Abstract
The present work deals with the effect of interface pressure on the stress and fracture analysis of carbon-epoxy dual jacketed pressure vessels at elevated temperatures. Pre-stress and firing stress is determined for an initial residual interface pressure applied between liner and jacket. The effect of a uniform 100℃ temperature rises above ambient had mixed results for a carbon-epoxy jacketed vessel, due to the differential thermal expansion. While jacket stresses increased moderately and further exceeded typical material strengths, liner stresses decreased significantly and improved structural integrity. The effect of a temperature rise for a steel jacketed vessel was deleterious. Jacket stresses decreased, but with no effect on structural integrity, while liner stresses increased, to the detriment of integrity.
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