Measurement of the high-temperature strain of UHTC materials using chemical composition gratings
| Autor: | Fabrizio Scarpa, Chong Du, Songhe Meng, Shiyu Huo, Tao Peng, Weihua Xie, Libin Wang, Hua Jin |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Strain and temperature 02 engineering and technology Substrate (electronics) engineering.material Chemical composition gratings 01 natural sciences Thermal expansion 010309 optics High-temperature application Optics 0103 physical sciences Thermal Ceramic Composite material Instrumentation Engineering (miscellaneous) Chemical composition business.industry Applied Mathematics Fibre optics sensors Atmospheric temperature range 021001 nanoscience & nanotechnology Ultra-high-temperature ceramics Wavelength visual_art visual_art.visual_art_medium engineering Ultra-high temperature ceramics 0210 nano-technology business |
| Zdroj: | Xie, W, Meng, S, Jin, H, Du, C, Wang, L, Peng, T, Scarpa, F & Huo, S 2016, ' Measurement of the high-temperature strain of UHTC materials using chemical composition gratings ', Measurement Science and Technology, vol. 27, no. 5, 055101 . https://doi.org/10.1088/0957-0233/27/5/055101 |
| DOI: | 10.1088/0957-0233/27/5/055101 |
| Popis: | This paper proposes a simple bonding and measuring technique to realise silica-based chemical composition gratings' (CCGs) high temperature applications on hot structures. We describe a series of experiments on CCGs to measure the thermal and mechanical response characteristics of ultra-high temperature ceramic (UHTC) materials when the maximum temperature is above 1000 °C. Response characteristics are obtained at the heating and cooling stages. Results show that the wavelength response of the CCGs bonded on the UHTC plate increases non-linearly with increasing temperatures, but decreases almost linearly with decreasing temperatures. The temperature-dependent strain transfer coefficients are calculated theoretically and experimentally; results show that the values of strain transfer coefficients below 1000 °C are significantly affected by the thermal expansion coefficient of the substrate material and the interface. The strain transfer coefficient value tends to vary slowly between 0.616 and 0.626 above 700 °C. |
| Databáze: | OpenAIRE |
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