A Portable Sensor System for Structural Health Monitoring with Printed Sensors on Biodegradable Substrates

Lukas Rauter, Harald Gietler, Johanna Zikulnig, Mohammed Khalifa, Hubert Zangl, Jurgen Kosel

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

Abstract

This article presents a fully printed paper-based humidity sensor for structural health monitoring of natural fiber composites. The uncoated paper substrate represents 95.6 % of the sensor's mass, making it mostly biodegradable. The sensor measures 73 x 50 mm and consists of a capacitive part that is sensitive to moisture and a printed planar antenna, which allows the system to be read wirelessly via inductive coupling to an external FPGA platform that was specially developed for this purpose. The characterization of the sensor under controlled climatic conditions shows a sensitivity of 4.16 kHz resonance frequency shift per % relative humidity. The lamination of the sensor into composite panels and subsequent tests in a water bath shows that a capillary water absorption of the fibers can be measured with the sensor.

Original languageEnglish (US)
Title of host publication2023 IEEE SENSORS, SENSORS 2023 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350303872
DOIs
StatePublished - 2023
Event2023 IEEE SENSORS, SENSORS 2023 - Vienna, Austria
Duration: Oct 29 2023Nov 1 2023

Publication series

NameProceedings of IEEE Sensors
ISSN (Print)1930-0395
ISSN (Electronic)2168-9229

Conference

Conference2023 IEEE SENSORS, SENSORS 2023
Country/TerritoryAustria
CityVienna
Period10/29/2311/1/23

Keywords

  • flexible
  • humidity
  • moisture
  • printed electronics
  • sensor
  • structural health monitoring
  • sustainable
  • wireless

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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