ASTM E1091-21

Standard Specification for Nonmetallic Honeycomb Core for Use in Shelter Panels

ABSTRACT
This specification is for nonmetallic honeycomb core used in the manufacture of adhesively bonded sandwich panels for tactical shelters. Five types of nonmetallic honeycomb material are specified: type I - honeycomb for use in panels which are required to have a high load-carrying capability that could not be adequately met using any of the other type; type II - honeycomb for use in panels which are required to have a load-carrying capability that could not be adequately met by using materials of any of types III, IV, or V; type III - honeycomb for general use in panels where the higher performances of types I, II, and IV materials are not required; type IV - honeycomb similar to type II but with slightly lower performance; and type V - honeycomb similar to type III but with slightly lower performance. The density, honeycomb core shear, honeycomb core compression, honeycomb core cyclic aging, honeycomb core brittleness impact, flatwise tensile, and pH shall be tested to meet the requirements prescribed. The fungus resistance test, thermal resistance test, shear modulus test, core compressive modulus test, water migration resistance test, flame resistance test, and dimensional examination shall be performed to meet the requirements prescribed.
SCOPE
1.1 This specification is for nonmetallic honeycomb core used in the manufacture of adhesively bonded sandwich panels for tactical shelters. The materials are intended for adhesive bonding to aluminum facings using materials and processes defined by Practices E864 and E874, and Specifications E865, E866, and E990. This specification covers five main types of honeycomb for use in sandwich panels, Types I, II, III, IV, and V. Types I, II, and III honeycombs correspond to three honeycomb densities. Types IV and V are similar to Types II and III, respectively, but have lower performance requirements.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. For conversion of quantities in various systems of measurement to SI units, refer to Practice E380.  
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.

General Information

• Status: Published
• Publication Date: 31-Jan-2021
• ICS: 91.060.20 - Roofs
• Technical Committee: E06 - Performance of Buildings
• Drafting Committee: E06.53 - Materials and Processes for Durable Rigidwall Relocatable Structures

Standards Content (Sample)

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:E1091 −21
Standard Specification for
1
Nonmetallic Honeycomb Core for Use in Shelter Panels
This standard is issued under the fixed designation E1091; 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 B209 Specification for Aluminum and Aluminum-Alloy
Sheet and Plate
1.1 This specification is for nonmetallic honeycomb core
C177 Test Method for Steady-State Heat Flux Measure-
used in the manufacture of adhesively bonded sandwich panels
ments and Thermal Transmission Properties by Means of
for tactical shelters. The materials are intended for adhesive
the Guarded-Hot-Plate Apparatus
bonding to aluminum facings using materials and processes
C366/C366M Test Methods for Measurement of Thickness
defined by Practices E864 and E874, and Specifications E865,
of Sandwich Cores
E866, and E990. This specification covers five main types of
C481 Test Method for Laboratory Aging of Sandwich Con-
honeycomb for use in sandwich panels, Types I, II, III, IV, and
structions
V. Types I, II, and III honeycombs correspond to three
C518 Test Method for Steady-State Thermal Transmission
honeycomb densities. Types IV and V are similar to Types II
Properties by Means of the Heat Flow Meter Apparatus
and III, respectively, but have lower performance require-
E380 Practice for Use of the International System of Units
ments.
3
(SI) (the Modernized Metric System) (Withdrawn 1997)
1.2 The values stated in inch-pound units are to be regarded
E631 Terminology of Building Constructions
as standard. The values given in parentheses are mathematical
E864 Practice for Surface Preparation of Aluminum Alloys
conversions to SI units that are provided for information only
to Be Adhesively Bonded in Honeycomb Shelter Panels
andarenotconsideredstandard.Forconversionofquantitiesin
E865 Specification for Structural Film Adhesives for Hon-
various systems of measurement to SI units, refer to Practice
eycomb Sandwich Panels
E380.
E866 Specification for Corrosion-Inhibiting Adhesive
1.3 This standard does not purport to address all of the Primer forAluminumAlloys to BeAdhesively Bonded in
safety concerns, if any, associated with its use. It is the
Honeycomb Shelter Panels
responsibility of the user of this standard to establish appro-
E874 Practice for Adhesive Bonding of Aluminum Facings
priate safety, health, and environmental practices and deter- to Nonmetallic Honeycomb Core for Shelter Panels
mine the applicability of regulatory limitations prior to use.
E990 Specification for Core-Splice Adhesive for Honey-
1.4 This international standard was developed in accor- comb Sandwich Structural Panels
dance with internationally recognized principles on standard-
E1749 Terminology Relating to Rigid Wall Relocatable
ization established in the Decision on Principles for the Shelters
Development of International Standards, Guides and Recom-
F501 Test Method for Aerospace Materials Response to
mendations issued by the World Trade Organization Technical Flame, with Vertical Test Specimen (for Aerospace Ve-
3
Barriers to Trade (TBT) Committee.
hicles Standard Conditions) (Withdrawn 1998)
4
2.2 Federal Aviation Regulation:
2. Referenced Documents
FAR 25.853(a) Compartment Interiors
2
5
2.1 ASTM Standards:
2.3 Federal Standards:
FED-STD-191A Textile Test Methods
QQ-A-250/8 Aluminum Alloy 5052, Plate and Sheet
1
This specification is under the jurisdiction of ASTM Committee E06 on
QQ-A-250/11 Aluminum Alloy 6061, Plate and Sheet
PerformanceofBuildingsandisthedirectresponsibilityofSubcommitteeE06.53on
Materials and Processes for Durable Rigidwall Relocatable Structures.
Current edition approved Feb. 1, 2021. Published February 2021. Originally
3
approved in 1986. Last previous edition approved in 2013 as E1091 – 13. DOI: The last approved version of this historical standard is referenced on
10.1520/E1091-21. www.astm.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Federal Aviation Administration (FAA), 800 Independence
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Ave., SW, Washington, DC 20591, http://www.faa.gov.
5
Standards volume information, refer to the standard’s Document Summary page on Available from DLA Document Services, Building 4/D, 700 Robbins Avenue,
the ASTM website. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil
...

