ASTM_E_1091_-_13.pdf

Designation:E109113Standard Specification forNonmetallic Honeycomb Core for Use in Shelter Panels1This standard is issued under the fixed designation E1091;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript 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.Scope1.1 This specification is for nonmetallic honeycomb coreused in the manufacture of adhesively bonded sandwich panelsfor tactical shelters.The materials are intended for adhesivebonding to aluminum facings using materials and processesdefined by Practices E864 and E874 and Specifications E865,E866,and E990.This specification covers five main types ofhoneycomb for use in sandwich panels,Types I,II,III,IV,andV.Types I,II,and III honeycombs correspond to threehoneycomb densities.Types IV and V are similar to Types IIand III,respectively,but have lower performance require-ments.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.For conversion of quantities invarious systems of measurement to SI units,refer to PracticeE380.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B209 Specification for Aluminum and Aluminum-AlloySheet and PlateC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC366/C366M Test Methods for Measurement of Thicknessof Sandwich CoresC481 Test Method for Laboratory Aging of Sandwich Con-structionsC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusE380 Practice for Use of the International System of Units(SI)(the Modernized Metric System)(Withdrawn 1997)3E631 Terminology of Building ConstructionsE864 Practice for Surface Preparation of Aluminum Alloysto Be Adhesively Bonded in Honeycomb Shelter PanelsE865 Specification for Structural Film Adhesives for Hon-eycomb Sandwich PanelsE866 Specification for Corrosion-Inhibiting AdhesivePrimer for Aluminum Alloys to Be Adhesively Bonded inHoneycomb Shelter PanelsE874 Practice for Adhesive Bonding of Aluminum Facingsto Nonmetallic Honeycomb Core for Shelter PanelsE990 Specification for Core-Splice Adhesive for Honey-comb Sandwich Structural PanelsE1749 Terminology Relating to Rigid Wall RelocatableSheltersF501 Test Method for Aerospace Materials Response toFlame,with Vertical Test Specimen(for Aerospace Ve-hicles Standard Conditions)(Withdrawn 1998)32.2 Federal Aviation Regulation:4FAR 25.853(a)Compartment Interiors2.3 Federal Standards:5FED-STD-191A Textile Test MethodsQQ-A-250/8 Aluminum Alloy 5052,Plate and SheetQQ-A-250/11 Aluminum Alloy 6061,Plate and Sheet2.4 Military Standards:5MIL-STD-105 Sampling Procedures and Tables for Inspec-tion by AttributesMIL-STD-129 Marking for Shipment and StorageMIL-STD-401 Sandwich Constructions and Core Materials;General Test Methods1This specification is under the jurisdiction of ASTM Committee E06 onPerformance of Buildingsand is the direct responsibility of Subcommittee E06.53 onMaterials and Processes for Durable Rigidwall Relocatable Structures.Current edition approved Oct.1,2013.Published February 2014.Originallyapproved in 1986.Last previous edition approved in 2008 as E1091 08.DOI:10.1520/E1091-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Federal Aviation Administration(FAA),800 IndependenceAve.,SW,Washington,DC 20591,http:/www.faa.gov.5Available from DLA Document Services,Building 4/D,700 Robbins Avenue,Philadelphia,PA 19111-5094,http:/quicksearch.dla.mil/.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.5 TAPPI Standard:6T 435-SU-68 Test Method for Hydrogen Ion Concentrationof Paper Extracts,Hot Extraction Method2.6 Other Publications:Uniform Freight Classification7National Motor Freight Classification83.Terminology3.1 DefinitionsSee Terminologies E631 and E1749 fordefinitions of terms used in this specification.3.2 Descriptions of Terms Specific To This Standard:3.2.1 block,na single production unit of honeycombbefore slicing.3.2.2 cell size,nthe average dista