Viscoelastic characterization of a thermoplastic elastomer processed through material extrusion
Objective. We aim to characterize the viscoelastic behavior of Polyether-Block-Amide (PEBA 90A), provide reference values for the parameters of a constitutive model for the simulation of mechanical behaviors, and paying attention to the influence of the manufacturing conditions. Methods. Uniaxial re...
| Autores: | ; ; ; ; ; |
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| Tipo de documento: | Artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/372507 |
| Acceso en línea: | https://hdl.handle.net/2117/372507 https://dx.doi.org/10.3390/polym14142914 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Polymers Viscoelasticity Mechanical properties PEBA Constitutive models Prony series Polímers Viscoelasticitat Àrees temàtiques de la UPC::Enginyeria mecànica |
| Sumario: | Objective. We aim to characterize the viscoelastic behavior of Polyether-Block-Amide (PEBA 90A), provide reference values for the parameters of a constitutive model for the simulation of mechanical behaviors, and paying attention to the influence of the manufacturing conditions. Methods. Uniaxial relaxation tests of filaments of PEBA were used to determine the values of the parameters of a Prony series for a Quasi-Linear Visco-Elastic (QLVE) model. Additional, fast cyclic loading tests were used to corroborate the adequacy of the model under different test criteria in a second test situation. Results. The QLVE model predicts the results of the relaxation tests very accurately. In addition, the behavior inferred from this model fits very well with the measurements of fast cyclic loading tests. The viscoelastic behavior of PEBA under small strain polymer fits very well to a six-parameter QLVE model. |
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