Modeling of Stress Relaxation and Creep Behaviour of Polyester Yarn used Fitting Data Method by using the Maxwell Model Modification Sequence

Abstract

Textile material especially yarn which is formed by polymer such as polyester has viscoelastic properties when deformation occurs. Viscoelastic is combination of elastic and viscous properties. Many research have been conducted to model viscoelastic on textile materials especially yarn. In this research modeling is done by fitting data through experiments which are then modeled with a theory of the modification of the Maxwell model as a reference in making predictions through the data fitting method. The result of prediction show as exponential curve with regression value that approaches the experimental curve (R² = 0,7639 and 0,9997).