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      ANALYSIS OF THE SENSITIVITY OF VISCOELASTIC PARAMETERS AT THE STRAIN-RATE OF A THERMOPLASTIC

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      ScienceOpen

      Viscoelastic ; Thermoplastic ; Strain-rate

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            Abstract

            The behavior of thermoplastics depends on several factors, mainly time and temperature. The present work is the subject of a study of the dependence of these materials on time. The material considered in this study is a polyamide 6. The applied behavior model is represented by the Kelvin-Voigt viscoelastic mechanism with instant elasticity. Following the mathematical formulation of the equations of the model, tensile tests at different strain rates are conducted. The model parameters are then identified. These being sensitive to the strain-rate, the relation which links them with it is established by means of an exponential regression. The experimental results and those obtained by the model are presented, compared and interpreted. Their relevance and coherence validates both the model and the approach adopted.

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            Author and article information

            Journal
            ScienceOpen
            25 April 2019
            Affiliations
            [1 ] University of Jijel
            [2 ] University of Biskra
            Article
            10.14293/S2199-1006.1.SOR-.PPUWR6G.v1
            bbd4ac43-8c91-4b6f-a0a0-35e80820a8bf

            This work has been published open access under Creative Commons Attribution License CC BY 4.0 , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conditions, terms of use and publishing policy can be found at www.scienceopen.com .

            Engineering, Materials science

            Viscoelastic ; Thermoplastic ; Strain-rate

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