Lars Hansson
About
Lars Hansson has a MSc in Engineering Physics, and a PhD on the subject Wood Physics from the Luleå University of Technology, Sweden.
Fields of interest and present research activities
My research has been focused on a new unique equipment; a CT scanner in combination with a climate chamber. By using X-ray computed tomography, non-destructive studies of internal or surface checking has been performed.
Furthermore, physical properties of wood, especially moisture related properties and how these are affected by drying and heat treatment has also been studied by me. Since the measurement result from the CT scanner is density images I have been working with developing image processing methods to calculate density variations and thus particularly suitable for in situ studies of moisture flow in wood during drying and heat treatment. I have also been working in a small multiphysics simulation research project to make simulation models for two different microwave scanners.
On behalf of the wood industry I have done two projects with the purpose to improve the drying and heat treatment process respectively.
Planned research in the field of wood physics is to further develop image processing tools to monitor the dimensional changes during the drying and heat treatment process. Also further collaboration project with the wood industry and other research groups.
Recent Work Experience
-
2017- Associate Professor, Department of Ocean Operations and Civil Engineering, Graduate and undergraduate teaching
-
2015- Associate Professor 20%, Department of Engineering Sciences and Mathematics, Wood Science and Engineering, Luleå University of Technology (LTU), Research.
- 2012-2017 Associate Professor, Dept of ICT and Natural Sciences (previously Høyskolen i Ålesund), Graduate and undergraduate teaching
- 2013-2014 Associate Professor, Luleå University of Technology
- 2011-2013 Associate senior lecturerer, Luleå University of Technology
- 2010-2011 Postdoctoral research fellow, Luleå University og Technology
Competencies
Publications
2025
-
Larsson, Maria;
Yamaguchi, Hodaka;
Pajouheshgar, Ehsan;
Shen, I-Chao;
Tojo, Kenji;
Chang, Chia-Ming.
(2025)
The Mokume Dataset and Inverse Modeling of Solid Wood Textures.
ACM Transactions on Graphics
Academic article
2024
-
Priyashantha, Hasitha;
Hansson, Lars ;
Forsman, Peter;
Lundh, Åse;
Hetta, Mårten.
(2024)
Computed tomography (CT) scanning to visualize eye formation and internal structure in Grevé cheese.
Heliyon
Academic article
-
Hansson, Lars ;
Vikberg, Tommy.
(2024)
Exploring the Potential of CT Image Processing Analysis for Assessing Capillary Flow in Pine Wood Logs.
Pro Ligno
Academic article
-
Hajian, Ebrahim;
Huber, Johannes;
Hansson, Lars ;
Sandberg, Dick.
(2024)
High temperature drying of sawn timber—A review.
Drying Technology
Academic article
2023
-
Hajian, Ebrahim;
Couceiro, José;
Hansson, Lars ;
Sandberg, Dick.
(2023)
Drying Behaviour of Western Hemlock with Schedules Developed for Norway Spruce and Scots Pine.
Applied Sciences
Academic article
-
Couceiro, José;
Lin, Chia-feng;
Hansson, Lars ;
Schleicher, Frank;
Svensson, Mikael;
Jones, Dennis.
(2023)
Use of X-ray computed tomography for real-time studies of the fire progress in wood.
Wood Material Science & Engineering
Academic article
2022
-
Sara, Forisson;
Hansson, Lars ;
Jose, Couceiro;
Dick, Sandberg.
(2022)
Macroscopic X-ray computed tomography aided numerical modelling of moisture flow in sawn timber.
European Journal of Wood and Wood Products
Academic article
2021
-
Huber, Johannes;
Ekevad, Mats;
Broman, Olof;
Oja, Johan;
Hansson, Lars .
(2021)
A Method for Generating Finite Element Models of Wood Boards from X-Ray Computed Tomography Scans.
Computers & structures
Academic article
-
Lunde, Arnhild;
Hansson, Lars .
(2021)
Tverrfagleg samarbeid i matematikk og mekanikk med aktiv studentdeltaking.
Nordic Journal of STEM Education
Academic article
2020
-
Couceiro, José;
Hansson, Lars ;
Sehlstedt-Persson, Margot;
Vikberg, Tommy;
Sandberg, Dick.
(2020)
The conditioning regime in industrial drying of Scots pine sawn timber studied by X-ray computed tomography - A case-study.
