High temperature monitoring using a novel fiber optic ultrasonic sensing system

2018 ◽  
Author(s):  
Jingcheng Zhou ◽  
Xu Guo ◽  
Cong Du ◽  
Nan Wu ◽  
Tong Ma ◽  
...  
Keyword(s):  
High Temperature ◽  
Fiber Optic ◽  
Temperature Monitoring ◽  
Sensing System ◽  
Ultrasonic Sensing

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.

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

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.

Application of fiber optic high temperature sensors for structural monitoring of structures submitted to fire

2014 ◽  
Vol 102 (7) ◽  
pp. 2932-2938 ◽  
Author(s):  
Paula Rinaudo ◽  
Benjamín Torres Górriz ◽  
David Barrera Villar ◽  
Ignacio Payá Zaforteza ◽  
Pedro Calderon Garcia ◽  
...  
Keyword(s):  
High Temperature ◽  
Fiber Optic ◽  
Temperature Sensors ◽  
Structural Monitoring

High-Temperature, High-Bandwidth Fiber Optic Pressure and Temperature Sensors for Gas Turbine Applications

2004 ◽  
Author(s):  
Robert Fielder ◽  
Matthew Palmer ◽  
Wing Ng ◽  
Matthew Davis ◽  
Aditya Ringshia
Keyword(s):  
High Temperature ◽  
Gas Turbine ◽  
Fiber Optic ◽  
Temperature Sensors ◽  
High Bandwidth

scholarly journals Comparison of three types of fiber optic sensors for temperature monitoring in a groundwater flow simulator

2021 ◽  
pp. 112682
Author(s):  
Sandra Drusová ◽  
Wiecher Bakx ◽  
Pieter J. Doornenbal ◽  
R. Martijn Wagterveld ◽  
Victor F. Bense ◽  
...  
Keyword(s):  
Groundwater Flow ◽  
Fiber Optic ◽  
Fiber Optic Sensors ◽  
Temperature Monitoring ◽  
Flow Simulator

Assembly-Free-Based Fiber-Optic Micro-Michelson Interferometer for High Temperature Sensing

2016 ◽  
Vol 28 (6) ◽  
pp. 625-628 ◽  
Author(s):  
Jinde Yin ◽  
Tiegen Liu ◽  
Junfeng Jiang ◽  
Kun Liu ◽  
Shuang Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Fiber Optic ◽  
Michelson Interferometer ◽  
Temperature Sensing
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