Accurate Real-Time Temperature Measurement Method in Ultra-High Temperature Rotational Environments for Aero Engines/Turbines

Li, Chen; Feng, Qiyun; Jia, Mangu; Gao, Lixia; Jia, Pengyu; Fang, Zhihong; Lu, Haoyue; Xiong, Jijun

doi:10.1109/jsen.2022.3152820

Cited by 14 publications

(4 citation statements)

References 22 publications

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“…Figure 1 shows the complete structure of the developed sensor, which is crucial to lead embedding and film growth. We measured temperature by the first thermoelectric effect [26].…”

Section: Sensor Designmentioning

confidence: 99%

Novel lead-connection technology for thin-film temperature sensors with arbitrary electrode lengths

Mingfeng

Cui

Guo

et al. 2023

Meas. Sci. Technol.

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Traditional thin-film thermocouples have limitations in measuring real surface temperature changes in aircrafts because the connection between the nanofilm and the leads can easily fail. However, how to improve the weak connection has rarely been mentioned in previous studies. In this study, a lead-embedded alumina ceramic substrate is proposed to improve the durability of thin-film thermocouples. Multilayer two-dimensional nanofilms with different thin-film electrode lengths were prepared on a substrate using DC-pulsed magnetron sputtering. Furthermore, the effect of the thin-film electrode length on the sensitivity, response time, and measurement error of the sensor was investigated. The electrode length did not affect the sensitivity and response time; however, as it increased, the temperature measurement error decreased. In addition, the static and dynamic performance, repeatability, measurement accuracy, and service lifetime of the developed sensor were verified. The results showed that the sensor had high sensitivity and linearity and good repeatability, with the response time being in microseconds. The sensor can continue to operate at 500 ℃ for more than 2 h with no signal interruption. The sensor accuracy was 0.43% at 300 ℃.

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“…Figure 1 shows the complete structure of the developed sensor, which is crucial to lead embedding and film growth. We measured temperature by the first thermoelectric effect [26].…”

Section: Sensor Designmentioning

confidence: 99%

Novel lead-connection technology for thin-film temperature sensors with arbitrary electrode lengths

Mingfeng

Cui

Guo

et al. 2023

Meas. Sci. Technol.

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“…I. Ihara and M. Takahashi [12] have presented a temperature measuring method of temperature distribution of heated material using ultrasonic and the method is based on the temperature dependence of the velocity of the ultrasonic wave propagating through the material. Chen Li et al [13] have proposed a wireless method to measure the temperature of rotational parts in aero-engines/ turbines, where the inductor and capacitor are integrated in situ on the ceramic turntable and ceramic blade using a thick film integration process. The inductor and capacitor operate in the high-temperature and ultra-high-temperature areas, respectively, and the temperature signal is transmitted through the electromagnetic coupling between the inductor coil and the antenna.…”

Section: Introductionmentioning

confidence: 99%

A temperature measurement technique using optical channel as a signal transmitting media

Ghosh,

Kumar,

Sharma

et al. 2024

International Journal on Smart Sensing and Intelligent Systems

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Temperature measurement and transmission of a signal safely to the control room for further processing is important for the process industry. In this paper, a modified head-mounted temperature measurement system using a thermocouple with opto-isolation has been developed. Here, the thermocouple is connected to the terminals, mounted on the ceramic base in the head of the thermo-well. It consists of two signal conditioners for thermocouple and AD590, both signal conditioning outputs applied to a summer circuit. The output of the summer circuit which is in the range of 1.73–3.43V, adjusted by a signal conditioning circuit, is applied to the middle electrode of Mach-Zehnder interferometer (MZI). MZI produces normalized optical signals according to the variations in temperature. These optical signals are then transmitted to the control room safely in the inflammable process industry. The transmitted signals are demodulated in the control room and then sent to the PC through an Opto-isolator circuit and DAS card. The necessary theory as well as mathematical equation has been derived. The experimental and simulation results are reported here.

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“…Aircraft engines, gas turbines, and hypersonic vehicles often operate in harsh environments with high temperatures, heavy loads, and strong vibrations. – High-temperature components, such as engine blades, that work directly in such severe environments may get deformed, cracked, or even shattered and fail, reducing the equipment’s service life and safety. , Strain sensors can detect stress and deformation in a variety of applications, including biological applications, , structural health testing, , electronic skin, , etc. Therefore, online monitoring of stress/strain on high-temperature components operating in harsh environments can aid in early defect detection for equipment maintenance and ensure the equipment’s safe operation.…”

Section: Introductionmentioning

confidence: 99%

Conformal Fabrication of Thick Film Platinum Strain Gauge Via Error Regulation Strategies for In Situ High-Temperature Strain Detection

Chen,

Zhao,

Zeng

et al. 2023

ACS Appl. Mater. Interfaces

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Monitoring high-temperature strain on curved components in harsh environments is a challenge for a wide range of applications, including in aircraft engines, gas turbines, and hypersonic vehicles. Although there are significant improvements in the preparation of high-temperature piezoresistive film on planar surfaces using 3D printing methods, there are still difficulties with poor surface compatibility and high-temperature strain testing on curved surfaces. Herein, a conformal direct ink writing (CDIW) system coupled with an error feedback regulation strategy was used to fabricate high-precision, thick films on curved surfaces. This strategy enabled the maximum amount of error in the distance between the needle and the substrate on a curved surface to be regulated from 155 to 4 μm. A conformal Pt thick-film strain gauge (CPTFSG) with a room-temperature strain coefficient of 1.7 was created on a curved metallic substrate for the first time. The resistance drift rate at 800 °C for 1 h was 1.1%, which demonstrated the excellent stability and oxidation resistance of the CPTFSG. High-temperature dynamic strain tests up to 769 °C revealed that the sensor had excellent high-temperature strain test performance. Furthermore, the CPTFSG was conformally deposited on an aero-engine turbine blade to perform in situ tensile and compressive strain testing at room temperature. High-temperature strain tests were conducted at 100 and 200 °C for 600 and 580 με, respectively, demonstrating a high steady-state response consistent with the commercial high-temperature strain transducer. In addition, steady-state strain tests at high temperatures up to 496 °C were tested. The CDIW error modulation strategy provides a highly promising approach for the high-precision fabrication of Pt thick films on complex surfaces and driving in situ sensing of hightemperature parameters on curved components toward practical applications.

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Accurate Real-Time Temperature Measurement Method in Ultra-High Temperature Rotational Environments for Aero Engines/Turbines

Cited by 14 publications

References 22 publications

Novel lead-connection technology for thin-film temperature sensors with arbitrary electrode lengths

Novel lead-connection technology for thin-film temperature sensors with arbitrary electrode lengths

A temperature measurement technique using optical channel as a signal transmitting media

Conformal Fabrication of Thick Film Platinum Strain Gauge Via Error Regulation Strategies for In Situ High-Temperature Strain Detection

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