Bakgrund

Ph D, Professor of Solid Mechanics

Publikationer

Artiklar i tidskrifter Konferensbidrag Manuskript Rapporter

Artiklar i tidskrifter

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, ss. 307-312.

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, ss. 211-215.

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, ss. 691-696.

Edvardsson, S. , Gradin, P. , Isaksson, P. & Gulliksson, M. (2012). A Note on Wet Paper Web Adhesion Strength. Journal of Testing and Evaluation, vol. 40: 4, ss. 682-686.

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, ss. 886-889.

Hellström, L. , Carlberg, T. , Engstrand, P. , Gradin, P. & Gregersen, Ø. (2012). EVALUATION OF COLLIMATED CHIPPING TECHNOLOGY FOR REDUCING ENERGY CONSUMPTION IN MECHANICAL PULPING. J-For: The Journal of Science and Technology for Forest and Processes, vol. 2: 3, ss. 6-9.

Gradin, P. , Isaksson, P. & Gulliksson, M. (2011). A Note on the Co-linearity of forces and Displacements in an Elastic Structure. Journal of Applied Fluid Mechanics, vol. 78: 6, ss. Art. no. 4003912

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

Edvardsson, S. , Gradin, P. & Isaksson, P. (2011). On dissipative effects of paper web adhesion strength. International Journal of Solids and Structures, vol. 48: 1, ss. 24-30.

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, ss. 805-809.

Isaksson, P. , Gradin, P. & Östlund, S. (2010). A simplified treatise of the Scott bond testing method. Experimental mechanics, vol. 50: 6, ss. 745-751.

Olsen, M. , Gradin, P. , Lindefelt, U. & Olin, H. (2010). Nonharmonic oscillations of nanosized cantilevers due to quantum-size effects. Physical Review B Condensed Matter, vol. 81: 5, ss. 054304

Isaksson, P. & Gradin, P. (2009). Shear buckling in the core of a corrugated board structure. Composite structures, vol. 88: 4, ss. 610-614.

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, ss. 225-230.

Berg, J. , Gulliksson, M. E. & Gradin, P. A. (2009). On the energy consumption for crack development in fibre wall in disc refining - A micromechanical approach. Holzforschung, vol. 63: 2, ss. 204-210.

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.

Norgren, S. , Gradin, P. A. , Nyström, S. & Gullikson, M. (2008). Investigation of the z-direction strength properties of paper by use of acoustic emission monitoring. Journal of Acoustic Emission, vol. 26, ss. 23-31.

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, ss. 339-342.

Gradin, P. , Graham, D. , Nygård, P. & Vallen, H. (2008). The Use of Acoustic Emission Monitoring to Rank Paper Materials With Respect to their Fracture Toughness. Experimental mechanics, vol. 48: 1, ss. 133-137.

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.

Torgnysdotter, A. , Kulachenko, A. , Gradin, P. & Wågberg, L. (2007). The Link Between the Fiber Contact Zone and the Physical Properties of Paper : A Way to Control Paper Properties. Journal of composite materials, vol. 41: 13, ss. 1619-1633.

Kulachenko, A. , Gradin, P. & Uesaka, T. (2007). Basic mechanisms of fluting formation and retention in paper. Mechanics of materials (Print), vol. 39: 7, ss. 643-663.

Torgnysdotter, A. , Kulachenko, A. , Gradin, P. & Wågberg, L. (2007). Fiber/Fiber crosses : Finite Element Modelling and Comparison with Experiment. Journal Of Composite Materials, vol. 41: 13, ss. 1603-1608.

Kulachenko, A. , Gradin, P. & Kuivurova, H. (2007). Modelling the dynamical behaviour of a paper web : Part II. Computers and Structures, vol. 85: 3-4, ss. 148-157.

Kulachenko, A. , Gradin, P. & Kuivurova, H. (2007). Modelling the dynamical behaviour of a paper web : Part I. Computers and Structures, vol. 85: 3-4, ss. 131-147.

Krusper, A. , Isaksson, P. & Gradin, P. A. (2007). Modelling of out-of-plane compression loading of corrugated paper board structures. Journal of engineering mechanics, vol. 133: 11, ss. 1171-1177.

Isaksson, P. , Krusper, A. & Gradin, P. A. (2007). Shear correction factors for corrugated core structures. Composite structures, vol. 80: 1, ss. 123-130.

Batchelor, W. J. , Westerlind, B. S. , Hägglund, R. & Gradin, P. (2006). Effect of test conditions on measured loads and displacements in zero-span testing. TAPPI Journal, vol. 5: 10, ss. 3-8.

Isaksson, P. , Kulachenko, A. & Gradin, P. A. (2006). The onset and progression of damage in isotropic paper sheets. International Journal of Solids and Structures, vol. 43: 3-4, ss. 713-726.

Kulachenko, A. , Gradin, P. A. & Westerlind, B. (2005). Analysis of Paper Web Tension Profiles. Journal of Graphic Technology, : 2, ss. 72-81.

Isaksson, P. & Gradin, P. A. (2005). A bending specimen for constant energy release rate under controlled displacement conditions. Engineering Fracture Mechanics, vol. 72: 11, ss. 1770-1775.

Isaksson, P. , Hägglund, R. & Gradin, P. (2004). Continuum damage mechanics applied to paper. International Journal of Solids and Structures, vol. 41: 16-17, ss. 4731-4755.

Hägglund, R. , Gradin, P. & Tarakameh, D. (2004). Some Aspects on the Zero-span tensile test. Experimental mechanics, vol. 44: 4, ss. 365-374.

