Project: Local fibre orientation in Norway spruce timber and its significance for the timber's properties
This project aims at increased knowledge of fibre orientation in the close surroundings of knots in boards, which is a prerequisite for continued development of strength grading methods that, with high accuracy, can predict the actual properties of the timber locally in boards.
This project was concluded in June 2019.
Project manager Anders Olsson Other project members Jan Oscarsson, Min Hu, Andreas Briggert Financier Södra's Research Foundation and Linnaeus University Timetable Jan 2016-June 2019 Subject Building Technology (Department of Building Technology, Faculty of Technology)
More about the project
Wood and timber have a complex internal structure, and large variations in properties occur in different material directions, between trees, between boards from the same tree and even within individual boards. One of the properties that is most crucial for strength, stiffness and shape stability of the timber is the fibre orientation within a board. For both strength and stiffness, the presence of knots and local fibre distortion related to knots are very important.
Increased knowledge of local fibre orientation close to knots, which is the aim of the project, is therefore a prerequisite for continued development of strength grading methods that, with high precision, can predict the actual properties of the timber locally in boards, thus contributing to better material utilization and increased processing value in the production chain.