Birgitta Engberg

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Bakgrund

Ph D, Research Engineer

My professional interests concern education and research that has a close connection to technical applications. My area of research is within Mechanical Fibre Technology and the challenges we have there - reducing electric energy consumption in refining drastically and finding new products based on mechanical pulps.

Forskningsområden

High yield pulping technology
Wood mechanics

Publikationer

Artiklar i tidskrifter

Moilanen, C. , Björkqvist, T. , Ovaska, M. , Koivisto, J. , Miksic, A. , Engberg, B. A. , Salminen, L. I. , Saarenrinne, P. & et al. (2017). Influence of strain rate, temperature and fatigue on the radial compression behaviour of Norway spruce. Holzforschung, vol. 71: 6, ss. 505-514.  

Moilanen, C. S. , Björkqvist, T. , Engberg, B. A. , Salminen, L. I. & Saarenrinne, P. (2016). High strain rate radial compression of Norway spruce earlywood and latewood. Cellulose (London), vol. 23: 1, ss. 873-889.  

Moilanen, C. S. , Saarenrinne, P. , Engberg, B. A. & Björkqvist, T. (2015). Image-based stress and strain measurement of wood in the split-Hopkinson pressure bar. Measurement science and technology, vol. 26: 8  

Berg, J. , Sandberg, C. , Engberg, B. A. & Engstrand, P. (2015). Low-consistency refining of mechanical pulp in the light of forces on fibres. Nordic Pulp & Paper Research Journal, vol. 30: 2, ss. 225-229.    

Salmi, A. , Salminen, L. I. , Engberg, B. A. , Bjorkqvist, T. & Haeggstrom, E. (2012). Repetitive impact loading causes local plastic deformation in wood. Journal of Applied Physics, vol. 111: 2, ss. Art. no. 024901  

Björkqvist, T. , Engberg, B. A. , Salminen, L. I. & Salmi, A. (2012). Towards optimal defibration : Energy reduction by fatiguing pre-treatment. Nordic Pulp & Paper Research Journal, vol. 27: 2, ss. 168-172.    

Svensson, B. A. , Nyström, S. K. , Gradin, P. A. & Höglund, H. (2009). Frictional testing of wood : Initial studies with a new device. Tribology International, vol. 42: 1, ss. 190-196.  

Holmgren, S. , Svensson, B. A. , Gradin, P. A. & Lundberg, B. (2008). An Encapsulated Split Hopkinson Pressure Bar for Testing of Wood at Elevated Strain Rate, Temperature and Pressure. Experimental techniques (Westport, Conn.), vol. 32: 5, ss. 44-50.  

Svensson, B. , Vesterlind, E. & Höglund, H. (2007). Frictional properties of native and chemically modified birch wood. Nordic Pulp & Paper Research Journal, vol. 22: 3, ss. 325-330.    

Svensson, B. , Rundlöf, M. & Höglund, H. (2006). Sliding Friction Between Wood and Steel in a Saturated Steam Environment. Journal of Pulp and Paper Science (JPPS), vol. 32: 1, ss. 38-43.

Svensson, B. (2006). Friktionens inverkan på energiförbrukning vid mekanisk massaframställning. Nordisk Papper & Massa, vol. 7: 6, ss. 20-22.

Nelsson, E. , Sandberg, C. , Svensson-Rundlöf, E. , Muhic, D. , Engberg, B. A. & Engstrand, P. (). Substantially improved energy efficiency in mechanical pulping by new feeding segment design and low dosage sulfonation in mill scale. ,

Doktorsavhandlingar, sammanläggningar

Svensson, B. (2007). Frictional studies and high strain rate testing of wood under refining conditions. Diss. (Sammanläggning) Sundsvall : Mittuniversitetet, 2007 (Mid Sweden University doctoral thesis : 31)  

Konferensbidrag

Nelsson, E. , Sandberg, C. , Svensson-Rundlöf, E. , Paulsson, M. , Granfeldt, T. , Engberg, B. & Engstrand, P. (2016). Mill scale production of TMP with double disk refining-The effects of a mild sulfonation, atmospheric preheating and refining temperatures. I International Mechanical Pulping Conference 2016, IMPC 2016.. S. 249--259.

Moilanen, C. , Biörkgvist, T. , Ovaska, M. , Koivisto, J. , Miksic, A. , Engberg, B. , Salminen, L. , Saarenrinne, P. & et al. (2016). Modelling and simulation of radial spruce compression to optimize energy efficiency in mechanical pulping. I International Mechanical Pulping Conference 2016, IMPC 2016.. S. 18--35.

