Study on Molybdenum–Rhenium Alloy Ultrasonic Resonance Temperature Sensor
Compared to traditional temperature measurement methods, ultrasonic temperature measurement technology based on the principle of resonance offers advantages such as shorter section lengths, higher signal amplitude, and reduced signal attenuation. First, the type of sensor-sensitive element was deter...
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MDPI AG
2025-06-01
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| author | Haijian Liang Gao Wang Xiaomei Yang Yanlong Wei Hongxin Xue |
| author_facet | Haijian Liang Gao Wang Xiaomei Yang Yanlong Wei Hongxin Xue |
| author_sort | Haijian Liang |
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| description | Compared to traditional temperature measurement methods, ultrasonic temperature measurement technology based on the principle of resonance offers advantages such as shorter section lengths, higher signal amplitude, and reduced signal attenuation. First, the type of sensor-sensitive element was determined, with a resonant design chosen to improve measurement performance; using magnetostrictive and resonant temperature measurement principles, the length, diameter, and resonator dimensions of the waveguide rod were designed, and a molybdenum–rhenium alloy (Mo-5%Re) material suitable for high-temperature environments was selected; COMSOL finite element simulation was used to simulate the propagation characteristics of acoustic signals in the waveguide rod, observing the distribution of sound pressure and energy attenuation, verifying the applicability of the model in high-temperature testing environments. Second, a resonant temperature sensor consistent with the simulation parameters was prepared using a molybdenum–rhenium alloy waveguide rod, and an ultrasonic resonant temperature-sensing system suitable for high-temperature environments up to 1800 °C was constructed using the molybdenum–rhenium alloy waveguide rod. The experiment used a tungsten–rhenium calibration furnace to perform static calibration of the sensor. The temperature range was set from room temperature to 1800 °C, with the temperature increased by 100 °C at a time, and it was maintained at each temperature point for 5 to 10 min to ensure thermal stability. This was conducted to verify the performance of the sensor and obtain the functional relationship between temperature and resonance frequency. Experimental results show that during the heating process, the average resonance frequency of the sensor decreased from 341.8 kHz to 310.37 kHz, with an average sensitivity of 17.66 Hz/°C. During the cooling process, the frequency increased from 309 kHz to 341.8 kHz, with an average sensitivity of 18.43 Hz/°C. After cooling to room temperature, the sensor’s resonant frequency returned to its initial value of 341.8 kHz, demonstrating excellent repeatability and thermal stability. This provides a reliable technical foundation for its application in actual high-temperature environments. |
| format | Article |
| id | doaj-art-ff31a7e839ad4aad9082bcc484e85036 |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-ff31a7e839ad4aad9082bcc484e850362025-08-20T02:35:51ZengMDPI AGApplied Sciences2076-34172025-06-011513696510.3390/app15136965Study on Molybdenum–Rhenium Alloy Ultrasonic Resonance Temperature SensorHaijian Liang0Gao Wang1Xiaomei Yang2Yanlong Wei3Hongxin Xue4School of Software, North University of China, Taiyuan 030051, ChinaScience and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan 030051, ChinaScience and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan 030051, ChinaScience and Technology on Sensor Test & Intelligent Information Processing Laboratory, Department of Computer Science, Taiyuan Normal University, Taiyuan 030619, ChinaSchool of Computer Science and Technology, North University of China, Taiyuan 030051, ChinaCompared to traditional temperature measurement methods, ultrasonic temperature measurement technology based on the principle of resonance offers advantages such as shorter section lengths, higher signal amplitude, and reduced signal attenuation. First, the type of sensor-sensitive element was determined, with a resonant design chosen to improve measurement performance; using magnetostrictive and resonant temperature measurement principles, the length, diameter, and resonator dimensions of the waveguide rod were designed, and a molybdenum–rhenium alloy (Mo-5%Re) material suitable for high-temperature environments was selected; COMSOL finite element simulation was used to simulate the propagation characteristics of acoustic signals in the waveguide rod, observing the distribution of sound pressure and energy attenuation, verifying the applicability of the model in high-temperature testing environments. Second, a resonant temperature sensor consistent with the simulation parameters was prepared using a molybdenum–rhenium alloy waveguide rod, and an ultrasonic resonant temperature-sensing system suitable for high-temperature environments up to 1800 °C was constructed using the molybdenum–rhenium alloy waveguide rod. The experiment used a tungsten–rhenium calibration furnace to perform static calibration of the sensor. The temperature range was set from room temperature to 1800 °C, with the temperature increased by 100 °C at a time, and it was maintained at each temperature point for 5 to 10 min to ensure thermal stability. This was conducted to verify the performance of the sensor and obtain the functional relationship between temperature and resonance frequency. Experimental results show that during the heating process, the average resonance frequency of the sensor decreased from 341.8 kHz to 310.37 kHz, with an average sensitivity of 17.66 Hz/°C. During the cooling process, the frequency increased from 309 kHz to 341.8 kHz, with an average sensitivity of 18.43 Hz/°C. After cooling to room temperature, the sensor’s resonant frequency returned to its initial value of 341.8 kHz, demonstrating excellent repeatability and thermal stability. This provides a reliable technical foundation for its application in actual high-temperature environments.https://www.mdpi.com/2076-3417/15/13/6965ultrasonic guided wavesresonancemolybdenum–rhenium alloytemperature sensor |
| spellingShingle | Haijian Liang Gao Wang Xiaomei Yang Yanlong Wei Hongxin Xue Study on Molybdenum–Rhenium Alloy Ultrasonic Resonance Temperature Sensor Applied Sciences ultrasonic guided waves resonance molybdenum–rhenium alloy temperature sensor |
| title | Study on Molybdenum–Rhenium Alloy Ultrasonic Resonance Temperature Sensor |
| title_full | Study on Molybdenum–Rhenium Alloy Ultrasonic Resonance Temperature Sensor |
| title_fullStr | Study on Molybdenum–Rhenium Alloy Ultrasonic Resonance Temperature Sensor |
| title_full_unstemmed | Study on Molybdenum–Rhenium Alloy Ultrasonic Resonance Temperature Sensor |
| title_short | Study on Molybdenum–Rhenium Alloy Ultrasonic Resonance Temperature Sensor |
| title_sort | study on molybdenum rhenium alloy ultrasonic resonance temperature sensor |
| topic | ultrasonic guided waves resonance molybdenum–rhenium alloy temperature sensor |
| url | https://www.mdpi.com/2076-3417/15/13/6965 |
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