High Sensitivity Wireless Strain Sensor for SHM Applications

Hassan A. Mahmoud, Hussein Nesser, Ahmed Wagih, Gilles Lubineau

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Our research aims to develop a new generation of ultrasensitive strain sensors with wireless communication of data and energy, low power consumption, and easy installation within structures to be used as in-situ measurement systems. The sensor has been developed based on RFID sensing technology that allows wireless data and power transmission by inductive coupling between the internal inductance of the sensor and the external readout coil. Microfabrication technology is used to fabricate the sensor by patterning a metallic LC circuit on a flexible substrate. Nano cracks are introduced to the electrode to create a piezoresistive effect that leads to a transmission line behavior of the capacitance electrodes. The sensor has been embedded with GFRP and CFRP, a bending test has been performed, and the sensor is used to measure the strain during the test. The sensor proves its ability to detect small strains in the composite structures due to the unconventional change in capacitance of the LC oscillator. This unconventional change in capacitance results in a large shift in resonance frequency, producing a sensitive wireless strain sensor with a Gauge factor of 50 for less than 1% strain.

Original languageEnglish (US)
Title of host publicationStructural Health Monitoring 2023
Subtitle of host publicationDesigning SHM for Sustainability, Maintainability, and Reliability - Proceedings of the 14th International Workshop on Structural Health Monitoring
EditorsSaman Farhangdoust, Alfredo Guemes, Fu-Kuo Chang
PublisherDESTECH PUBLICATIONS, INC
Pages1086-1091
Number of pages6
ISBN (Electronic)9781605956930
StatePublished - 2023
Event14th International Workshop on Structural Health Monitoring: Designing SHM for Sustainability, Maintainability, and Reliability, IWSHM 2023 - Stanford, United States
Duration: Sep 12 2023Sep 14 2023

Publication series

NameStructural Health Monitoring 2023: Designing SHM for Sustainability, Maintainability, and Reliability - Proceedings of the 14th International Workshop on Structural Health Monitoring

Conference

Conference14th International Workshop on Structural Health Monitoring: Designing SHM for Sustainability, Maintainability, and Reliability, IWSHM 2023
Country/TerritoryUnited States
CityStanford
Period09/12/2309/14/23

ASJC Scopus subject areas

  • Computer Science Applications
  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality
  • Building and Construction

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