Since 2015 I have been a senior lecturer in Building Technology. Before that, I was an industrial PhD student at the University and in 2014 I defended my doctoral thesis on strength grading of structural timber. Previously, I have been working as a structural engineer at various consulting and contracting companies.
Teaching
I teach in three courses for third year students studying the bachelor programme in Civil Engineering, with specialisation in Building and Construction. In the course "Steel and wood structures" I am responsible for calculation exercises and a project assignment. I am also responsible for the course "Project in Building Design – Project Planning" which includes a major design task in which students apply obtained knowledge about the structural materials concrete, steel and wood. I am also Course Coordinator of the "Degree Project Course" which is given in both in the previously mentioned bachelor programme in Civil Engineering, and in the bachelor programme in Building Technology, with specialisation in Architectural Engineering. The course includes how scientific publications should be formulated both in terms of content and language. Every second year I also teach about steel structures within an education programme at the Military Academy, Stockholm.
Research
My research concerns development of strength grading methods by which the mechanical properties of structural timber can be predicted with high accuracy. The purpose is that the engineering potential of the wood material could be utilized in a much better way than what is possible with the grading methods used today. The new methods can, for example, be used to grade lamellae of glulam and cross laminated timber for the purpose of optimising the structural properties of such products. A number of projects with this focus have been carried out and are ongoing in cooperation with the industry. I am also deputy supervisor for four Phd students whose studies concern scanning of timber pieces, strength grading, and modeling of wood and timber properties. I am also participating in a project for the development of knot models using laser- and CT scanning.
Commissions
I have been project leader for two pre-studies which served as a basis for application for civil engineering rights submitted by the Linnaeus University to the Swedish Higher Education Authority in the spring of 2018. I am also deputy project manager for the education project "Expert Competence for Sustainable Timber Engineering", which concerns development and accomplishment of courses on academically advanced level to professionals in the construction sector and the woodworking industry. I also participate in a project concerning the development of a two-year masters programme in Sustainable Structural Engineering.
My research groups
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Cross-Laminated Timber (CLT) Cross-Laminated Timber (CLT) is one of the newest research fields at the Department of Building Technology. It combines the broad, scientific knowledge from various…
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Forestry, Wood and Building Technologies Within the research area Forestry, Wood and Building Technologies, the objective of Linnaeus University Centre for Data Intensive Sciences and Applications…
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Strength Grading of Timber Timber exhibits large variations in mechanical properties, which makes grading of timber into appropriate strength classes important for the competitiveness towards other…
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Wood Building Technology The main direction of our research environment is wood building technology and applied mechanics. The research is to a large extent applied and is practised in close…
My ongoing research projects
My completed research projects
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Project: Detection of defects on wood surfaces on the basis of optical scanning The purpose of this research project is to gain increased knowledge and a better understanding of how different wood…
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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…
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Project: Strength grading of structural timber and glued laminated timber by laser scanning and three-dimensional structural modeling This project aims in particular at development of an accurate…
Publications
Article in journal (Refereed)
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Olsson, A., Pot, G., Viguier, J., Hu, M., Oscarsson, J. (2022). Performance of timber board models for prediction of local bending stiffness and strength-with application on douglas fir sawn timber. Wood and Fiber Science. 54 (4). 226-245.
Status: Published -
Briggert, A., Olsson, A., Oscarsson, J. (2020). Prediction of tensile strength of sawn timber : definitions and performance of indicating properties based on surface laser scanning and dynamic excitation. Materials and Structures. 53 (3). 1-20.
Status: Published -
Habite, T., Olsson, A., Oscarsson, J. (2020). Automatic detection of pith location along norway spruce timber boards on the basis of optical scanning. European Journal of Wood and Wood Products. 78. 1061-1074.
Status: Published -
Briggert, A., Olsson, A., Oscarsson, J. (2020). Prediction of tensile strength of sawn timber : models for calculation of yield in strength classes. Materials and Structures. 53 (3). 1-15.
Status: Published -
Van Blokland, J., Olsson, A., Oscarsson, J., Daniel, G., Adamopoulos, S. (2020). Crack formation, strain distribution and fracture surfaces around knots in thermally modified timber loaded in static bending. Wood Science and Technology. 54. 1001-1028.
