Rheometric, transient, and cyclic tests to assess the viscoelastic behavior of natural rubber-based compounds used for rubber bearings
| Autor: | Ricardo Moreno Sánchez, Manuel Alberto Guzmán Sánchez, Diego Hernán Giraldo-Vásquez |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Compression set 02 engineering and technology Carbon black 010402 general chemistry 021001 nanoscience & nanotechnology Elastomer 01 natural sciences Viscoelasticity 0104 chemical sciences Damping capacity Natural rubber Mechanics of Materials visual_art Ultimate tensile strength Materials Chemistry visual_art.visual_art_medium General Materials Science Composite material 0210 nano-technology Curing (chemistry) |
| Zdroj: | Materials Today Communications. 22:100815 |
| ISSN: | 2352-4928 |
| DOI: | 10.1016/j.mtcomm.2019.100815 |
| Popis: | The damping capacity of rubber bearings used as passive energy dissipators in bridges, buildings, and power generation plants is defined by the characteristic viscoelastic behavior of elastomers. Therefore, in this study, the viscoelastic behavior of natural rubber-based compounds used in rubber bearings with different content of carbon black is evaluated. Rheometric tests were performed to study the damping properties and curing parameters of the compounds. Transient tests, which are representative of the operating conditions of rubber bearings, were carried out to study the isochronous stress-strain relation evidencing a non-linear behavior under specific deformation states. Compression, shear, and tensile tests exhibited time-dependent mechanical properties. Moreover, energy dissipation in compression and shear increased for the higher carbon black content compound. Compression set exhibited permanent deformation of the compounds tested at accelerated temperature conditions. Experimental results obtained in this work have great importance for designers in order to evaluate the damping and mechanical behavior of natural rubber compounds related to rubber bearings performance. |
| Databáze: | OpenAIRE |
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