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: E1091 − 13 E1091 − 21
Standard Specification for
1
Nonmetallic Honeycomb Core for Use in Shelter Panels
This standard is issued under the fixed designation E1091; 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 specification is for nonmetallic honeycomb core used in the manufacture of adhesively bonded sandwich panels for
tactical shelters. The materials are intended for adhesive bonding to aluminum facings using materials and processes defined by
Practices E864 and E874, and Specifications E865, E866, and E990. This specification covers five main types of honeycomb for
use in sandwich panels, Types I, II, III, IV, and V. Types I, II, and III honeycombs correspond to three honeycomb densities. Types
IV and V are similar to Types II and III, respectively, but have lower performance requirements.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard. For conversion of quantities in
various systems of measurement to SI units, refer to Practice E380.
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:
B209 Specification for Aluminum and Aluminum-Alloy Sheet and Plate
C177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the
Guarded-Hot-Plate Apparatus
C366/C366M Test Methods for Measurement of Thickness of Sandwich Cores
C481 Test Method for Laboratory Aging of Sandwich Constructions
C518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
3
E380 Practice for Use of the International System of Units (SI) (the Modernized Metric System) (Withdrawn 1997)
E631 Terminology of Building Constructions
E864 Practice for Surface Preparation of Aluminum Alloys to Be Adhesively Bonded in Honeycomb Shelter Panels
E865 Specification for Structural Film Adhesives for Honeycomb Sandwich Panels
1
This specification is under the jurisdiction of ASTM Committee E06 on Performance of Buildingsand is the direct responsibility of Subcommittee E06.53 on Materials
and Processes for Durable Rigidwall Relocatable Structures.
Current edition approved Oct. 1, 2013Feb. 1, 2021. Published February 2014February 2021. Originally approved in 1986. Last previous edition approved in 20082013
as E1091 – 08.E1091 – 13. DOI: 10.1520/E1091-13.10.1520/E1091-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E1091 − 21
E866 Specification for Corrosion-Inhibiting Adhesive Primer for Aluminum Alloys to Be Adhesively Bonded in Honeycomb
Shelter Panels
E874 Practice for Adhesive Bonding of Aluminum Facings to Nonmetallic Honeycomb Core for Shelter Panels
E990 Specification for Core-Splice Adhesive for Honeycomb Sandwich Structural Panels
E1749 Terminology Relating to Rigid Wall Relocatable Shelters
F501 Test Method for Aerospace Materials Response to Flame, with Vertical Test Specimen (for Aerospace Vehicles Standard
3
Conditions) (Withdrawn 1998)
4
2.2 Federal Aviation Regulation:
FAR 25.853(a) Compartment Interiors
5
2.3 Fe
...