Standard Test Method for Open Hole Tensile Strength of Polymer Matrix Composite Laminates

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1.1 This test method determines the open hole tensile strength of multidirectional polymer matrix composite laminates reinforced by high-modulus fibers. The composite material forms are limited to continuous-fiber or discontinuous-fiber (tape or fabric, or both) reinforced composites in 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.
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.
1.3 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.

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ASTM D5766/D5766M-02a - Standard Test Method for Open Hole Tensile Strength of Polymer Matrix Composite Laminates
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D5766/D5766M–02a
Standard Test Method for
Open Hole Tensile Strength of Polymer Matrix Composite
1
Laminates
This standard is issued under the fixed designation D5766/D5766M; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope D3171 TestMethodsforConstituentContentofComposite
4
Materials
1.1 This test method determines the open hole tensile
4
D3878 Terminology for Composite Materials
strength of multidirectional polymer matrix composite lami-
E6 Terminology Relating to Methods of Mechanical Test-
nates reinforced by high-modulus fibers. The composite mate-
5
ing
rialformsarelimitedtocontinuous-fiberordiscontinuous-fiber
E177 Practice for Use of the Terms Precision and Bias in
(tape or fabric, or both) reinforced composites in which the
6
ASTM Test Methods
laminate is balanced and symmetric with respect to the test
6
E456 Terminology Relating to Quality and Statistics
direction. The range of acceptable test laminates and thick-
E691 Practice for Conducting an Interlaboratory Study to
nesses are described in 8.2.1.
6
Determine the Precision of a Test Method
1.2 The values stated in either SI units or inch-pound units
E 1309 Guide for Identification of Fiber-Reinforced
are to be regarded separately as standard. Within the text the
4
Polymer-Matrix Composite Materials in Databases
inch-pound units are shown in brackets. The values stated in
E1434 GuideforRecordingMechanicalTestDataofFiber-
each system are not exact equivalents; therefore, each system
4
Reinforced Composite Materials in Databases
must be used independently of the other. Combining values
E1471 Guide for Identification of Fibers, Fillers and Core
from the two systems may result in nonconformance with the
4
Materials in Computerized Material Property Databases
standard.
1.3 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions—TerminologyD3878definestermsrelating
responsibility of the user of this standard to establish appro-
to high-modulus fibers and their composites. Terminology
priate safety and health practices and determine the applica-
D883 defines terms relating to plastics. Terminology E6
bility of regulatory limitations prior to use.
defines terms relating to mechanical testing. Terminology
2. Referenced Documents E456 and Practice E177 define terms relating to statistics. In
the event of a conflict between terms, Terminology D3878
2.1 ASTM Standards:
shall have precedence over the other standards.
D792 TestMethodsforDensityandSpecificGravity(Rela-
2 3.2 Definitions of Terms Specific to This Standard::
tive Density) of Plastics by Displacement
2
D883 Terminology Relating to Plastics
NOTE 1—If the term represents a physical quantity, its analytical
D2584 Test Method for Ignition Loss of Cured Reinforced
dimensionsarestatedimmediatelyfollowingtheterm(orlettersymbol)in
3
fundamental dimension form, using the following ASTM standard sym-
Resins
bology for fundamental dimensions, shown within square brackets: [M]
D2734 Test Methods for Void Content of Reinforced Plas-
3 for mass, [L] for length, [T] for time, [u] for thermodynamic temperature,
tics
and[nd]fornon-dimensionalquantities.Useofthesesymbolsisrestricted
D3039/D3039M Test Method for Tensile Properties of
to analytical dimensions when used with square brackets, as the symbols
4
Polymer Matrix Composite Materials
may have other definitions when used without the brackets.
3.2.1 nominal value, n—a value, existing in name only,
1
assigned to a measurable property for the purpose of conve-
This test method is under the jurisdiction of ASTM Committee D30 on
Composite Materials and is the direct responsibility of Subcommittee D30.05 on
nient designation. Tolerances may be applied to a nominal
Structural Test Methods.
value to define an acceptable range for the property.
Current edition approved Dec. 10, 2002. Published February 2003. Originally
approvedin1995.Lastpreviouseditionapprovedin2002asD5766/D5766M–02.
2
Annual Book of ASTM Standards, Vol 08.01.
3 5
Annual Book of ASTM Standards, Vol 08.02. Annual Book of ASTM Standards, Vol 03.01.
4 6
Annual Book of ASTM Standards, Vol 15.03. Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5766/D5766M–02a
3.2.2 principal material coordinate system, n—a coordinate common aerospace practice to develop notched design allow-
system with axes that are normal to the planes of symmetry able
...

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