Accession Number:

AD0262716

Title:

ADHESIVES FOR BONDING ALUMINUM

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1961-06-01

Pagination or Media Count:

1.0

Abstract:

The tensile adhesive strengths of adhesivealuminum systems comprising five commercial epoxy adhesives and four aluminum alloys have been determined. Both standard lap-shear and NOL butt-joint specimens fabricated from 2024-T4 aluminum. The four different aluminum alloys were evaluated, using lap-shear specimens with two of the five adhesives. Both the lap-shear and buttjoint adherends were subjected to two types of surface preparation before assembly. One group was abraded with carborundum paper, and the other group was given an acid etch in addition to the abrasion. Before testing, the lap-shear specimens were exposed to two types of environmental conditioning, viz., normal conditioning and 28-day Jan cycling. In general, acid etching improved the tensile strengths of all the systems. V-Bond 214 adhesive produced the strongest joint. Jan cycling of the specimens caused a reduction in strength of from 40 to more than 60. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE