Wood and composite materials

Our research on wood and bio-based composite materials is concentrated on two main topics; the non-destructive measurement techniques (NDT) and modifications of wood materials and natural fiber composites.

Non-destructive measurement techniques

Bio-based materials are used more and more, which requires characterisation of complex and heterogeneous materials. The materials can be characterised on production lines with NDT techniques suitable for continuous measurements. We study air-coupled ultrasound (ACU), electrical impedance spectroscopy (EIS), ultra-wideband (UWB) radar and acoustic emission (AE) and their combinations. With our techniques we can measure for example defects, density, moisture content and gradient in timber as well as moisture content and foreign objects in biomass. In addition to comprehensive laboratory testing, we have developed and tested the techniques in industry. We aim to develop techniques that are fast and robust to serve the measurement needs of the industries.  

Natural fiber composites

The growing circular economy requires improvements in materials that should be achieved by residue or secondary products from industrial and agricultural processes. For new wood products our research is mostly focused on new coatings and surface treatments which improve the weather and/or fire resistance of the products. In the coatings we utilize for example separated distillates from slow pyrolysis of wood and secondary materials from mining and other industries. In addition, we study natural fibre composites, for example wood-plastic composites (WPC) and hemp composites; there we aim to improve the materials and products also by slow pyrolysis liquids from wood and other biomass.

For more information:

Laura Tomppo, tel. +358 40 355 2541

Markku Tiitta, tel. +358 40 355 2077