Laser-machined microcavities for simultaneous measurement of high-temperature and high-pressure
| Autor: | Ya Huang, Liu Shan, Yunjiang Rao, Zengling Ran, Luo Shucheng, Haihong Bao, Yang Huiqin, Wang Yanjun, Qin Liu |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Optical fiber Hot Temperature Composite number Analytical chemistry lcsh:Chemical technology Biochemistry Article Analytical Chemistry law.invention law Thermal simultaneous measurement Pressure Fiber Optic Technology lcsh:TP1-1185 Fiber Electrical and Electronic Engineering Composite material Instrumentation laser micromachining Lasers Equipment Design Laser Atomic and Molecular Physics and Optics Pressure vessel Equipment Failure Analysis high pressure sensing micro-cavity Head (vessel) high temperature sensing |
| Zdroj: | Sensors (Basel, Switzerland) Sensors Volume 14 Issue 8 Pages 14330-14338 Sensors, Vol 14, Iss 8, Pp 14330-14338 (2014) |
| ISSN: | 1424-8220 |
| Popis: | Laser-machined microcavities for simultaneous measurement of high-temperature and high-pressure are demonstrated. These two cascaded microcavities are an air cavity and a composite cavity including a section of fiber and an air cavity. They are both placed into a pressure chamber inside a furnace to perform simultaneous pressure and high-temperature tests. The thermal and pressure coefficients of the short air cavity are ~0.0779 nm/°C and ~1.14 nm/MPa, respectively. The thermal and pressure coefficients of the composite cavity are ~32.3 nm/°C and ~24.4 nm/MPa, respectively. The sensor could be used to separate temperature and pressure due to their different thermal and pressure coefficients. The excellent feature of such a sensor head is that it can withstand high temperatures of up to 400 °C and achieve precise measurement of high-pressure under high temperature conditions. |
| Databáze: | OpenAIRE |
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