Analytical Approximation of Relaxation Time Spectrum from Dynamic Creep Compliance 


Vol. 51,  No. 5, pp. 230-234, Oct.  2014
10.12772/TSE.2014.51.230


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  Abstract

The relaxation time spectrum is a very effective parameter for transforming material functions even with a limited amount of data. The spectrum also helps in understanding the relaxation behavior of polymers at the molecular scale. In this study, a relaxation time spectrum based on Marin-Graessley’s dynamic compliance model was calculated using Fuosso-Kirkwood’s complex analysis. The resulting model could successfully describe the viscoelastic behavior of mono-disperse polystyrene. However, it was clear that a more effective numerical analysis method was needed to obtain more accurate parameter values.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)