ASTM C363/C363M-16

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: C363/C363M − 09 (Reapproved 2015) C363/C363M − 16
Standard Test Method for
1
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
1.1 This test method covers the determination of the tensile-node bond strength of honeycomb core materials.
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 may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance 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.
2. Referenced Documents
2
2.1 ASTM Standards:
3
C274 Terminology of Structural Sandwich Constructions (Withdrawn 2016)
D883 Terminology Relating to Plastics
D3878 Terminology for Composite Materials
D5229/D5229M Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite
Materials
E4 Practices for Force Verification of Testing Machines
E6 Terminology Relating to Methods of Mechanical Testing
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or
Process
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E1309 Guide for Identification of Fiber-Reinforced Polymer-Matrix Composite Materials in Databases (Withdrawn 2015)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.
Terminologycomposites, as C274 defineswell as terms relating to structural sandwich constructions. Terminology D883 defines
terms relating to plastics. Terminology E6 defines terms relating to mechanical testing. Terminology E456 and Practice E177 define
terms relating to statistics. In the event of a conflict between terms, Terminology D3878 shall have precedence over the other
Terminologies.
3.2 Symbols:
3.2.1 σ—tensile node strength, MPa [psi].
3.2.2 P—ultimate tensile force, N [lb].
3.2.3 b—initial width of specimen, mm [in.].
1
This test method is under the jurisdiction of ASTM Committee D30 on Composite Materials and is the direct responsibility of Subcommittee D30.09 on Sandwich
Construction.
Current edition approved July 1, 2015April 1, 2016. Published August 2015April 2016. Originally approved in 1955. Last previous edition approved in 20092015 as
C363 – 09.C363 – 09(2015). DOI: 10.1520/C0363_C0363M-09R15.10.1520/C0363_C0363M-16.
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

---------------------- Page: 1 ----------------------
C363/C363M − 16
3.2.4 t—thickness of specimen, mm [in.].
3.2.5 x¯—sample mean (average).
3.2.6 S —sample standard deviation.
n − 1
3.2.7 CV—sample coefficient of variation (in percent).
3.2.8 n—number of specimens.
3.2.9 x —measured or derived property.
1
4. Summary of Test Method
4.1 This test method consists of subjecting a honeycomb construction to a uniaxial tensile force parallel to the plane of the
honeycomb. The force is transmitted to the honeycomb through pins, which are placed in cell rows on the top and bottom portions
of one specimen.
4.2 The only acceptable failure mode for tensile-node bond strength is the tensile failure of the node-to-node honeycomb bond
within the body of the honeycomb specimen. Failure of the honeycomb material at the loading pin loca
...

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/C363M − 16
Standard Test Method for
1
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 relating to sandwich constructions. Terminology D883 defines
terms relating to plastics. Terminology E6 defines terms
1.1 This test method covers the determination of the tensile-
relating to mechanical testing. Terminology E456 and Practice
node bond strength of honeycomb core materials.
E177 define terms relating to statistics. In the event of a
1.2 The values stated in either SI units or inch-pound units
conflict between terms, Terminology D3878 shall have prece-
are to be regarded separately as standard. The values stated in
dence over the other Terminologies.
each system may not be exact equivalents; therefore, each
3.2 Symbols:
system shall be used independently of the other. Combining
3.2.1 σ—tensile node strength, MPa [psi].
values from the two systems may result in non-conformance
with the standard. 3.2.2 P—ultimate tensile force, N [lb].
1.3 This standard does not purport to address all of the 3.2.3 b—initial width of specimen, mm [in.].
safety concerns, if any, associated with its use. It is the
3.2.4 t—thickness of specimen, mm [in.].
responsibility of the user of this standard to establish appro-
3.2.5 x¯—sample mean (average).
priate safety and health practices and determine the applica-
3.2.6 S —sample standard deviation.
bility of regulatory limitations prior to use. n − 1
3.2.7 CV—sample coefficient of variation (in percent).
2. Referenced Documents
3.2.8 n—number of specimens.
2
2.1 ASTM Standards:
3.2.9 x —measured or derived property.
1
D883 Terminology Relating to Plastics
D3878 Terminology for Composite Materials
4. Summary of Test Method
D5229/D5229M Test Method for Moisture Absorption Prop-
erties and Equilibrium Conditioning of Polymer Matrix
4.1 This test method consists of subjecting a honeycomb
Composite Materials
construction to a uniaxial tensile force parallel to the plane of
E4 Practices for Force Verification of Testing Machines
the honeycomb. The force is transmitted to the honeycomb
E6 Terminology Relating to Methods of Mechanical Testing
through pins, which are placed in cell rows on the top and
E122 Practice for Calculating Sample Size to Estimate, With
bottom portions of one specimen.
Specified Precision, the Average for a Characteristic of a
4.2 The only acceptable failure mode for tensile-node bond
Lot or Process
strength is the tensile failure of the node-to-node honeycomb
E177 Practice for Use of the Terms Precision and Bias in
bond within the body of the honeycomb specimen. Failure of
ASTM Test Methods
the honeycomb material at the loading pin location is not a
E456 Terminology Relating to Quality and Statistics
valid failure mode.
3. Terminology
5. Significance and Use
3.1 Definitions—Terminology D3878 defines terms relating
5.1 The honeycomb tensile-node bond strength is a funda-
to high-modulus fibers and their composites, as well as terms
mental property than can be used in determining whether
honeycomb cores can be handled during cutting, machining
1
This test method is under the jurisdiction of ASTM Committee D30 on
and forming without the nodes breaking. The tensile-node
Composite Materials and is the direct responsibility of Subcommittee D30.09 on
Sandwich Construction.
bond strength is the tensile stress that causes failure of the
Current edition approved April 1, 2016. Published April 2016. Originally
honeycomb by rupture of the bond between the nodes. It is
approved in 1955. Last previous edition approved in 2015 as C363 – 09(2015). DOI:
usually a peeling-type failure.
10.1520/C0363_C0363M-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.2 This test method provides a standard method of obtain-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
ing tensile-node bond strength data for quality control, accep-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tance specification testing, and research and development.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C363/C363M − 16
6. Interferences
6.1 System Alignment—Excessive bending will cause pre-
mature failure. Every effort should be made to eliminate excess
bending from the test system. Bending may occur as a result of
misaligned grips, poor sp
...