European Journal of Wood and Wood Products
Academic article
-
Golubevas, Ricardas;
Stankeviciute, Zivile;
Zarkov, Aleksej;
Golubevas, Raimundas;
Hansson, Lars ;
Raudonis, Rimantas.
(2020)
Acrylate–gelatin–carbonated hydroxyapatite (cHAP) composites for dental bone-tissue applications.
Materials Advances
Academic article
2019
-
Jose, Couceiro;
Lindgren, Owe;
Hansson, Lars ;
Söderström, Ove;
Sandberg, Dick.
(2019)
Real-time wood moisture-content determination using dual-energy X-ray computed tomography scanning.
Wood Material Science & Engineering
Academic article
2017
-
Hansson, Lars ;
Couceiro, José;
Fjellner, Bengt-Arne.
(2017)
Estimation of shrinkage coefficients in radial and tangential directions from CT images.
Wood Material Science & Engineering
Academic article
-
Couceiro, José;
Sehlstedt-Persson, Margot;
Hansson, Lars ;
Hagman, Olle;
Sandberg, Dick.
(2017)
CT Scanning of Capillary Phenomena in Bio-Based Materials.
Pro Ligno
Academic article
2013
-
Ahmed, Sheikh Ali;
Hansson, Lars ;
Morén, Tom.
(2013)
Distribution of preservatives in thermally modified Scots pine and Norway spruce sapwood.
Wood Science and Technology
Academic article
-
Ahmed, Sheikh Ali;
Sehlstedt-Persson, Margot;
Hansson, Lars ;
Morén, Tom.
(2013)
Evaluation of preservative distribution in thermally modified European aspen and birch boards using computed tomography and scanning electron microscopy.
Journal of Wood Science
Academic article
-
Hansson, Lars;
Fjellner, Bengt-Arne.
(2013)
Wood shrinkage coefficient and dry weight moisture content estimations from CT-images.
Pro Ligno
Academic article
2012
-
Cherepanova, Ekaterina;
Hansson, Lars .
(2012)
Determination of wood moisture properties using CT-scanner in a controlled high-temperature environment.
Journal of Civil Engineering and Architecture
Academic article
-
Vikberg, Tommy;
Hansson, Lars ;
Schajer, Gary;
Oja, Johan.
(2012)
Effects on microwave measurements and simulations when collecting data close to edges of wooden boards.
Measurement
Academic article
-
Hansson, Lars ;
Cherepanova, Ekaterina.
(2012)
Determination of wood moisture properties using a CT-scanner in a controlled low-temperature environment.
Wood Material Science & Engineering
Academic article
2011
-
Hansson, Lars ;
Cherepanova, Ekaterina;
Morén, Tom.
(2011)
CT-scanning during heat treatment of wood.
Pro Ligno
Academic article
2010
-
Antti, Lena;
Hansson, Lars .
(2010)
Equalization of moisture in pre-dried pinewood using microwave power.
Pro Ligno
Academic article
2008
-
Hansson, Lars ;
Antti, Lena.
(2008)
Modeling microwave heating and moisture redistribution in wood.
Drying Technology
Academic article
2007
-
Hansson, Lars .
(2007)
Microwave treatment of wood.
Luleå tekniska universitet
Luleå tekniska universitet
Doctoral dissertation
2006
-
Hansson, Lars ;
Antti, Lena.
(2006)
The effect of drying method and temperature level on the hardness of wood.
Journal of Materials Processing Technology
Academic article
-
Hansson, Lars ;
Lundgren, Nils;
Antti, Lena;
Hagman, Olle.
(2006)
Finite element modeling (FEM) simulation of interactions between wood and microwaves.
Journal of Wood Science
Academic article
2005
-
Hansson, Lars ;
Lundgren, Nils;
Antti, Lena;
Hagman, Olle.
(2005)
Microwave penetration in wood using imaging sensor.
Measurement
Academic article
2003
-
Hansson, Lars ;
Antti, A.L..
(2003)
The effect of microwave drying on Norway spruce woods strength : a comparison with conventional drying.
Journal of Materials Processing Technology
Academic article
-
Hansson, Lars .
(2003)
Controlling microwave heating and its effect on the properties of wood.
Licentiate thesis (Luleå tekniska universitet) (72)
Licentiate dissertation
2002
-
Hansson, Lars .
(2002)
Styrprogram för temperaturhållning av last i mikrovågsugn.
Luleå tekniska universitet
Luleå tekniska universitet
Report
-
Hansson, Lars ;
Antti, Lena;
Morén, Tom.
