Wireless Interrogation of High Temperature Surface Acoustic Wave Dynamic Strain Sensor

Journal Article · Mon Sep 07 00:00:00 EDT 2020 · IEEE International Ultrasonics Symposium (IUS)

DOI:https://doi.org/10.1109/ius46767.2020.9251428· OSTI ID:2290243

Leff, David ^[1]; Maskay, Anin ^[2]; da Cunha, Mauricio Pereira ^[1]

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1. University of Maine, Orono, ME (United States)
2. Environetix Technologies Corporation, Orono, ME (United States)

Dynamic strain sensing is necessary for high-temperature harsh-environment applications, including powerplants, oil wells, aerospace, and metal manufacturing. Monitoring dynamic strain is important for structural health monitoring and condition-based maintenance in order to guarantee safety, increase process efficiency, and reduce operation and maintenance costs. Sensing in high-temperature (HT), harsh-environments (HE) comes with challenges including mounting and packaging, sensor stability, and data acquisition and processing. Wireless sensor operation at HT is desirable because it reduces the complexity of the sensor connection, increases reliability, and reduces costs. Surface acoustic wave resonators (SAWRs) are compact, can operate wirelessly and battery-free, and have been shown to operate above 1000°C, making them a potential option for HT HE dynamic strain sensing. This paper presents wirelessly interrogated SAWR dynamic strain sensors operating around 288.8MHz at room temperature and tested up to 400°C. The SAWRs were calibrated with a high-temperature wired commercial strain gauge. The sensors were mounted onto a tapered-type Inconel constant stress beam and the assembly was tested inside a box furnace. The SAWR sensitivity to dynamic strain excitation at 25°C, 100°C, and 400°C was .439 μV/με, 0.363μV/με, and .136 μV/με, respectively. Furthermore, the experimental outcomes verified that inductive coupled wirelessly interrogated SAWRs can be successfully used for dynamic strain sensing up to 400°C.

• Research Organization: Univ. of Maine, Orono, ME (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: FE0031550
• OSTI ID: 2290243
• Journal Information: IEEE International Ultrasonics Symposium (IUS), Conference: 2020 IEEE International Ultrasonics Symposium (IUS), Las Vegas, NV (United States), 7-11 Sep 2020; ISSN 1948-5719
• Publisher: IEEE
• Country of Publication: United States
• Language: English

Related Subjects

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high-temperature harsh-environment sensor
dynamic strain sensor
acoustic wave
wireless