A Novel Two-dimensional Distributed Temperature Sensor Based on Electrical Resistance Tomography

Reza Rashetnia, Danny Smyl, Milad Hallaji, Aku Seppänen, Mohammad Pour-Ghaz

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


This paper presents the development of a novel two-dimensional (2D) Electrical Resistance Tomography (ERT) based distributed temperature sensor. This sensor consists of a thin layer of porous metal film that is manufactured by spraying colloidal copper paint to the surface of an electrically non-conductive substrate. A local temperature change of the metal film, locally changes its electrical conductivity. This conductivity change is localized and quantified with ERT. In the present work, the proposed temperature sensor is experimentally evaluated by imposing known temperature changes on its surface using a heat source. The results indicate that the ERT-based temperature sensor provides a good qualitative estimates of the magnitude and quantitative estimates of the location of the temperature change.
Original languageEnglish
Title of host publicationStructural Health Monitoring 2017 "Real-Time Material State Awareness and Data-Driven Safety Assurance" - Proceedings of the Eleventh International Workshop on Structural Health Monitoring (IWSHM 2017)
EditorsFu-Kuo Chang, Fotis Kopsaftopoulos
PublisherDEStech Publications Inc.
Number of pages9
ISBN (Print)978-1-60595-330-4
Publication statusPublished - 2017
MoE publication typeA4 Article in a conference publication
EventInternational Workshop on Structural Health Monitoring - Stanford, United States
Duration: 12 Sep 201714 Sep 2017
Conference number: 11


WorkshopInternational Workshop on Structural Health Monitoring
Abbreviated titleIWSHM
Country/TerritoryUnited States


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