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High temperature monitoring using a novel fiber optic ultrasonic sensing system
Author(s): Jingcheng Zhou; Xu Guo; Cong Du; Nan Wu; Tong Ma; Yuqian Liu; Chengyu Cao; Xingwei Wang
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Paper Abstract

This paper presents a novel fiber optic ultrasonic sensing system to measure high temperature in the air. Traveling velocity of sound in a medium is proportional to medium’s temperature. The fiber optic ultrasonic sensing system was applied to measure the change of sound velocity. A fiber optic ultrasonic generator and a Fabry-Perot fiber sensor were used as the signal generator and receiver, respectively. A carbon black- Polydimethylsiloxane (PDMS) material was utilized as the photoacoustic material for the fiber optic ultrasonic generator. A water cooling system was applied to cool down the photoacoustic material. A test was performed at lab furnace environment (up to 700 ℃). The sensing system survived 700℃. It successfully detect the ultrasonic signal and got the temperature measurements. The test results agreed with the reference sensor data. The paper validated the high temperature measurement capability of the novel fiber optic ultrasonic sensing system. The fiber optic ultrasonic sensing system could have broad applications. One example is that it could serve as acoustic pyrometers for 3D temperature distribution reconstruction in an industrial combustion facility

Paper Details

Date Published: 8 May 2018
PDF: 8 pages
Proc. SPIE 10639, Micro- and Nanotechnology Sensors, Systems, and Applications X, 1063910 (8 May 2018); doi: 10.1117/12.2305631
Show Author Affiliations
Jingcheng Zhou, Univ. of Massachusetts Lowell (United States)
Xu Guo, Univ. of Massachusetts Lowell (United States)
Cong Du, Univ. of Massachusetts Lowell (United States)
Nan Wu, Univ. of Massachusetts Lowell (United States)
Tong Ma, Univ. of Connecticut (United States)
Yuqian Liu, Univ. of Connecticut (United States)
Chengyu Cao, Univ. of Connecticut (United States)
Xingwei Wang, Univ. of Massachusetts Lowell (United States)


Published in SPIE Proceedings Vol. 10639:
Micro- and Nanotechnology Sensors, Systems, and Applications X
Thomas George; Achyut K. Dutta; M. Saif Islam, Editor(s)

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