerminologyE6defines
1.3 This standard does not purport to address all of the
terms relating to mechanical testing. Terminology E456 and
safety concerns, if any, associated with its use. It is the
Practice E177 define terms relating to statistics. In the event of
responsibility of the user of this standard to establish appro-
a conflict between terms, Terminology D3878 shall have
priate safety, health, and environmental practices and deter-
precedence over the other standards.
mine the applicability of regulatory limitations prior to use.
3.2 Definitions of Terms Specific to This Standard:
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
NOTE 1—If the term represents a physical quantity, its analytical
dimensionsarestatedimmediatelyfollowingtheterm(orlettersymbol)in
ization established in the Decision on Principles for the
fundamental dimension form, using the following ASTM standard sym-
Development of International Standards, Guides and Recom-
bology for fundamental dimensions, shown within square brackets: [M]
mendations issued by the World Trade Organization Technical
formass,[L]forlength,[T]fortime,[Θ]forthermodynamictemperature,
Barriers to Trade (TBT) Committee.
and [nd] for nondimensional quantities. Use of these symbols is restricted
to analytical dimensions when used with square brackets, as the symbols
2. Referenced Documents
may have other definitions when used without the brackets.
2
2.1 ASTM Standards:
3.2.1 645° laminate—in laminated composites, a balanced,
D883Terminology Relating to Plastics
symmetric lay-up composed only of+45° plies and−45° plies.
D3039/D3039MTestMethodforTensilePropertiesofPoly-
(See also ply orientation.)
mer Matrix Composite Materials
3.2.2 balanced, adj—in laminated composites, having, for
everyoff-axisplyorientedat+θ,anotherplyorientedat−θthat
1 is of the same material system and form.
This test method is under the jurisdiction of ASTM Committee D30 on
Composite Materials and is the direct responsibility of Subcommittee D30.04 on
3.2.3 lamina, n—pl. laminae, in laminated composites,a
Lamina and Laminate Test Methods.
single, thin, uniform layer that is the basic building block of a
Current edition approved Nov. 1, 2018. Published November 2018. Originally
laminate. (Syn. ply ).
approved in 1976. Last previous edition approved in 2013 as D3518/D3518M–13.
DOI: 10.1520/D3518_D3518M-18.
3.2.4 material coordinate system, n—in laminated
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
composites, a 123 Cartesian coordinate system describing the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
principle material coordinate system for a laminated material,
Standards volume information, refer to the standard’s Document Su
...
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: D3518/D3518M − 13 D3518/D3518M − 18
Standard Test Method for
In-Plane Shear Response of Polymer Matrix Composite
1
Materials by Tensile Test of a 645° Laminate
This standard is issued under the fixed designation D3518/D3518M; 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
1.1 This test method determines the in-plane shear response of polymer matrix composite materials reinforced by high-modulus
fibers. The composite material form is limited to a continuous-fiber-reinforced composite 645° laminate capable of being tension
tested in the laminate x direction.
1.2 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.
1.2.1 Within the text, the inch-pound units are shown in brackets.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 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:
D883 Terminology Relating to Plastics
D3039/D3039M Test Method for Tensile Properties of Polymer Matrix Composite Materials
D3878 Terminology for Composite Materials
D5229/D5229M Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite
Materials
E6 Terminology Relating to Methods of Mechanical Testing
E111 Test Method for Young’s Modulus, Tangent Modulus, and Chord Modulus
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
3
E1309 Guide for Identification of Fiber-Reinforced Polymer-Matrix Composite Materials in Databases (Withdrawn 2015)
3
E1434 Guide for Recording Mechanical Test Data of Fiber-Reinforced Composite Materials in Databases (Withdrawn 2015)
E1471 Guide for Identification of Fibers, Fillers, and Core Materials in Computerized Material Property Databases (Withdrawn
3
2015)
3. Terminology
3.1 Definitions—Terminology D3878 defines terms relating to high-modulus fibers and their composites. Terminology D883
defines terms relating to plastics. Terminology E6 defines terms relating to mechanical testing. Terminology E456 and Practice
1
This test method is under the jurisdiction of ASTM Committee D30 on Composite Materials and is the direct responsibility of Subcommittee D30.04 on Lamina and
Laminate Test Methods.
Current edition approved Aug. 1, 2013Nov. 1, 2018. Published September 2013November 2018. Originally approved in 1976. Last previous edition approved in 20072013
as D3518/D3518M – 94D3518/D3518M – 13.(2007). DOI: 10.1520/D3518_D3518M-13.10.1520/D3518_D3518M-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D3518/D3518M − 18
E177 define terms relating to statistics. In the event of a conflict between terms, Terminology D3878 shall have precedence over
the other standards.
3.2 Definitions of Terms Specific to This Standard:
NOTE 1—If the term represents a physical quantity, its analytical dimensions are stated immediately following the term (or letter symbol) in
fundamental dimension form, using the following ASTM standard symbology for fundamental dimensions, shown with
...
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