Semb, G. , Gradin, P. & Hällgren, I. (2003). An Analytical Study of a Composite Dove Tail Joint. Journal of Composite Materials, vol. 37: 2, ss. 99-109.

Semb, G. & Gradin, P. A. (2002). Stresses and Strains in a Race Track Strap with a radical clearance. International Journal of Solids and Structures, vol. 39: 3, ss. 699-708.

Widehammar, S. , Gradin, P. & Lundberg, B. (2001). Approximate determination of Dispersion Relations and Displacement Fields Associated With Elastic Waves in Bars. Journal of Sound and Vibration, vol. 246: 5, ss. 853-876.

Berg, J. & Gradin, P. A. (2000). Effect of Temperature on Fracture of Spruce in Compression, Investigated by Use of Acoustic Emission Monitoring. Journal of Pulp and Paper Science, vol. 26: 8, ss. 294-299.

Berg, J. & Gradin, P. A. (1999). A Micromechanical Model of the Deterioration of a Wood Fibre. Journal of Pulp and Paper Science, vol. 25: 2, ss. 66-71.

Gradin, P. A. , Johansson, O. , Berg, J. & Nyström, S. (1999). Measurement of the Power Distribution in a Single Disc Refiner. Journal of Pulp and Paper Science, vol. 25: 11, ss. 384-387.

Gradin, P. , Berg, J. & Nyström, S. (). Measuring Tangential Forces in a Pulp Refiner : A Novel Approach. Experimental techniques (Westport, Conn.),

Konferensbidrag

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

Gradin, P. , Berg, J. , Gulliksson, M. & Nyström, S. (2011). Measuring forces in a refiner plate gap. I Proceedings of International Mechanical Pulping Conference.. S. 81--83.

Norgren, S. & Gradin, P. (2009). Using acoustic emission monitoring to evaluate the through the thickness and in plane strength properties. I Proceedings - 2009 International Mechanical Pulping Conference, IMPC 2009.. S. 298--303.

Berg, J. & Gradin, P. A. (2009). Fibre wall crack development. I Proceedings - 2009 International Mechanical Pulping Conference, IMPC 2009. (SPCI meddelande). S. 340--343.

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

Norgren, S. , Gradin, P. , Nyström, S. & Gulliksson, M. (2008). Investigation of the Z-direction strength properties of paper by use of acoustic emission monitoring. I 28th European conferance on acoustic emission testing.. S. 238--243.

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

Isaksson, P. , Gradin, P. & Östlund, S. (2007). A simplified treatise of the Scott bond testing method. I Proceedings of the 2007 International Paper Physics Conference, May 6-11, 2007, Gold Coast, Qld, Australia, 1-6, 2007.

Hellström, L. , Gradin, P. & Carlberg, T. (2007). Strain Distrbution in Wood During Chipping. I International Mechanical Pulping Conference, Minneapolis, May 2007.

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, Minneapolis, USA..

Kulachenko, A. , Gradin, P. A. & Uesaka, T. (2006). Basic mechanisms of fluting. I 92nd Annual Meeting Preprints-Book A, 7 Feb. 2006 , Canada. Que., Canada : . S. 161--173.

Kulachenko, A. , Gradin, P. & Uesaka, T. (2005). The effect of local moisture variations on fluting in heatset web offset printing. I Proc. of 5th Biennial Johan Gullichsen Colloquium.

Kulachenko, A. , Gradin, P. & Uesaka, T. (2005). Tension wrinkling and fluting in heatset web offset printing process : post buckling analysis. I Advances in Paper Science and Technology : Transactions of the 13th fundamental research symposium, Vols 1-3.. S. 1075--1099.

Torgnysdotter, A. , Kulachenko, A. , Gradin, P. & Wågberg, P. (2004). Modification of the Contact Zone to Control the Physical Behaviour of Paper - A Model Experiment : Pappersfysik konferens i Trondheim ?. .

Gradin, P. A. , Isaksson, P. , Nyström, S. K. , Graham, D. , Kao, D. & Knight, B. (2004). Acoustic Emission applied to mechanically loaded Paper. I EWGAE (European Working Group on Acoustic Emission) 2004 proceedings.. S. 423--431.

Isaksson, P. , Hägglund, R. & Gradin, P. (2003). A continuum damage elastic-plastic model for packaging paper. I 2003 International Paper Physics Conference.. S. 207--210.

Backlund, H. , Höglund, H. & Gradin, P. (2003). Study of tangential forces and temperature profiles in commercial refiners. I 2003 International Mechanical Pulping Conference.. S. 379--388.

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.

Berg, J. & Gradin, P. (1995). Effect of Temperature on Fracture of Spruce in Compression Using Acoustic Emissions. I AECM-5, Fifth International Symposium on Acoustic Emission From Composite Material. Columbus, OH, USA : . S. 139--148.

Manuskript

Norgren, S. , Gradin, P. , Höglund, H. & Isaksson, P. Acoustic emission monitoring to evaluate the z-direction and in-plane strength properties of TMP reject fraction

Isaksson, P. , Gradin, P. A. & Kulachenko, A. Acoustic Emission applied to mechanically loaded Paper ??

Rapporter

Kulachenko, A. , Gradin, P. A. & Uesaka, T. (2006). Basic mechanisms of fluting formation and retention in paper. Sundsvall : Mittuniversitetet, FSCN (Rapportserie FSCN 2006:36) (FSCN-rapport R-06-65)

Gradin, P. A. (2004). Acoustic emission monitoring during mechanical-loading of paper : State of the art. Sundsvall : Mitthögskolan, FSCN (Rapportserie FSCN 2004:28) (FSCN-rapport R-04-55)