Temperature impact on the mechanical and fatigue behavior of a non-crystallizing rubber
| Autor: | Stefan Robin, Alfred Wondracek, Gerald Pinter, Jacopo Schieppati, Bernd Schrittesser, Armin Holzner |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Arrhenius equation
Materials science Mechanical Engineering Stress–strain curve 02 engineering and technology Paris' law Physics::Classical Physics 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering Isothermal process Superposition principle symbols.namesake 020303 mechanical engineering & transports 0203 mechanical engineering Natural rubber Mechanics of Materials Modeling and Simulation visual_art Ultimate tensile strength Dynamic modulus visual_art.visual_art_medium symbols General Materials Science Composite material 0210 nano-technology |
| Zdroj: | International Journal of Fatigue. 144:106050 |
| ISSN: | 0142-1123 |
| Popis: | Temperature is one of the main parameters affecting the mechanical behavior of rubbers. The impact of this parameter is particularly important in the case of cyclic loads. In this study the mechanical and fatigue behavior of a carbon filled acrylonitrile butadiene rubber (NBR) was investigated. Tensile tests revealed a general decrease of the ultimate properties with temperature. Moreover, the maximum chain extensibility, evaluated through Mooney-Rivlin plots, showed a similar trend and a minimum at intermediate temperature. The dynamic properties of the material were investigated through DMA measurements. Temperature sweep revealed an Arrhenius dependence of the dynamic moduli for temperatures above Tg + 30 °C. Master curves of the dynamic properties were generated through the application of the time-temperature superposition principle, by shifting horizontally the isothermal frequency sweeps. The fatigue behavior at different temperature was assessed through the crack growth approach and a lower crack growth resistance was found at higher temperatures. Finally, a new procedure for building fatigue master curves has been investigated by exploiting the temperature dependence of the loss modulus. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect