Jag är professor i träbyggnadsteknik vid avdelningen för byggteknik.
Undervisning
Inom utbildning undervisar jag i konstruktionsteknik i byggingenjörsprogrammet och i avancerad träbyggnadsteknik i masterprogrammet i byggteknik. Jag är också handledare i ett doktorandprojekt rörande hållfasthetssortering.
Forskning
Inom forskningen arbetar jag främst med frågor kring materialet trä med fokus på kvalitet. Det rör sig kring allt från materialfrågor kring formstabilitet, hållfasthet och styvhet till byggfrågor som förbandsteknik. Inom det nationella SIO-programmet BioInnovation verkar jag som expert team leader för området "Construction & Design".
Mina pågående forskningsprojekt
Mina avslutade forskningsprojekt
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Projekt: Brandteknisk beskrivning av två koncepthus i byggnadsklass Br0 Två koncepthus i byggnadsklass Br0 dimensionerades brandtekniskt, ett i Växjö och ett i Stockholm. De dimensionerades med så…
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Projekt: Design av innovativa modulbaserade flervåningshus i trä Byggande av flervåningshus i trä med lätta regelväggsmoduler är en ny och innovativ konstruktionsmetod, men samtidigt utmanande på…
Publikationer
Artikel i tidskrift (Refereegranskat)
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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: Publicerad -
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: Publicerad -
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 (4). 553-564.
Status: Publicerad -
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 (4). 563-575.
Status: Publicerad -
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: Publicerad -
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 (4). 255-262.
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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: Publicerad -
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 (4). 273-280.
Status: Publicerad -
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 (2). 66-71.
Status: Publicerad -
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.
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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: Publicerad -
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: Publicerad -
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 (2). 239-246.
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Ormarsson, S., Dahlblom, O., Johansson, M. (2010). Numerical study of how creep and stiffness evolution affect the growth stress formation in trees. Trees. 24 (1). 105-115.
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Johansson, M., Ormarsson, S. (2009). Influence of growth stresses and material properties on distortion of sawn timber – Numerical investigation.. Annals of Forest Science. 66 (6).
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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.
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Epmeier, H., Johansson, M., Kliger, R., Westin, M. (2007). Bending creep performance of modified timber. European Journal of Wood and Wood Products. 65 (5).
Status: Publicerad -
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 (2/3). 408-423.
Status: Publicerad
Konferensbidrag (Refereegranskat)
- Landel, P., Johansson, M., Linderholt, A. (2021). Comparative study of wind-induced accelerations in tall timber buildings according to four methods. WCTE 2021, World Conference on Timber Engineering, Santiago, Chile, 9 - 12 August.
- 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.
- 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.
- Landel, P., Linderholt, A., Johansson, M. (2018). Dynamical properties of a large glulam truss for a tall timber building. Presented at the 2018 World Conference on Timber Engineering, Seoul, Republic of Korea, August 20-23, 2018.
- 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.
- 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., 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.
- 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., 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 11th World Conference on Timber Engineering 2010, WCTE 2010, Riva del Garda, Trento, Italy, June 20-24. 1601-1606.
- 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.
- 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.
Kapitel i bok, del av antologi (Refereegranskat)
- 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.
Konferensbidrag (Övrigt vetenskapligt)
- 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.
Kapitel i bok, del av antologi (Övrigt vetenskapligt)
- Serrano, E., Johansson, M. (2016). Förband och anslutningsdetaljer. Limträhandbok : Del 2. Projektering av limträkonstruktioner. Stockholm, Svenskt Trä. 198-227.
Rapport (Övrigt vetenskapligt)
- 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.
Konferensbidrag (Övrigt (populärvetenskap, debatt))
- 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 (Övrigt (populärvetenskap, debatt))
- Olsson, A., Serrano, E., Oscarsson, J., Enquist, B., Johansson, M., et al. (2014). Förfarande och anordning för utvärdering av en bräda av trä.