Status: Published -
Van Blokland, J., Olsson, A., Oscarsson, J., Adamopoulos, S. (2019). Prediction of bending strength of thermally modified timber using high-resolution scanning of fibre direction. European Journal of Wood and Wood Products. 77 (3). 327-340.
Status: Published -
Olsson, A., Briggert, A., Oscarsson, J. (2019). Increased yield of finger jointed structural timber by accounting for grain orientation utilizing the tracheid effect. European Journal of Wood and Wood Products. 77 (6). 1063-1077.
Status: Published -
Olsson, A., Pot, G., Viguier, J., Faydi, Y., Oscarsson, J. (2018). Performance of strength grading methods based on fibre orientation and axial resonance frequency applied to Norway spruce (Picea abies L.), Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) and European oak (Quercus petraea (Matt.) Liebl./Quercus robur L.). Annals of Forest Science. 75 (4).
Status: Published -
Hu, M., Olsson, A., Johansson, M., Oscarsson, J. (2018). Modelling local bending stiffness based on fibre orientation in sawn timber. European Journal of Wood and Wood Products. 76 (6). 1605-1621.
Status: Published -
Briggert, A., Hu, M., Olsson, A., Oscarsson, J. (2018). Tracheid effect scanning and evaluation of in-plane and out-of-plane fibre direction in Norway spruce using. Wood and Fiber Science. 50 (4). 411-429.
Status: Published -
Hu, M., Briggert, A., Olsson, A., Johansson, M., Oscarsson, J., et al. (2018). Growth layer and fibre orientation around knots in Norway spruce : a laboratory investigation. Wood Science and Technology. 52 (1). 7-27.
Status: Published -
Olsson, A., Oscarsson, J. (2017). Strength grading on the basis of high resolution laser scanning and dynamic excitation : a full scale investigation of performance. European Journal of Wood and Wood Products. 75 (1). 17-31.
Status: Published -
Briggert, A., Olsson, A., Oscarsson, J. (2016). Three-dimensional modelling of knots and pith location in Norway spruce boards using tracheid-effect scanning. European Journal of Wood and Wood Products. 74 (5). 725-739.
Status: Published -
Hu, M., Olsson, A., Johansson, M., Oscarsson, J., Serrano, E. (2016). Assessment of a Three-Dimensional Fiber Orientation Model for Timber. Wood and Fiber Science. 48 (4). 271-290.
Status: Published -
Hu, M., Johansson, M., Olsson, A., Oscarsson, J., Enquist, B. (2015). Local variation of modulus of elasticity in timber determined on the basis of non-contact deformation measurement and scanned fibre orientation. European Journal of Wood and Wood Products. 73 (1). 17-27.
Status: Published -
Oscarsson, J., Olsson, A., Enquist, B. (2014). Localized modulus of elasticity in timber and its significance for the accuracy of machine strength grading. Wood and Fiber Science. 46 (4). 489-501.
Status: Published -
Olsson, A., Oscarsson, J., Serrano, E., Källsner, B., Johansson, M., et al. (2013). Prediction of timber bending strength and in-member cross-sectional stiffness vartiation on basis of local wood fibre orientation. European Journal of Wood and Wood Products. 71 (3). 319-333.
Status: Published -
Oscarsson, J., Olsson, A., Enquist, B. (2012). Strain fields around knots in Norway spruce specimens exposed to tensile forces. Wood Science and Technology. 46 (4). 593-610.
Status: Published -
Olsson, A., Oscarsson, J., Johansson, M., Källsner, B. (2012). Prediction of timber bending strength on basis of bending stiffness and material homogeneity assessed from dynamic excitation. Wood Science and Technology. 46 (4). 667-683.
Status: Published -
Oscarsson, J., Olsson, A., Johansson, M., Enquist, B., Serrano, E. (2011). Strength grading of narrow dimension Norway spruce side boards in the wet state using first axial resonance frequency. International Wood Products Journal. 2 (2). 108-114.
Status: Published
Conference paper (Refereed)
- Pot, G., Collet, R., Olsson, A., Viguier, J., Oscarsson, J. (2021). Structural properties of Douglas fir sawn timber : Significance of distance to pith for yield in strength classes. World Conference on Timber Engineering 2021, WCTE 2021.
- Habite, T., Olsson, A., Oscarsson, J. (2019). Detection of Pith Location of Norway Spruce Timber Boards on the Basis of Optical Scanning. Proceedings, 21st international nondestructive testing and evaluation of wood symposium : Freiburg, Germany. 268-275.
