I work as professor in timber engineering at the department of building technology. I am also acting as supervisor in two PhD projects concerning strength grading.
Teaching
Within the education I am teaching structural engineering in the bachelor program in civil engineering and advanced timber engineering in the master’s programme in structural engineering.
Research
My research area is timber with a focus on wood quality. It can be questions regarding the wood material such as shape stability, stiffness and strength as well as questions regarding connections. Within the national SIO-programme "BioInnovation" I have a role as Expert team leader for the area "Construction & Design".
Publications
Article in journal (Refereed)
- 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. 1605-1621.
- 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. 7-27.
- Hallingbäck, H.R., Högberg, K., Säll, H., Lindeberg, J., Johansson, M., et al. (2018). Optimal timing of early genetic selection for sawn timber traits in Picea abies. European Journal of Forest Research. 137. 553-564.
- Wessels, C., Crafford, P., Dutoit, B., Grahn, T., Johansson, M., et al. (2016). Variation in physical and mechanical properties from three drought tolerant Eucalyptus species grown on the dry west coast of Southern Africa. European Journal of Wood and Wood Products. 74. 563-575.
- 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. 271-290.
- Phiri, D., Ackerman, P., Wessels, B., Du Toit, B., Johansson, M., et al. (2015). Biomass equations for selected drought-tolerant eucalypts in South Africa. Southern Forests, a journal of forest science. 77. 255-262.
- 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. 17-27.
- Högberg, K., Hallingbäck, H., Säll, H., Johansson, M., Jansson, G. (2014). The potential for the genetic improvement of sawn timber traits in Picea abies. Canadian Journal of Forest Research. 44. 273-280.
- Karlsson, S., Jonson, B., Johansson, M., Enquist, B. (2013). The effect of single-side ion exchange on the flexural strength of plain and holed float glass containing a drilled hole. European Journal of Glass Science and Technology. Part A: Glass Technology. 54. 66-71.
- 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. 319-333.
- 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. 667-683.
- 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. 108-114.
- Straže, A., Kliger, R., Johansson, M., Gorišek, Z. (2010). The influence of material properties on the amount of twist of spruce wood during kiln drying. European Journal of Wood and Wood Products. 69. 239-246.
- Ormarsson, S., Dahlblom, O., Johansson, M. (2010). Numerical study of how creep and stiffness evolution affect the growth stress formation in trees. Trees. 24. 105-115.
- Johansson, M., Ormarsson, S. (2009). Influence of growth stresses and material properties on distortion of sawn timber – Numerical investigation.. Annals of Forest Science. 66.
- Ormarsson, S., Dahlblom, O., Johansson, M. (2009). Finite element study of growth stress formation in wood and related distortion of sawn timber. Wood Science and Technology. 43. 387-403.
- Epmeier, H., Johansson, M., Kliger, R., Westin, M. (2007). Bending creep performance of modified timber. European Journal of Wood and Wood Products. 65.
- Ormarsson, S., Johansson, M. (2006). Finite element simulation of growth stress formation and related board distortions resulting from sawing and forced drying. New Zealand Journal of Forestry Science. 36. 408-423.
Conference paper (Refereed)
- Landel, P., Linderholt, A., Johansson, M. (2019). Test-analyses comparisons of a stabilizing glulam truss for a tall building. Book of abstracts: CompWood June 17-19, 2019, Växjö, Sweden : International Conference on Computational Methods in Wood Machanics - from Material Properties to Timber Structure.
- Landel, P., Linderholt, A., Johansson, M. (2018). Dynamical properties of a large glulam truss for a tall timber building. .
- Ormarsson, S., Johansson, M. (2018). Finite element simulation of global structural behaviour of multifamily timber buildings using prefabricated volume modules. WCTE 2018 - World Conference on Timber Engineering.
- 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.
- Johansson, M., Linderholt, A., Bolmsvik, Å., Jarnerö, K., Olsson, J., et al. (2015). Building higher with light-weight timber structures : the effect of wind induced vibrations. Proceedings of the Internoise 2015 conference.
- Hu, M., Olsson, A., Johansson, M., Oscarsson, J. (2015). An Application of 3D Fiber Angles Identified through Laser Scanning Based on Tracheid Effect. .
