Lisbeth Hellström

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Publications

Articles in journals

Hellström, L. M. , Biller, S. , Edvardsson, S. & Gradin, P. A. (2014). A theoretical and experimental study of the circular sawing process. Holzforschung, vol. 68: 3, pp. 307-312.  

Isaksson, P. , Gradin, P. A. & Hellström, L. M. (2013). A numerical and experimental study regarding the influence of some process parameters on the damage state in wood chips. Holzforschung, vol. 67: 6, pp. 691-696.  

Lusth, H. , Gradin, P. A. & Hellström, L. M. (2013). A theoretical model for the prediction of energy consumption during the chipper canter process. Nordic Pulp & Paper Research Journal, vol. 28: 2, pp. 211-215.  

Hellström, L. , Carlberg, T. , Engstrand, P. , Gradin, P. & Gregersen, Ø. (2012). Evaluation Of Collimated Chipping Technology For Reducing Energy Consumption In Mechanical Pulping. Journal of Science & Technology for Forest Products and Processes, vol. 2: 3, pp. 6-9.

Lusth, H. , Gradin, P. A. & Hellström, L. M. (2012). The dependency of energy consumption on cutting angles in the canter chipping process. Nordic Pulp & Paper Research Journal, vol. 27: 5, pp. 886-889.    

Hellström, L. , Gradin, P. , Gulliksson, M. & Carlberg, T. (2011). A laboratory wood chipper for chipping under realistic conditions. Experimental mechanics, vol. 51: 8, pp. 1309-1316.  

Hellström, L. , Gradin, P. , Engstrand, P. & Gregersen, Ø. (2011). Properties of wood chips for thermomechanical pulp (TMP) production as a function of spout angle. Holzforschung, vol. 65: 6, pp. 805-809.  

Hellström, L. M. , Isaksson, P. , Gradin, P. A. & Eriksson, K. (2009). An Analytical and Numerical Study of some aspects of the Wood Chipping Process. Nordic Pulp & Paper Research Journal, vol. 24: 2, pp. 225-230.    

Hellström, L. M. , Gradin, P. A. & Carlberg, T. (2008). A Method for Experimental Investigation of the Wood Chipping Process. Nordic Pulp & Paper Research Journal, vol. 23: 3, pp. 339-342.    

Conference papers

Engstrand, P. , Gradin, P. , Hellström, L. , Carlberg, T. , Sandström, P. , Liden, J. , Söderberg, M. & Mats, E. (2016). Improved refining energy efficiency in thermo-mechanical pulping by means of collimated wood chipping – from solid mechanics to full scale evaluation. In PaperWeek Canada 2016 Conference February 1 to 5, 2016, Montreal : Technical Track Program.

Hellström, L. , Carlberg, T. , Engstrand, P. , Gradin, P. & Gregersen, Ø. (2011). Collimated chipping technology in order to reduce the energy consumption in mechanical pulping. In Proceeding for International Mechanical Pulping Conference, Xi'an, P.R. of China.. pp. 457--460.

Hellström, L. & Engstrand, P. (2010). The effect on the energy consumption in mechanical pulping of different wood chipping conditions. In Proceedings of 7th International Seminar of Fundamental Mechanical Pulp Research (IFMPRS 2010).. pp. 124--126.

Hellström, L. M. , Gradin, P. A. & Carlberg, T. (2009). A device for studying wood chipping under realistic conditions. In Proceedings - 2009 International Mechanical Pulping Conference, IMPC 2009. (SPCI meddelande). pp. 252--254.

Hellström, L. M. , Gradin, P. A. & Carlberg, T. (2008). A Study of Fracture processes in Wood Chipping. In 6th Fundamental Mechanical Pulp Research Seminar. Espoo :

Hellström, L. , Gradin, P. & Carlberg, T. (2007). Strain Distribution in Wood During Chipping. In International Mechanical Pulping Conference 2007, TAPPI.. pp. 251--255.

Doctoral theses, comprehensive summaries

Hellström, L. (2010). On the wood chipping process : a study on basic mechanisms in order to optimize chip properties for pulping. Dis. (Comprehensive summary) Sundsvall : Mittuniversitetet, 2010 (Mid Sweden University doctoral thesis : 83)  

Licentiate theses, comprehensive summaries

Hellström, L. (2008). Fracture processes in wood chipping. Lic. (Comprehensive summary) Sundsvall : Mid Sweden University, 2008 (Mid Sweden University licentiate thesis : 32)