- Habite, T., Olsson, A., Oscarsson, J. (2019). Automatic detection of pith location along boards of Norway spruce on the basis of data from optical scanning of longitudinal surfaces. CompWood 2019 - International Conference on Computational Methods in Wood Mechanics - from material properties to Timber Structures, Växjö, Sweden, June 17-19, 2019. 64-64.
- Van Blokland, J., Adamopoulos, S., Olsson, A., Oscarsson, J., Källander, B. (2018). Evaluation of non-destructive test methods to predict bending properties of thermally modified timber. 2018 World Conference on Timber Engineering (WCTE), August 20-23, 2018, Seoul, Republic of Korea. 8.
- Hu, M., Olsson, A., Johansson, M., Oscarsson, J. (2018). Modelling local bending stiffness of Norway spruce sawn timber using scanned fibre orientation. Proceedings, 2018, ICEM 2018 : The 18th International Conference on Experimental Mechanics (ICEM 2018); Brussels, Belgium 1–5 July 2018.
- Van Blokland, J., Adamopoulos, S., Olsson, A., Oscarsson, J. (2018). Bending properties and strain fields around knots in thermally modified timber. .
- Hu, M., Briggert, A., Olsson, A., Johansson, M., Oscarsson, J., et al. (2016). Three dimensional growth layer geometry and fibre orientation around knots : a laboratory investigation. Proceedings of WCTE 2016 World Conference on Timber Engineering.
- Briggert, A., Hu, M., Olsson, A., Oscarsson, J. (2016). Evaluation of three dimensional fibre orientation in Norway spruce using a laboratory laser scanner. WCTE 2016 : World Conference on Timber Engineering.
- Briggert, A., Olsson, A., Oscarsson, J. (2015). Three dimensional knot models based on surface laser scanning. Proceedings 19th International Nondestructive Testing and Evaluation of Wood Symposium Rio de Janeiro, Brazil, 23-25 September, 2015.. 83-90.
- Hu, M., Olsson, A., Johansson, M., Oscarsson, J. (2015). An Application of 3D Fiber Angles Identified through Laser Scanning Based on Tracheid Effect. .
- Olsson, A., Oscarsson, J. (2015). Strength grading based on high resolution laser scanning : performance of a procedure newly approved for the European market. Proceedings of the 19th International Nondestructive Testing and Evaluation of Wood Symposium. 232-240.
- Briggert, A., Olsson, A., Oscarsson, J. (2015). Modelling 3D orientation of knots in timber on the basis of dot laser scanning and the tracheid effect. .
- Serrano, E., Oscarsson, J., Sterley, M., Enquist, B. (2014). Green-Glued Products for Structural Applications. Materials and Joints in Timber Structures : Recent Developments of Technology. 45-55.
- Oscarsson, J., Serrano, E., Olsson, A., Enquist, B. (2014). Identification of weak sections in glulam beams using calculated stiffness profiles based on lamination surface scanning. Proceedings of the 2014 World Conference on Timber Engineering, Quebec, Canada, 10-14 August.
- Oscarsson, J., Olsson, A., Enquist, B. (2014). Improving Strength of Glulam Laminations of Norway Spruce Side Boards by Removal of Weak Sections Using Optimized Finger Jointing. Materials and Joints in Timber Structures : Recent Developments of Technology. 801-811.
- Olsson, A., Oscarsson, J. (2014). Three dimensional fibre orientation models for wood based on laser scanning utilizing the tracheid effect. Proceedings of the 2014 World Conference on Timber Engineering (WCTE), Quebec City, Canada, August 10−14, 2014.
- Oscarsson, J., Olsson, A., Enquist, B. (2013). Optimization of machine strength grading of structural timber by means of bending MOE profiles with high resolution. Proceedings of the 18th International Nondestructive Testing and Evaluation of Wood Symposium, Madison, Wisconsin, USA, September 24−27, 2013. 396-403.
- Oscarsson, J., Olsson, A., Enquist, B., Johansson, M., Serrano, E. (2011). Determination of tensile strain fields in Norway spruce side boards using two master-slave connected contact-free measurement systems based on digital image correlation.. Proceedings (Poster session) of the 17th International Nondestructive Testing and Evaluation of Wood Symposium, Sopron, Hungary, September 14-16, 2011..