- Johansson, M., Mahapatra, K., Vessby, J., Blom, Å., Olsson, A. (2014). Expert competence for sustainable timber engineering : a master program in close cooperation between industry and academia. WCTE 2014 - World Conference on Timber Engineering, Proceedings.
- Hu, M., Johansson, M., Olsson, A., Enquist, B. (2013). Comparison of local variation of modulus of elasticity determined on basis of scanned fiber angles and full strain field measurements. The 18th International Nondestructive Testing and Evaluation of Wood Symposium.
- 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..
- Hu, M., Johansson, M., Olsson, A., Bengtsson, C., Brandt, A. (2011). Grading of sawn timber using the vibration technique : locating imperfections based on flexural mode shapes. 17th international nondestructive testing and evaluation of wood symposium. 269-276.
- Johansson, M., Sjödin, J. (2010). A general FE-model to predict capacity of a steel-timber dowel joint with complex loading. WCTE 2010 – The 11th World Conference on Timber Engineering, Riva del Garda, Italy, 20-24 June.
- Johansson, M., Olsson, A. (2010). Grading of sawn timber with dynamic methods – influence of defect. WCTE 2010 – The 11th World Conference on Timber Engineering, Riva del Garda, Italy, 20-24 June.
- 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 2010 World Conference on Timber Engineering, Riva del Garda, Trento, Italy, June 20-24.
- 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.
- Robert, K., Mohammad, A., Marie, J., Roberto, C. (2008). Strengthening timber with CFRP or steel plates - short and long-term performance. WCTE 2008 – The 10th World Conference on Timber Engineering.
- Kliger, R., Al-Emrani, M., Johansson, M., Crocetti, R. (2007). Strengthening glulam beams with steel or CFRP plates. Proceedings of Asia-Pacific Conference on FRP in Structures (APFIS 2007).
- Johansson, M., Lassl, V., Löfgren, P., Engström, B., Kliger, R. (2007). Standardised information flow for connections in industrialised construction. Proceedings of ManuBuild 1st International Conference - The Transformation of the Industry: Open Building Manufacturing.
- Johansson, M., Al-Emrani, M., Jacob, J., Garzon Barragan, O., Crocetti, R. (2007). Increased stiffness of timber beams with steel and/or CFRP laminates. Proceedings of third international conference on structural engineering, mechanics and computation.
Chapter in book (Refereed)
- Wimmer, R., Johansson, M. (2014). Effects of Reaction Wood on the Performance of Wood and Wood-Based Products. The Biology of Reaction Wood. Springer. 225-248.
Conference paper (Other academic)
- Johansson, M., Linderholt, A., Jarnerö, K., Landel, P. (2016). Tall timber buildings : a preliminary study of wind-induced vibrations of a 22-storey building. Proceedings of the World Conference on Timber Engineering (WCTE 2016) : August 22-25, 2016, Vienna, Austria.
- Wessels, C., Crafford, P., Du Toit, B., Grahn, T., Johansson, M., et al. (2015). Lumber properties of three drought tolerant eucalyptus species grown in arid regions of south africa. IUFRO Symposium: Silviculture and Management of Dryland Forests,.
- Karlsson, S., Jonson, B., Johansson, M., Enquist, B. (2012). Single-Side Ion Exchange Strengthening of Holed Float Glass. Nordic Conference on Ceramic and Glass Technology.
- 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., 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..
- Johansson, M., Olsson, A. (2009). Grading of sawn timber with dynamic methods – influence of defects. Proceedings of the COST E53 Workshop, Lisbon 22-23 October 2009.
Chapter in book (Other academic)
- Serrano, E., Johansson, M. (2016). Förband och anslutningsdetaljer. Limträhandbok : Del 2. Projektering av limträkonstruktioner. Stockholm, Svenskt Trä. 198-227.
Report (Other academic)
- Johansson, M., Säll, H., Lundqvist, S. (2013). Properties of materials from Birch – Variations and relationships : Part 2. Mechanical and physical properties. Växjö, Linnaeus University. 42.
Conference paper (Other (popular science, discussion, etc.))
- Johansson, M., Schauerte, T. (2015). Nine storey residential timber construction and the municipal strategy of the city Växjö : [ Neun Geschosse in einem Wohngebiet aus Holz und die kommunale Holzbaustrategie der Stadt Växjö ]. 21. Internationales Holzbau-Forum IHF 2015. 1-10.
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.