A report describes an experimental study undertaken to verify a finite-element mathematical model used to predict residual stresses and stress-induced failures in the adhesive interfacial layers (bondlines) that join phenolic liners to interior surfaces of metal housings of reusable solid rocket motors (RSRMs). The model reflects the three-dimensional complexity of the stress fields in question and includes time- and temperature-dependent constitutive and failure properties of the adhesive material, which exhibits nonlinear viscoelasticity.

This report was done by David E. Richardson, Bradley R. Hoskins, Theodore J. Lewis, and Alan V. Palumbos of Thiokol Corp. for Marshall Space Flight Center. To obtain a copy of the report, "Verification of Finite Element Predictions of Residual Stress Bondline Failures in a Full-Scale Test Article," please contact Jim Ekstrom at This email address is being protected from spambots. You need JavaScript enabled to view it..


NASA Tech Briefs Magazine

This article first appeared in the November, 2001 issue of NASA Tech Briefs Magazine.

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