scholarly journals A Fiber Optic Ultrasonic Sensing System for High Temperature Monitoring Using Optically Generated Ultrasonic Waves

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 404 ◽  
Author(s):  
Jingcheng Zhou ◽  
Xu Guo ◽  
Cong Du ◽  
Chengyu Cao ◽  
Xingwei Wang
Keyword(s):  
High Temperature ◽  
Fiber Optic ◽  
Ultrasonic Waves ◽  
Temperature Monitoring ◽  
Sensor Data ◽  
Gas Temperature ◽  
Sensing System ◽  
Ultrasonic Sensing ◽  
Fabry Perot ◽  
System Verification

This paper presents the design, fabrication, and characterization of a novel fiber optic ultrasonic sensing system based on the photoacoustic (PA) ultrasound generation principle and Fabry-Perot interferometer principle for high temperature monitoring applications. The velocity of a sound wave traveling in a medium is proportional to the medium’s temperature. The fiber optic ultrasonic sensing system was applied to measure the change of the velocity of sound. 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. Two tests were performed. The system verification test proves the ultrasound sensing capability. The high temperature test validates the high temperature measurement capability. The sensing system survived 700 °C. It successfully detects the ultrasonic signal and got the temperature measurements. The test results agreed with the reference sensor data. Two potential industry applications of fiber optic ultrasonic sensing system are, it could serve as an acoustic pyrometer for temperature field monitoring in an industrial combustion facility, and it could be used for exhaust gas temperature monitoring for a turbine engine.

1100°C fiber-optic high-temperature Fabry-Perot sensors fabricated by laser-micromachining

2011 ◽  
Author(s):  
Zengling Ran ◽  
Yong Chen ◽  
Yunjiang Rao ◽  
Dong Sun ◽  
En Lu ◽  
...  
Keyword(s):  
High Temperature ◽  
Fiber Optic ◽  
Laser Micromachining ◽  
Fabry Perot ◽  
C Fiber

Fiber-optic high-temperature sensing system and its field application

2007 ◽  
Author(s):  
Yizheng Zhu ◽  
Fabin Shen ◽  
Zhengyu Huang ◽  
Kristie L. Cooper ◽  
Gary R. Pickrell ◽  
...  
Keyword(s):  
High Temperature ◽  
Fiber Optic ◽  
Field Application ◽  
Temperature Sensing ◽  
Sensing System

scholarly journals High-temperature fiber-optic Fabry-Perot interferometric sensors

2015 ◽  
Vol 86 (5) ◽  
pp. 055001 ◽  
Author(s):  
Wenhui Ding ◽  
Yi Jiang ◽  
Ran Gao ◽  
Yuewu Liu
Keyword(s):  
High Temperature ◽  
Fiber Optic ◽  
Interferometric Sensors ◽  
Fabry Perot

High-temperature fiber sensor based on two paralleled fiber-optic Fabry–Perot interferometers with ultrahigh sensitivity

2020 ◽  
Vol 59 (02) ◽  
pp. 1 ◽  
Author(s):  
Tong Nan ◽  
Bo Liu ◽  
Yongfeng Wu ◽  
Junfeng Wang ◽  
Yaya Mao ◽  
...  
Keyword(s):  
High Temperature ◽  
Fiber Optic ◽  
Fiber Sensor ◽  
Fabry Perot ◽  
Ultrahigh Sensitivity

Integrating Fiber Fabry-Perot Cavity Sensor Into 3-D Printed Metal Components for Extreme High-Temperature Monitoring Applications

2017 ◽  
Vol 17 (13) ◽  
pp. 4107-4114 ◽  
Author(s):  
Jinesh Mathew ◽  
Carl Hauser ◽  
Philipp Stoll ◽  
Christoph Kenel ◽  
Dimitrios Polyzos ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Monitoring ◽  
Extreme High Temperature ◽  
Fabry Perot ◽  
Monitoring Applications

Ultrasonic Nondestructive Evaluation Methods Applicable to High-Temperature Environments Based on Optical Fiber Remote Sensing

2020 ◽  
Author(s):  
Yoji Okabe ◽  
Fengming Yu ◽  
Osamu Saito
Keyword(s):  
High Temperature ◽  
Optical Fiber ◽  
Nondestructive Evaluation ◽  
Guided Waves ◽  
Elevated Temperatures ◽  
Ceramic Plate ◽  
Sensing System ◽  
Heat Resistant ◽  
Propagation Behavior ◽  
Ultrasonic Sensing

Abstract The development of reliable heat-resistant structural materials requires nondestructive evaluation (NDE) techniques to evaluate the damage progress during material testing at elevated temperatures. Hence, our optical fiber ultrasonic sensing system with a phase-shifted fiber Bragg grating (PSFBG) sensor was improved to a remote AE measurement system at high temperature. The optical fiber was used as an ultrasonic waveguide from an object material in a high-temperature furnace to the PSFBG sensor placed far from the furnace. As a result, AE signals at about 1000°C were successfully detected keeping their precise waveform. Therefore this method will be useful to evaluate the damage progress in heat-resistant materials under high temperature. Furthermore, the remote PSFBG ultrasonic sensing system was incorporated into the receiving part of a laser ultrasonic visualizing inspector (LUVI) for a high-temperature NDE. The LUVI can visualize the propagation behavior of ultrasonic guided waves in complex shape structures. As a result, the improved LUVI with the optical fiber ultrasonic receiver succeeded in clear visualization of the ultrasonic wave propagation in a ceramic plate at 1000°C. Then an artificial damage formed in the ceramic plate was able to be detected by the observation of reflection waves from the damage. Hence, this system has a potential as an effective and intuitive NDE method in high-temperature environments.

scholarly journals An arc tangent function demodulation method of fiber-optic Fabry-Perot high-temperature pressure sensor

2017 ◽  
Vol 7 (3) ◽  
pp. 211-216 ◽  
Author(s):  
Qianyu Ren ◽  
Junhong Li ◽  
Yingping Hong ◽  
Pinggang Jia ◽  
Jijun Xiong
Keyword(s):  
High Temperature ◽  
Pressure Sensor ◽  
Fiber Optic ◽  
Fabry Perot ◽  
Tangent Function ◽  
Demodulation Method
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