ASTM C363-00

Standard Test Method for Delamination Strength of Honeycomb Core Materials

SIGNIFICANCE AND USE
The honeycomb node bond strength is a fundamental property than can be used in determining whether honeycomb cores can be handled during cutting, machining and forming without the nodes breaking. The node bond strength is the tensile load that causes failure of the honeycomb by rupture of the bond between the nodes. It is usually a peeling-type failure.
This test method provides a standard method of obtaining honeycomb core node strength data for quality control, acceptance specification testing, and research and development.
SCOPE
1.1 This test method covers the determination of the delamination strength (node bond strength) of honeycomb core materials.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given may be approximate.
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.

General Information

• Status: Historical
• Publication Date: 09-Jan-2000
• ICS: 83.120 - Reinforced plastics
• Technical Committee: D30 - Composite Materials
• Drafting Committee: D30.09 - Sandwich Construction

Relations

• Replaced By: ASTM C363/C363M-09 - Standard Test Method for Node Tensile Strength of Honeycomb Core Materials
• Effective Date: 01-Apr-2009
• Referred By: ASTM C481-99(2016) - Standard Test Method for Laboratory Aging of Sandwich Constructions
• Effective Date: 10-Jan-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C363–00
Standard Test Method for
Delamination Strength of Honeycomb Core Materials
This standard is issued under the fixed designation C 363; 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 4.2 Grips, of multiple-pin type.
4.3 Micrometer, gage, or caliper, capable of measuring
1.1 This test method covers the determination of the delami-
accurately to 0.025 mm (0.001 in.).
nation strength (tensile node-to-node bond strength) of honey-
comb core materials.
5. Test Specimens
1.2 The values stated in SI units are to be regarded as the
5.1 The test specimens shall be 130 mm (5 in.) wide by 260
standard. The inch-pound units given may be approximate.
mm (10 in.) long with a test section outside the grips of 200
1.3 This standard does not purport to address all of the
mm (8 in.). The specimen width shall be parallel to the node
safety concerns, if any, associated with its use. It is the
bond areas. The thickness of the core slice shall be 12 mm
responsibility of the user of this standard to establish appro-
(0.500 in.) for nonmetallic cores and 16 mm (0.625 in.) for
priate safety and health practices and determine the applica-
metallic cores.
bility of regulatory limitations prior to use.
5.2 The number of test specimens and the method of their
2. Referenced Documents selection depend on the purpose of the particular test under
consideration, and no general rule can be given to cover all
2.1 ASTM Standards:
cases. However, when specimens are to be used for acceptance
E 4 Practices for Force Verification of Testing Machines
tests, at least five specimens shall be tested, and these speci-
3. Significance and Use mens shall be selected from that portion of the material which
appears to have a maximum of distorted cells or misalignment
3.1 The honeycomb node bond strength is a fundamental
of bond areas.
property than can be used in determining whether honeycomb
cores can be handled during cutting, machining and forming
6. Conditioning
without the nodes breaking. The node bond strength is the
6.1 The test specimens may be subjected to any desired
tensile load that causes failure of the honeycomb by rupture of
condition before testing. For example, immersion in boiling
the bond between the nodes. It is usually a peeling-type failure.
water or immersion in solvents.
3.2 This test method provides a standard method of obtain-
ing honeycomb core node strength data for quality control,
7. Procedure
acceptance specification testing, and research and develop-
7.1 Measure the specimen dimensions to the nearest 0.25
ment.
mm (0.01 in.).
4. Apparatus 7.2 Select pins with the largest diameters that will easily fit
into the honeycomb cells.
4.1 Test machine, capable of maintaining a controlled load-
7.3 Placethepinsincellrowsinthetopandbottomportions
ing rate and indicating the load with an accuracy of 61%of
of the specimen.
the indicated value. The accuracy of the test machine shall be
7.4 Fig. 1 shows a fixture that ha
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