Berg, J. , Sandberg, C. , Engberg, B. & Engstrand, P. (2014). LC Refining Intensity In The Light Of Forces On Fibres. I International Mechanical Pulping Conference, IMPC 2014. Espoo :

Engberg, B. , Logenius, L. & Engstrand, P. (2014). Mechanical properties of sulphonated wood in relation to wing refiner properties. I International Mechanical Pulping Conference, IMPC 2014. Espoo :

Nelsson, E. , Sandberg, C. , Svensson-Rundlöf, E. , Muhic, D. , Rohdén, L. , A. Engberg, B. & Engstrand, P. (2014). Improved energy efficiency in thermomechanical pulping through co-optimixation of intensity by segment design and wood softening by sulfonation. I International mechanical pulping conference IMPC 2014.

Moilanen, C. , Engberg, B. A. , Björkqvist, T. , Salminen, L. & Saarenrinne, P. (2014). Local compression behaviour of pre-fatigured and chemically pre-treated wood at high strain rate and high temperature. Paper presented at the International Mechanical Pulping Conference, IMPC 2014; Helsinki; Finland; 2 June 2014 through 5 June 2014; Code 109275

Moilanen, C. S. , Saarenrinne, P. , Engberg, B. & Björkqvist, T. (2013). Image Based local strain measurement of wood. I Conference Proceedings of the Society for Experimental Mechanics Series.  

Logenius, L. , Engberg, B. A. , Nelsson, E. & Engstrand, P. (2013). Mechanical testing methods for evaluation of the mechanical properties of sulphonated wood. Paper presented at the The 17th International Symposium on Wood, Fiber and Pulping Chemistry; Vancouver, Canada; 12-14 June 2013

Logenius, L. , Engberg, B. A. , Fjellström, H. & Engstrand, P. (2013). Mechanical Properties of Sulphonated Spruce Wood. Paper presented at the 8th Fundamental mechanical pulping research seminar

Engberg, B. & Berg, J. (2011). A comparative study of models describing high consistency refining. I Proceedings of International Mechanical Pulping Conference.. S. 96--100.

Salminen, L. , Salmi, A. , Engberg, B. A. , Björkqvist, T. , Haeggström, E. & Lucander, M. (2011). Cyclic loading and fatigue of wood. I Progress in Paper Physics Seminar2011 : Conference Proceedings.. S. 243--245.  

Salmi, A. , Salminen, L. I. , Montonen, R. , Engberg, B. A. , Björkqvist, T. , Haeggström, E. & Lucander, M. (2011). Cyclic impacting of wood results in localized fatigue. I Proceedings of International Mechanical Pulping Conference 2011 (Xi'an, China 2011).

Engberg, B. A. , Salminen, L. I. , Salmi, A. & Björkqvist, T. (2009). On the importance of fatigue for the rheological properties of wood. I Proceedings - 2009 International Mechanical Pulping Conference, IMPC 2009.. S. 239--244.

Saari, V. , Björkqvist, T. & Engberg, B. A. (2009). Strain distribution in annual rings under compression by high speed photography. I Proceedings - 2009 International Mechanical Pulping Conference, IMPC 2009.. S. 245--251.

Svensson, B. A. , Holmgren, S. , Gradin, P. A. & Höglund, H. (2007). High Strain Rate Compression and Sliding Friction of Wood under Refining Conditions. I International Mechanical Pulping Conference 2007, TAPPI.. S. 983--994.

Svensson, B. , Rundlöf, M. & Höglund, H. (2005). Sliding friction between wood and steel in a saturated steam environment. I International Mechanical Pulping Conference: IMPC 2005 : Oslo, Norway, 7-9 June 2005.. S. 31--37.

Svensson, B. (2004). Tribology under refining conditions. I Proceedings of the 4th Fundamental Mechanical Pulp Seminar : June 7-8, 2004, Stocholm, Sweden.

Svensson, B. , Nyström, S. K. , Gradin, P. , Bergfors, E. & Höglund, H. (2003). Tribology under refining conditions : initial studies sevo motor. I 2003 International Mechanical Pulping Conference.. S. 233--237.

Rapporter

Engstrand, P. O. & Engberg, B. A. (2014). Filling the Gap - Final Report. Sundsvall : (Rapportserie FSCN 2014:57)