ASTM C363/C363M-09

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: C363/C363M − 09
StandardTest Method for
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Node Tensile Strength of Honeycomb Core Materials
This standard is issued under the fixed designation C363/C363M; 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 E1434 Guide for Recording Mechanical Test Data of Fiber-
Reinforced Composite Materials in Databases
1.1 This test method covers the determination of the tensile-
E1471 Guide for Identification of Fibers, Fillers, and Core
node bond strength of honeycomb core materials.
Materials in Computerized Material Property Databases
1.2 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
3. Terminology
each system may not be exact equivalents; therefore, each
3.1 Definitions—Terminology D3878 defines terms relating
system shall be used independently of the other. Combining
to high-modulus fibers and their composites. Terminology
values from the two systems may result in non-conformance
C274 defines terms relating to structural sandwich construc-
with the standard.
tions. Terminology D883 defines terms relating to plastics.
1.3 This standard does not purport to address all of the
Terminology E6 defines terms relating to mechanical testing.
safety concerns, if any, associated with its use. It is the
Terminology E456 and Practice E177 define terms relating to
responsibility of the user of this standard to establish appro-
statistics.Intheeventofaconflictbetweenterms,Terminology
priate safety and health practices and determine the applica-
D3878 shall have precedence over the other Terminologies.
bility of regulatory limitations prior to use.
3.2 Symbols:
3.2.1 σ—tensile node strength, MPa [psi].
2. Referenced Documents
3.2.2 P—ultimate tensile force, N [lb].
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2.1 ASTM Standards:
3.2.3 b—initial width of specimen, mm [in.].
C274 Terminology of Structural Sandwich Constructions
D883 Terminology Relating to Plastics
3.2.4 t—thickness of specimen, mm [in.].
D3878 Terminology for Composite Materials
3.2.5 x¯—sample mean (average).
D5229/D5229M TestMethodforMoistureAbsorptionProp-
3.2.6 S —sample standard deviation.
n−1
erties and Equilibrium Conditioning of Polymer Matrix
3.2.7 CV—sample coefficient of variation (in percent).
Composite Materials
E4 Practices for Force Verification of Testing Machines
3.2.8 n—number of specimens.
E6 Terminology Relating to Methods of Mechanical Testing
3.2.9 x —measured or derived property.
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E122 Practice for Calculating Sample Size to Estimate,With
Specified Precision, the Average for a Characteristic of a
4. Summary of Test Method
Lot or Process
4.1 This test method consists of subjecting a honeycomb
E177 Practice for Use of the Terms Precision and Bias in
construction to a uniaxial tensile force parallel to the plane of
ASTM Test Methods
the honeycomb. The force is transmitted to the honeycomb
E456 Terminology Relating to Quality and Statistics
through pins, which are placed in cell rows on the top and
E1309 Guide for Identification of Fiber-Reinforced
bottom portions of one specimen.
Polymer-Matrix Composite Materials in Databases
4.2 The only acceptable failure mode for tensile-node bond
strength is the tensile failure of the node-to-node honeycomb
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bond within the body of the honeycomb specimen. Failure of
This test method is under the jurisdiction of ASTM Committee D30 on
Composite Materials and is the direct responsibility of Subcommittee D30.09 on
the honeycomb material at the loading pin location is not a
Sandwich Construction.
valid failure mode.
Current edition approved April 1, 2009. Published May 2009. Originally
approved in 1955. Last previous edition approved in 2000 as C363 – 00. DOI:
5. Significance and Use
10.1520/C0363_C0363M-09.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1 The honeycomb tensile-node bond strength is a funda-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
mental property than can be used in determining whether
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. honeycomb cores can be handled during cutting, machining
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C363/C363M − 09
and forming without the nodes breaking. The tensile-node
bond strength is the tensile stress that causes failure of the
honeycomb by rupture of the bond between the nodes. It is
usually a peeling-type failure.
5.2 This test method provides a standard method of ob
...