Static strain modelling, calibration, and measurements for high-temperature wireless saw resonator operation

Syeda Fizzah Jilani, David Leff, Anin Maskay, Robert J. Lad, Mauricio Pereira Da Cunha

Research output: Chapter in Book/Report/Conference proceedingConference Proceeding (Non-Journal item)

9 Citations (SciVal)


Static strain measurements are relevant for Integrated System Health Monitoring of civil structures, aircrafts, power plants and advanced manufacturing equipment, with implications for safety, process efficiency, and maintenance costs. Wireless strain sensing is highly desirable where the presence of wires poses significant safety concerns, increases maintenance, and thus overall costs, or where they are not feasible, such as in applications which contain moving parts. This paper presents wireless interrogation of surface acoustic wave resonators (SAWRs) fabricated on langasite (LGS) along Euler angles (0°, 138.5°, 32.9°) and aimed at the detection of static strain at high-temperature (HT, above 100°C). Both commercial HT strain gauges and finite element analysis (FEA Abaqus software) were used and compared for SAWR strain calibration from room temperature (RT) to HT. In addition, this work investigated a compromise between high temperature operation vs. sensitivity based on the thickness of ceramic adhesive used. For instance, a reduction in the adhesive thickness from about 150 µm to 135 µm, resulted in a 39% increase in sensitivity at RT. It was also observed that the sensitivity dropped up to 34% from RT to 200°C. Wireless operation, calibration, and increase in sensitivity constitute important advances in the use of LGS SAW devices to monitor static stress in high-temperature harsh environments.

Original languageEnglish
Title of host publicationIUS 2020 - International Ultrasonics Symposium, Proceedings
PublisherIEEE Press
ISBN (Electronic)9781728154480
Publication statusPublished - 07 Sept 2020
Event2020 IEEE International Ultrasonics Symposium, IUS 2020 - Las Vegas, United States of America
Duration: 07 Sept 202011 Sept 2020

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727


Conference2020 IEEE International Ultrasonics Symposium, IUS 2020
Country/TerritoryUnited States of America
CityLas Vegas
Period07 Sept 202011 Sept 2020


  • Harsh-environment
  • High-temperature
  • Passive strain sensor component
  • Wireless static strain monitoring


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