Effect of strain rate and filler size on mechanical behavior of a Cu filled elastomer based composite
| Autor: | Dipali Sonawane, Praveen Kumar, Sudhi Oberoi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Polydimethylsiloxane Strain (chemistry) Composite number technology industry and agriculture General Engineering Materials Engineering (formerly Metallurgy) macromolecular substances 02 engineering and technology Strain rate Flow stress 010402 general chemistry 021001 nanoscience & nanotechnology Elastomer 01 natural sciences 0104 chemical sciences Strain energy chemistry.chemical_compound chemistry Ceramics and Composites Composite material Deformation (engineering) 0210 nano-technology |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 |
| Popis: | This work reports the effects of strain rate on mechanical behavior of polydimethylsiloxane (PDMS)based composites, prepared through inclusion of either micrometer or nanometer sized Cu particles into PDMS matrix. Pure PDMS and 5 vol % Cu-PDMS composites were cyclically loaded to a strain of 30% at a fixed strain rate, ranging from 1.0 x 10(-3) to 5.0 x 10(-1) s(-1), for several loading-unloading cycles. All samples showed significant strain rate sensitivity, revealing an increase in both the flow stress and the energy absorbed per cycle with strain rate. In addition, irrespective of strain rate, Cu-PDMS composites not only showed high strength, but also absorbed more energy per cycle as compared to pure PDMS. Furthermore, both the stress bearing and the strain energy absorption capacities of the composites increased significantly with a decrease in the filler size. A simple analytical model is developed to explain experimental results. (C) 2016 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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