Accession Number:

ADA008777

Title:

Mechanisms of Adhesion Failure between Polymers and Metallic Substrates: Aluminum 2024-T3 and Titanium 6Al-4V with HT424 Adhesive

Descriptive Note:

[Technical Report, Final Report]

Corporate Author:

ROCKWELL INTERNATIONAL CORP THOUSAND OAKS CA

Personal Author(s):

• Smith, Tennyson
• Kaelble, D. H.

Report Date:

1974-06-01

Pagination or Media Count:

240

Abstract:

The report describes a study of aluminum 2024-T3 alloy and titanium 6Al-4V alloy adherends, adhesively bonded with an epoxy HT424 adhesive. The adherend surface properties, after standard surface preparation treatments, were characterized with a number of surface tools. A study of bond strengths after adherend aging and bond aging in humidity chambers has been correlated with surface character. Comparison of surface character with bond failure has revealed probable failure mechanisms. It is demonstrated that mapping of surface prior to bonding can reveal areas that will have a predisposition to fail interfacially and how the mapping technique can be used as an non-destructive testing NDT tool for monitoring surfaces.

Descriptors:

Subject Categories:

• Couplers, Fasteners and Joints

Distribution Statement:

[A, Approved For Public Release]