(2002)
IR- och HFV-teknik för virkestorkning.
Luleå tekniska universitet
Luleå tekniska universitet
Report
Journal publications
-
Larsson, Maria;
Yamaguchi, Hodaka;
Pajouheshgar, Ehsan;
Shen, I-Chao;
Tojo, Kenji;
Chang, Chia-Ming.
(2025)
The Mokume Dataset and Inverse Modeling of Solid Wood Textures.
ACM Transactions on Graphics
Academic article
-
Priyashantha, Hasitha;
Hansson, Lars ;
Forsman, Peter;
Lundh, Åse;
Hetta, Mårten.
(2024)
Computed tomography (CT) scanning to visualize eye formation and internal structure in Grevé cheese.
Heliyon
Academic article
-
Hansson, Lars ;
Vikberg, Tommy.
(2024)
Exploring the Potential of CT Image Processing Analysis for Assessing Capillary Flow in Pine Wood Logs.
Pro Ligno
Academic article
-
Hajian, Ebrahim;
Huber, Johannes;
Hansson, Lars ;
Sandberg, Dick.
(2024)
High temperature drying of sawn timber—A review.
Drying Technology
Academic article
-
Hajian, Ebrahim;
Couceiro, José;
Hansson, Lars ;
Sandberg, Dick.
(2023)
Drying Behaviour of Western Hemlock with Schedules Developed for Norway Spruce and Scots Pine.
Applied Sciences
Academic article
-
Couceiro, José;
Lin, Chia-feng;
Hansson, Lars ;
Schleicher, Frank;
Svensson, Mikael;
Jones, Dennis.
(2023)
Use of X-ray computed tomography for real-time studies of the fire progress in wood.
Wood Material Science & Engineering
Academic article
-
Sara, Forisson;
Hansson, Lars ;
Jose, Couceiro;
Dick, Sandberg.
(2022)
Macroscopic X-ray computed tomography aided numerical modelling of moisture flow in sawn timber.
European Journal of Wood and Wood Products
Academic article
-
Huber, Johannes;
Ekevad, Mats;
Broman, Olof;
Oja, Johan;
Hansson, Lars .
(2021)
A Method for Generating Finite Element Models of Wood Boards from X-Ray Computed Tomography Scans.
Computers & structures
Academic article
-
Lunde, Arnhild;
Hansson, Lars .
(2021)
Tverrfagleg samarbeid i matematikk og mekanikk med aktiv studentdeltaking.
Nordic Journal of STEM Education
Academic article
-
Couceiro, José;
Hansson, Lars ;
Sehlstedt-Persson, Margot;
Vikberg, Tommy;
Sandberg, Dick.
(2020)
The conditioning regime in industrial drying of Scots pine sawn timber studied by X-ray computed tomography - A case-study.
European Journal of Wood and Wood Products
Academic article
-
Golubevas, Ricardas;
Stankeviciute, Zivile;
Zarkov, Aleksej;
Golubevas, Raimundas;
Hansson, Lars ;
Raudonis, Rimantas.
(2020)
Acrylate–gelatin–carbonated hydroxyapatite (cHAP) composites for dental bone-tissue applications.
Materials Advances
Academic article
-
Jose, Couceiro;
Lindgren, Owe;
Hansson, Lars ;
Söderström, Ove;
Sandberg, Dick.
(2019)
Real-time wood moisture-content determination using dual-energy X-ray computed tomography scanning.
Wood Material Science & Engineering
Academic article
-
Hansson, Lars ;
Couceiro, José;
Fjellner, Bengt-Arne.
(2017)
Estimation of shrinkage coefficients in radial and tangential directions from CT images.
Wood Material Science & Engineering
Academic article
-
Couceiro, José;
Sehlstedt-Persson, Margot;
Hansson, Lars ;
Hagman, Olle;
Sandberg, Dick.
(2017)
CT Scanning of Capillary Phenomena in Bio-Based Materials.
Pro Ligno
Academic article
-
Ahmed, Sheikh Ali;
Hansson, Lars ;
Morén, Tom.
(2013)
Distribution of preservatives in thermally modified Scots pine and Norway spruce sapwood.
Wood Science and Technology
Academic article
-
Ahmed, Sheikh Ali;
Sehlstedt-Persson, Margot;
Hansson, Lars ;
Morén, Tom.
(2013)
Evaluation of preservative distribution in thermally modified European aspen and birch boards using computed tomography and scanning electron microscopy.
