3D flexible NiTi-braided elastomer composites for smart structure applications
| Autor: | Petr Šittner, Luděk Heller, H Finckh, David Vokoun |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
010302 applied physics
Materials science 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Elastomer 01 natural sciences Atomic and Molecular Physics and Optics Damping capacity Elastomer composites Mechanics of Materials Energy absorption Nickel titanium 0103 physical sciences Signal Processing Ultimate tensile strength General Materials Science Experimental work Electrical and Electronic Engineering Composite material 0210 nano-technology Quasistatic process Civil and Structural Engineering |
| Zdroj: | Smart Materials and Structures |
| ISSN: | 1361-665X 0964-1726 |
| DOI: | 10.1088/0964-1726/21/4/045016 |
| Popis: | While outstanding functional properties of thin NiTi wires are nowadays well recognized and beneficially utilized in medical NiTi devices, development of 2D/3D wire structures made out of these NiTi wires remains challenging and mostly unexplored. The research is driven by the idea of creating novel 2D/3D smart structures which inherit the functional properties of NiTi wires and actively utilize geometrical deformations within the structure to create new/improved functional properties. Generally, textile technology provides attractive processing methods for manufacturing 2D/3D smart structures made out of NiTi wires. Such structures may be beneficially combined with soft elastomers to create smart deformable composites. Following this route, we carried out experimental work focused on development of 3D flexible NiTi-braided elastomer composites involving their design, laboratory manufacture and thermomechanical testing. We describe the manufacturing technology and structural properties of these composites; and perform thermomechanical tests on the composites, focusing particularly on quasistatic tensile properties, energy absorption, damping and actuation under tensile loading. Functional thermomechanical properties of the composites are discussed with regard to the mechanical properties of the components and architecture of the composites. It is found that the composites indeed inherit all important features of the thermomechanical behavior of NiTi wires but, due to their internal architecture, outperform single NiTi wires in some features such as the magnitude of recoverable strain, superelastic damping capacity and thermally induced actuation strain. |
| Databáze: | OpenAIRE |
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