Polymeric composite laminates are being increasingly employed to fabricate parts which must be designed to operate successfully in dynamic mechanical environments under various temperatures. Current computer-aided design tools are, however, generally restricted to the modeling of these materials at ambient room temperatures. In order to develop a set of experimental data for evaluating the predictive capabilities of new computer-aided design tools for predicting the elastodynamic response of engineering structural components operating under different temperature regimes, an experimental program was undertaken to study the elastodynamic response of E-glass/Epon cantilever specimens and AS-4 graphite/Epon cantilever specimens subjected to discrete ambient temperatures in the range of −10°F to 300°F at a constant relative humidity of 75 percent. Design charts demonstrating the variation of damping and the dynamic longitudinal elastic modulus were then plotted as a function of temperature for these specimens.

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