Imaging of moisture content in wood using electrical capacitance tomography

Antti Voss, Aku Seppänen, Samuli Siltanen, Lauri Salokangas, Djebar Baroudi

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


The current study investigates whether an electrical imaging modality, electrical capacitance tomography (ECT), could provide information on the moisture content in wood. In ECT, a set of electrodes are placed around the surface of the object, and based on electrical capacitance measurements from the surface, the spatial distribution of the electrical permittivity inside the object is reconstructed. In this experimental study, water is infiltrated in a wood sample for 7 days, and ECT measurements are sequentially collected during the absorption of water. The reconstructed ECT images show a constant increase of electrical permittivity in the location of water absorption. The results support the feasibility of ECT for imaging the water content in wood.

Original languageEnglish
Title of host publicationProceedings of the World Conference on Timber Engineering (WCTE 2016)
PublisherTechnische Universität Wien
ISBN (Electronic)9783903039001
Publication statusPublished - 2016
MoE publication typeA4 Article in a conference publication
EventWorld Conference on Timber Engineering - Vienna, Austria
Duration: 22 Aug 201625 Aug 2016
Conference number: 14


ConferenceWorld Conference on Timber Engineering
Abbreviated titleWCTE
Internet address


  • Electrical capacitance tomography (ECT)
  • Eurocode 5
  • Moisture monitoring
  • Non-destructive testing
  • Timber bridges

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