- Oscarsson, J., Olsson, A., Enquist, B. (2010). Strain fields around a traversing edge knot in a spruce specimen exposed to tensile forces. Proceedings of the 2010 World Conference on Timber Engineering.
- Oscarsson, J., Olsson, A., Johansson, M., Enquist, B., Serrano, E. (2010). Strength grading of wet Norway spruce side boards by use of axial dynamic excitation. Proceedings of the 11th World Conference on Timber Engineering 2010, WCTE 2010, Riva del Garda, Trento, Italy, June 20-24. 1601-1606.
- Olsson, A., Oscarsson, J., Johansson, M., Källsner, B. (2010). Prediction of timber bending strength using dynamic excitation of bending modes. Proceedings of the 11th World Conference on Timber Engineering.
- Serrano, E., Oscarsson, J., Enquist, B., Sterley, M., Petersson, H., et al. (2010). Green-glued laminated beams : High performance and added value. World Conference on Timber Engineering.
Conference paper (Other academic)
- Olsson, A., Oscarsson, J., Johansson, M., Källsner, B. (2010). Dynamic excitation and higher bending modes for prediction oftimber bending strength. Proceedings of the final conference of COST action E53.
- Oscarsson, J., Olsson, A., Enquist, B. (2010). Tensile strain fields around an edge knot in a spruce specimen. Proceeedings of the Final Conference of COST Action E53, 4−7 May, Edinburgh, Scotland, 2010.
- Oscarsson, J., Olsson, A., Johansson, M., Enquist, B., Serrano, E. (2010). Strength grading of wet Norway spruce side boards for use as laminations in wet-glued laminated beams. Proceedings of the final conference of COST action E53, 4-7 May 2010, Edinburgh, Scotland, 2010..
Report (Other academic)
- Bader, T.K., Oscarsson, J., Olsson, A., Schweigler, M., Dorn, M., et al. (2024). Competitive CLT - Improving the competitive advantage of CLT-based building systems through engineering design andreduced carbon footprint : Final report. Thomas Bader, Department of Building Technology, Linnaeus University. 20.
- Olsson, A., Oscarsson, J. (2021). Styvhet och densitet för virke av centrumutbyte och sidobrädor av gran från Södras anläggningför KL-träproduktion i Värö : Resultat baserade på mätdata från Mönsterås i april 2020 och Växjö i december 2020. 24.
- Olsson, A., Källsner, B., Oscarsson, J., Enquist, B. (2014). Nytt paradigm för hållfasthetssortering av konstruktionsvirke : Projektrapport två. Växjö, Linnéuniversitetet. 39.
- Olsson, A., Källsner, B., Oscarsson, J., Enquist, B. (2013). Nytt paradigm för hållfasthetssortering av konstruktionsvirke : Projektrapport ett. Växjö, Linnéuniversitetet. 33.
- Oscarsson, J., Olsson, A., Enquist, B., Johansson, M., Serrano, E. (2012). Determining tensile strain fields in Norway spruce side boards using two master-slave connected digital image correlation systems. Växjö, School of Engineering, Linnaeus University. 14.
- Serrano, E., Blixt, J., Enquist, B., Källsner, B., Oscarsson, J., et al. (2011). Wet glued laminated beams using side boards of Norway spruce. Växjö, Linnaeus University. 58.
Doctoral thesis, comprehensive summary (Other academic)
- Oscarsson, J. (2014). Strength grading of structural timber and EWP laminations of Norway spruce : Development potentials and industrial applications. Doctoral Thesis. Växjö, Linnaeus University Press. 155.
Licentiate thesis, comprehensive summary (Other academic)
- Oscarsson, J. (2012). Strength grading of structural timber and EWP laminations of Norway spruce : Development potentials. Licentiate Thesis. Växjö, School of Engineering, Linnaeus University. 72.
Manuscript (preprint) (Other academic)
Report (Other (popular science, discussion, etc.))
- Petersson, H., Bengtsson, T., Blixt, J., Enquist, B., Källsner, B., et al. (2009). Högre värdeutbyte genom våt- och torrlimning av sågade sidobrädor till egenskapsoptimerade träprodukter för byggmarknaden.
Patent (Other (popular science, discussion, etc.))
- Olsson, A., Serrano, E., Oscarsson, J., Enquist, B., Johansson, M., et al. (2014). Förfarande och anordning för utvärdering av en bräda av trä.