Program May 19th, 2015
The LTU choir
Bert Öhlund, Chairman of the Foundation Träenigheten * opens the ceremony and presents:
• Niclas Björngrim, Lic
• Kai Yang, PhD
• Erik Johansson, PhD
• Ann Axelsson, PhD
• Mona Olofsson, PhD
The researchers nails their doctoral theses, and the licentiate hangs his research essay.
Bert Öhlund ends the ceremony
The LTU choir sings the Doctor anthem
The following researchers at Luleå University of Technology in Skellefteå will nail their doctoral thesis and hang licentiate thesis
Computed tomography and fingerprint traceability in the wood industry – The purpose of the work described in this thesis was to develop non-invasive measurement methods for logs and sawn timber that increase the profitability for the wood industry in general and sawmills in particular. The objectives were to detect knots in the logs using computed tomography, evaluate how the knot information is used in the best way, and to develop methods for traceability of wood products.
Planing wood with twist – I have mainly investigated how twist in sawn timber is affected by planing and how twist affects the planed timber, but I have also looked at necessary planing allowances. Some of the results are that the twist reduction by planing for 50 mm thick softwood timber is about 25 %, twist is the main cause for skewed cross-sections and that carefully calculated planing allowances could have increased the volume yield by more than 3 percentage units
Electric Power Engineering
On Harmonic Emission, Propagation and Aggregation in Wind Power Plants – The work presents power quality of modern wind turbines and wind power plants, in terms of waveform distortion. The practical characteristics of modern wind turbines are presented with novel analytical methods. Based on multiple issues within a wind power plant as a part of a power system, a systematic approach is proposed to evaluate the waveform distortion within wind power plants.
Licentiate seminar 2015-02-25
Wood Products engineering
Monitoring of a timber footbridge - The work presents the monitoring systems of the Älvsbacka bridge. Using different types of sensors which are placed on the bridge, one can continuously measure the position, moisture content, temperature etc of the bridge. Measured data from long-term monitoring can be used for planing maintenance of the bridge and provide more knowledge when designing and construction of the next generation wooden bridges.