Abstract
The objective of this study is to apply the time-temperature superposition principle (TTSP) to the viscoelastic material functions that exhibit a large degree of variability to predict the long-term behavior of a vinyl ester polymer (Derakane 441–400). Short-term tensile creep experiments were conducted at three temperatures below the glass transition temperature. Strain measurements in the longitudinal and transverse directions were measured simultaneously using the digital image correlation technique. The creep compliance functions were characterized using the generalized viscoelastic constitutive equation with a Prony series representation. The Weibull probability density functions (PDFs) of the creep compliance functions were obtained for each test configuration and found to be time and temperature dependent. Creep compliance curves at constant probabilities were obtained and used to develop the master curves for a reference temperature of 24 °C using the TTSP.
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Simsiriwong, J., Sullivan, R.W., Hilton, H.H. (2014). Master Creep Compliance Curve for Random Viscoelastic Material Properties. In: Antoun, B., et al. Challenges In Mechanics of Time-Dependent Materials and Processes in Conventional and Multifunctional Materials, Volume 2. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-00852-3_6
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DOI: https://doi.org/10.1007/978-3-319-00852-3_6
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