Journal of Wood Science
Academic article
-
Hansson, Lars;
Fjellner, Bengt-Arne.
(2013)
Wood shrinkage coefficient and dry weight moisture content estimations from CT-images.
Pro Ligno
Academic article
-
Cherepanova, Ekaterina;
Hansson, Lars .
(2012)
Determination of wood moisture properties using CT-scanner in a controlled high-temperature environment.
Journal of Civil Engineering and Architecture
Academic article
-
Vikberg, Tommy;
Hansson, Lars ;
Schajer, Gary;
Oja, Johan.
(2012)
Effects on microwave measurements and simulations when collecting data close to edges of wooden boards.
Measurement
Academic article
-
Hansson, Lars ;
Cherepanova, Ekaterina.
(2012)
Determination of wood moisture properties using a CT-scanner in a controlled low-temperature environment.
Wood Material Science & Engineering
Academic article
-
Hansson, Lars ;
Cherepanova, Ekaterina;
Morén, Tom.
(2011)
CT-scanning during heat treatment of wood.
Pro Ligno
Academic article
-
Antti, Lena;
Hansson, Lars .
(2010)
Equalization of moisture in pre-dried pinewood using microwave power.
Pro Ligno
Academic article
-
Hansson, Lars ;
Antti, Lena.
(2008)
Modeling microwave heating and moisture redistribution in wood.
Drying Technology
Academic article
-
Hansson, Lars ;
Antti, Lena.
(2006)
The effect of drying method and temperature level on the hardness of wood.
Journal of Materials Processing Technology
Academic article
-
Hansson, Lars ;
Lundgren, Nils;
Antti, Lena;
Hagman, Olle.
(2006)
Finite element modeling (FEM) simulation of interactions between wood and microwaves.
Journal of Wood Science
Academic article
-
Hansson, Lars ;
Lundgren, Nils;
Antti, Lena;
Hagman, Olle.
(2005)
Microwave penetration in wood using imaging sensor.
Measurement
Academic article
-
Hansson, Lars ;
Antti, A.L..
(2003)
The effect of microwave drying on Norway spruce woods strength : a comparison with conventional drying.
Journal of Materials Processing Technology
Academic article
Part of book/report
-
Hansson, Lars .
(2003)
Controlling microwave heating and its effect on the properties of wood.
Licentiate thesis (Luleå tekniska universitet) (72)
Licentiate dissertation
Report
-
Hansson, Lars .
(2007)
Microwave treatment of wood.
Luleå tekniska universitet
Luleå tekniska universitet
Doctoral dissertation
-
Hansson, Lars .
(2002)
Styrprogram för temperaturhållning av last i mikrovågsugn.
Luleå tekniska universitet
Luleå tekniska universitet
Report
-
Hansson, Lars ;
Antti, Lena;
Morén, Tom.
(2002)
IR- och HFV-teknik för virkestorkning.
Luleå tekniska universitet
Luleå tekniska universitet
Report
Outreach
2023
-
Academic lecturePoupet, Boris; Coucerio, Jose; Florisson, Sara; Hansson, Lars . (2023) Estimation of moisture distribution in sawn timber using computed tomography. WCT World Conference on Timber Engineering 2023 , Oslo 2023-06-19 - 2023-06-22
-
Academic lectureRodrigues, Quentin; Huber, Johannes; Hansson, Lars ; Mensah, Rhoda Afriyie. (2023) Using X-Ray Computed Tomography To Measure Fire Degradation Of A Timber Connection. WCTE World Conference on Timber Engineering 2023 (WCTE 2023) 2023-06-19 - 2023-06-22
2022
-
Academic lectureCouceiro, José; Hansson, Lars ; Mannes, David; Peter, Niemz. (2022) Estimation of the moisture content in wood by combination of Neutron and X-ray imaging. 22nd International Nondestructive Testing and Evaluation of Wood Symposium 2022-05-24 -
2020
-
Academic lectureGarskaite, Edita; Brazinskiene, Dalia; Asadauskas, Svajus; Hansson, Lars ; Sandberg, Dick. (2020) Flammability and Tribological Properties of Pine Sapwood, Reinforced with Sodium Metasilicate and Non-food Oil . 9th International Conference on Wood & Fire Safety 2020 (WFS 2020) 2020-05-03 - 2020-05-06
2019
-
