A comparison of viscoelastic behavior of engineering elastomers under different stress and temperature



Título del documento: A comparison of viscoelastic behavior of engineering elastomers under different stress and temperature
Revista: Revista mexicana de física
Base de datos:
Número de sistema: 000592450
ISSN: 0035-001X
Autores: 1
1
2
3
1
Instituciones: 1Universidad Politécnica de Pachuca, Departamento de Mecatrónica, Zempoala, Hidalgo. México
2Instituto Politécnico Nacional, Escuela Superior de Ingeniería Mecánica y Eléctrica, Ciudad de Mexico. México
3Instituto Tecnológico y de Estudios Superiores de Monterrey, Escuela de Ingeniería y Ciencias, Monterrey, Nuevo León. México
Año:
Periodo: May-Jun
Volumen: 69
Número: 3
País: México
Idioma: Inglés
Tipo de documento: Artículo
Resumen en inglés In this work, a comparison of the viscoelastic creep behavior of five engineering elastomers (Ethylene-Propylene-Diene Monomer, Flouroelastomer, nitrile butadiene rubber, silicon rubber and neoprene/chloroprene rubber) is presented. Creep tests at different stress levels and temperatures were conducted using a “home-built” creep test device. A commercial equipment of Digital Image Correlation technique was implemented for the measurement of the time-dependent strains. The linear viscoelastic behavior regimes were determined by evaluating the creep compliance for each stress and temperature condition. Then, the creep curves obtained were fitted to a characteristic creep model, enabling the calculation of the viscoelastic parameters of each material. It was observed that the tested elastomers exhibited different elastic and viscous parameters, which were found to decrease with temperature. Particularly, it was observed that silicon rubber showed large instantaneous (elastic) strain and a small viscous deformation, whereas the Flouroelastomer rubber exhibited moderate strain curves, even at very high temperatures (100°C and 120°C), showing the highest creep resistance and the wider regime of linear viscoelastic behavior.
Disciplinas: Física y astronomía
Palabras clave: Física de materia condensada
Keyword: Creep strain,
Elastomers,
Viscoelastic parameters,
Linear viscoelasticity,
DIC,
Condensed matter physics
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