Integrated Methodology for Adhesive Bonded Joint Life Predictions.
Abstract
A comprehensive integrated methodology for adhesive bonded joint life predictions is outlined. While poorly made joints can fail at the adherend interface, properly made joints are far stronger, tending to fail by failure in the adhesive interlayer. The approach taken herein is that the useful life of bonded joints is determined by failure in the adhesive interlayer, and this is the basis for a systematic analysis of information and the techniques required to provide valid predictions. Emphasis is placed on time-dependent fracture mechanics procedures, including detailed through-the-adhesive thickness viscoelastic finite element calculations of the stress-strain distributions, and on analytical methods involving the constitutive relations of the adhesive interlayer. Use is made of instrumented bonded joint data obtained from structural overtest methods under a number of U.s. Air Force-sponsored programs. A logical program rationale is outlined which has sufficient generality to apply to any adhesive bonded joint structure including metal and composite adherends, various loading/environmental conditions, which apply to high-performance aircraft.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1982
- Accession Number
- ADA124324
Entities
People
- John Romanko
- K. M. Liechti
- W. G. Knauss
Organizations
- General Dynamics