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The prediction of life for quasi-isotropic graphite/epoxy and graphite/PEEK laminates was carried out by utilizing the data obtained from short term creep tests at elevated temperatures. Curve-fit equations and numerical techniques were developed for the efficient life evaluation of the polymer composites. A microcomputer-based test system for automatic creep testing and analysis was developed. The time and temperature dependent response of the composites seems to correlate well with the master curve obtained by using the short term creep data together with a numerical curve fit program. (Author)