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

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.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1974
Accession Number
ADA008777

Entities

People

  • D. H. Kaelble
  • Tennyson Smith

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Adhesion
  • Auger Electrons
  • Chemical Properties
  • Chemical Synthesis
  • Chemistry
  • Crystal Structure
  • Failure Mode And Effect Analysis
  • Materials
  • Materials Laboratories
  • Materials Science
  • Measurement
  • Optical Properties
  • Oxide Films
  • Refractive Index
  • Surface Chemistry
  • Surface Properties
  • Titanium

Fields of Study

  • Materials science

Readers

  • Structural Health Monitoring of Composite Structures.
  • Thin Film Deposition Science.