Academic lectureCouceiro, José; Hansson, Lars ; Sandberg, Dick. (2019) Dual-energy X-ray absorptiometry for measuring moisture content in wood – Is it possible?. 21st International Nondestructive Testing and Evaluation of Wood Symposium, Freiburg, Baden-Württemberg, Germany, September 24–27 2019-09-24 - 2019-09-27
2018
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LectureCouceiro, José; Hansson, Lars ; Sandberg, Dick; Ahec, Ambroz. (2018) CT-scanning of the drying process of Eucalyptus nitens. IDS’2018 – 21st International Drying Symposium 2018-09-11 - 2018-09-14
-
PosterCouceiro, José; Hansson, Lars ; Sehlstedt-Persson, Margot; Sandberg, Dick. (2018) CT-STUDIES OF THE CONDITIONING PHASE OF THE WOOD DRYING PROCESS. IDS’2018 – 21st International Drying Symposium 2018-09-11 - 2018-09-14
2017
-
Academic lectureJose, Couceiro; Margot, Sehlstedt-Persson; Hansson, Lars ; Olle, Hagman; Dick, Sandberg. (2017) CT SCANNING OF CAPILLARY PHENOMENA IN BIO-BASED MATERIALS. The 11th International Conference “WOOD SCIENCE AND ENGINEERING IN THE THIRD MILLENNIUM” 2017-11-02 - 2017-11-04
2016
-
Academic lectureCouceiro, José; Hansson, Lars ; Sandberg, Dick. (2016) In situ CT-scanning for detection of internal checking and cell collapse during drying of hardwood species. The 7th European Conference on Hardwood, Eco-efficient resource wood with special focus on hardwoods 2016-09-08 - 2016-09-09
-
Academic lectureCouceiro, José; Hansson, Lars ; Sehlstedt-Persson, Margot; Sandberg, Dick. (2016) The use of X-ray computed tomography in timber construction. New Horizons for the Forest Products Industry: 70th Forest Products Society International Convention , Portland, Oregon 2016-06-26 - 2019-06-26
-
Academic lectureCouceiro, José; Vikberg, Tommy; Hansson, Lars ; Morén, Tom. (2016) In Situ CT-Scanning of Checking and Collapse Behaviour of Eucalyptus nitens During Drying. The 59th International Convention of Society of Wood Science and Technology 2016-03-06 - 2016-03-10
2012
-
LectureVikberg, Tommy; Hansson, Lars ; Sterley, Magdalena. (2012) Moisture movements during drying of green glued glulam beams from Norway spruce sideboards. International IUFRO Wood Drying Conference 2012-07-30 - 2012-08-03
2011
-
Academic lectureCherepanova, Ekaterina; Hansson, Lars . (2011) Determination of wood moisture properties using CT-scanner in a controlled environment. Norsk institutt for skog og landskap The 7th meeting of the Nordic-Baltic Network in Wood Material Science and Engineering (WSE) , Oslo 2011-10-27 - 2011-10-28
2010
-
Academic lectureAntti, Lena; Hansson, Lars . (2010) Redistribution of moisture in pre-dried pinewood using microwave power: a preliminary study. 11th International IUFRO Wood Drying Conference , Skellefteå 2010-01-18 - 2010-01-22
2007
-
Academic lectureLundgren, Nils; Hansson, Lars . (2007) PLS models for predicting wood properties from microwave measurements based on three dimensional FEM simulations. The Nordic Workshop in Wood Engineering , Luleå 2007-02-21 -
2006
-
Academic lectureAntti, Lena; Hansson, Lars . (2006) Microwave treatment of resinous wood. The 5th IUFRO Symposium Wood Structure and Properties 2006-09-03 - 2006-09-06
2005
-
Academic lectureHansson, Lars ; Lundgren, Nils; Antti, Lena; Hagman, Olle. (2005) FEM simulation of heating wood in an industrial microwave applicator. 10th International Conference on Microwave and High Frequency Heating , Modena 2005-09-12 - 2005-09-15
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Academic lectureLundgren, Nils; Hansson, Lars ; Hagman, Olle; Antti, Lena. (2005) FEM simulation of interactions between microwaves and wood during thawing. Conference on mathematical modeling of wave phenomea , Växjö 2005-08-14 - 2005-08-19
2003
-
Academic lectureHansson, Lars ; Antti, Lena. (2003) Design and performance of an industrial microwave drier for on-line drying of wood components. Faculty of Wood Industry The 8th IUFRO International Wood Drying Conference , Brasov 2003-08-24 - 2003-08-29