ASTM E990-09 - 1.11.2009
 
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

E874-19

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

E1091-21

Standard Specification for Nonmetallic Honeycomb Core for Use in Shelter Panels

E1749-18

Standard Terminology Relating to Rigid Wall Relocatable Shelters

E864-20

Standard Practice for Surface Preparation of Aluminum Alloys to Be Adhesively Bonded in Honeycomb Shelter Panels

E631-15

Standard Terminology of Building Constructions

D792-20

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

E865-20

Standard Specification for Structural Film Adhesives for Honeycomb Sandwich Panels

B209-14

Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

QQ-A-250/4

Aluminum Alloy 2024, Plate and Sheet

QQ-A-250/11d

Aluminum Alloy 6061T6, Plate and Sheet

QQ-A-250/8d

Aluminum Alloy 5052H34, Plate and Sheet

MIL-S-8802

Sealing Compound, Temperature-Resistant, Integral Fuel Tanks, and Fuel Cell Cavities, High-Adhesion

C393/C393M-20

Standard Test Method for Core Shear Properties of Sandwich Constructions by Beam Flexure