Abstract

This specification covers the requirements for core-splice adhesive for use with nonmetallic honeycomb cores in the fabrication of honeycomb sandwich panels used in relocatable structures. The adhesive shall be thermosetting, of film form, and capable of expanding to several times its original thickness and shall be cured at specific curing time, temperature, and pressure. Materials shall be tested for physical properties qualification which shall conform to water migration, volatility, expansion, sag, density, flexural shear strength or assembly compatibility, and tube shear or core splice integrity requirements. The adhesive shall be suitable for application to core material, edge members, and integral parts.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers core-splice adhesive for use with nonmetallic honeycomb cores in the fabrication of honeycomb sandwich panels used in relocatable structures. The adhesive shall be used for new production or depot repair. The adhesive shall be suitable for forming bonds that can withstand long combinations of stress, temperature, and relative humidity expected to be encountered in service. The adhesive shall be used for bonding core segments and for bonding core segments to edge members and to integral members in a honeycomb sandwich panel. The adhesive shall not allow the transfer of water from one part of the panel to another either through or along the line of the adhesive.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 The following precautionary caveat pertains only to the test method portion, Section 5, of this specification: 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

B209 Specification for Aluminum and Aluminum-Alloy Sheet and Plate

C393 Test Method for Flexural Properties of Sandwich Constructions

D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement

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

E874 Practice for Adhesive Bonding of Aluminum Facings to Nonmetallic Honeycomb Core for Shelter Panels

E1091 Specification for Nonmetallic Honeycomb Core for Use in Shelter Panels

Federal Standards

Military Standards

Keywords

adhesive; core splice; honeycomb; panel; relocatable structure; sandwich panel; structure; Adhesives--specifications; Adhesives (honeycomb core sandwich panels); Bonding--honeycomb core sandwich panels; Core sandwich panels; Core splice adhesives; Honeycomb shelter panels--specifications; Relocatable shelters--specifications; Shear testing--building materials; Shelters--specifications; Structural sandwich constructions--specifications; Tube shear test; Volatility; Water migration;

ICS Code

ICS Number Code 83.180 (Adhesives)

DOI: 10.1520/E0990-09

ASTM International is a member of CrossRef.

ASTM E990