Thermal effects on fibre optic pressure sensor during free piston compression experiments

Sharifian, S. A. and Buttsworth, D. R. (2005) Thermal effects on fibre optic pressure sensor during free piston compression experiments. In: 8th International Symposium on Fluid Control, Measurement and Visualization (8th FLUCOME), 22-25 Aug 2005, Chengdu, China.


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Experiments in the study of transient aerodynamics typically require pressure measurements with a high spatial and temporal resolution. Inexpensive pressure sensors based on extrinsic Fabry-Perot fibre optic interferometry are capable of measurement with a high spatial and temporal resolution. However, previous work has shown that such fibre optic pressure sensors are very sensitive to temperature.We use an engineering software package (ANSYS) to model the thermal effects in the sensor for the reflected shock conditions. Our results indicate that the fibre optic pressure sensors can be employed in the shock tube without any shielding for 20 ms with reasonable accuracy. However, unshielded sensors in high pressure and temperature conditions will not produce accurate measurements, nor will they survive multiple experiments.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Depositing User: Dr Ahmad Sharifian-Barforoush
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 31 Mar 2008 11:23
Last Modified: 30 Sep 2013 23:43
Uncontrolled Keywords: fibre optic pressure sensor, shock experiments, temperature sensitivity.
Fields of Research : 09 Engineering > 0901 Aerospace Engineering > 090199 Aerospace Engineering not elsewhere classified

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