Abstract
ABSTRACT Viscoelastic behavior is an important parameter for the use of natural fibers in technical applications. Mathematical models to describe the relaxation and creep behavior of Ensete fibers were investigated. The aim of the experiment was to describe the short-term creep and relaxation behavior under tension loading. The fibers of Ensete ventricosum, originally from Ethiopian region Hawasa, were used in this experiment. Moisture content Mc = 8.54 ± 0.42% (d. b.) of the samples were determined. The viscoelastic tests were performed at six load levels (15, 30, 45, 60, 75, and 90% of yarn breaking load). Measured values of the relaxation and creep behavior were fitted to the mathematical models. The results show that generalized Maxwell model and Kelvin-Voight model with two branches can be used to describe relaxation and creep behavior of Ensete fibers.
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