Journal News Feed – WMSE Volume 9 (1)

The journal news feed presents the editors’ condensed summaries of key findings from selected scientific papers from SNS’ two scientific journals Scandinavian Journal of Forest Research and Wood Material Science & Engineering.

Here you find the Journal News Feed from Wood Material Science & Engineering, pills Volume 9, Issue 1.

You can also download the PDF version of the news feed.

Great savings possible in the single-family timber house industry

Traditionally, softwood timber is the main material in the frames and facades in single-family houses in Northern Scandinavia. In the prefabrication industry for these houses, softwood timber quality is evaluated by the sawmills, and it is left to the house manufacturer to adjust the timber when it arrives at its facility in order to fit its production, and this results in product quality problems for the house manufacturer. What affects the perception of timber quality deficiencies and how the industry can reduce costs by increasing timber quality are discussed in this work.

Read more in Gustafsson et al. 2014. Product quality deficiencies in the prefabrication industry for single-family houses. WMSaE 9(1), 1-11.

Scanning technology increases volume yield in sawmills

All logs are naturally more or less crooked, and this reduces the yield when the logs are sawn into boards. Traditionally, the logs are turned in a specific direction (horns down) before being sawn in order to try to maximize the volume yield. By using information from Computer Tomography (CT) scanning of logs before sawing, the logs can be rotated to give the best economic value before sawing, and this is in most cases not the “horns down” position. The study show that this unconventional rotational position does not lead to any extraordinary warp of the sawn boards.

Read more in Fredriksson et al. 2014. Rotational position of curved saw logs and warp of sawn timber. WMSaE 9(1), 31-39.

Improved shape stability of gympie messmate

Boards made of Gympie messmate (Eucalyptus cloziana) and many other eucalyptus species show poor shape stability because of internal stresses in the tree that are released during sawing and drying. The study show that a two-step steam-heat treatment process adapted to the sawn timber considerably improves the shape stability. This method can be an important step to increase the use of Gympie messmate in solid wood products.

Read more in de Cademartori et al. 2014. Physical and mechanical properties and colour changes of fast-growing Gympie messmate wood subjected to two-step steam-heat treatments. WMSaE 9(1), 40-48.