, Volume 23, Issue 1, pp 873–889 | Cite as

High strain rate radial compression of Norway spruce earlywood and latewood

  • Carolina S. MoilanenEmail author
  • Tomas Björkqvist
  • Birgitta A. Engberg
  • Lauri I. Salminen
  • Pentti Saarenrinne
Original Paper


The mechanical properties of Norway spruce were studied and a compression model for mechanical pulping was developed. The split-Hopkinson pressure bar technique was combined with high-speed photography to analyse local radial compression. Data analysis focussed on the differences between mechanical properties of earlywood and latewood. Measurements were conducted at both room temperature and 135 °C. The effect of pre-fatigue treatment was also studied. A simple material model was defined linearly in parts and fitted to the measurement data to quantify the differences. New results were found on the differences in inelastic behaviour of earlywood and latewood at large deformations. In addition, other results were in line with previously published results.


Norway spruce Radial compression Split-Hopkinson pressure bar High-speed photography Local strain 



The Academy of Finland is acknowledged for the funding under decision no. 140462. The Swedish Knowledge Foundation and member companies of the E2MP-Research Profile at Mid Sweden University are also acknowledged for supporting this research. Furthermore, the authors are grateful for the assistance with the measurements from Staffan Nyström and Max Lundström in the Mid Sweden University Material’s Laboratory.


  1. Bergander A, Salmén L (2000) Transverse elastic modulus of the native wood fibre wall. J Pulp Pap Sci 26:234–238Google Scholar
  2. Boutelje JB (1962) The relationship of structure to transverse anisotropy in wood with reference to shrinkage and elasticity. Holzforschung 16:33–46CrossRefGoogle Scholar
  3. Bragov A, Lomunov AK (1997) Dynamic properties of some wood species. J Phys IV JP 7:C3-487-C3-492Google Scholar
  4. Cramer S, Kretschmann D, Lakes R, Schmidt T (2005) Earlywood and latewood elastic properties in loblolly pine. Holzforschung 59:531–538. doi: 10.1515/HF.2005.088 CrossRefGoogle Scholar
  5. De Magistris F (2005) Wood fibre deformation ain combined shear and compression, Doctoral Thesis, KTH Royal Institute of TechnologyGoogle Scholar
  6. Dumail J-, Salmén L (1996) Compression behaviour of spruce wood under large plastic deformations. Nord Pulp Pap Res J 11:239–242CrossRefGoogle Scholar
  7. Eder M, Jungnikl K, Burgert I (2009) A close-up view of wood structure and properties across a growth ring of Norway spruce (Picea abies [L] Karst.). Trees Struct Funct 23:79–84. doi: 10.1007/s00468-008-0256-1 CrossRefGoogle Scholar
  8. Farruggia F, Perré P (2000) Microscopic tensile tests in the transverse plane of earlywood and latewood parts of spruce. Wood Sci Technol 34:65–82CrossRefGoogle Scholar
  9. Fortino S, Hradil P, Salminen L, De Magistris F (2015) A 3D micromechanical study of deformation curves and cell wall stresses in wood under transverse loading. J Mater Sci 50:482–492. doi: 10.1007/s10853-014-8608-2 CrossRefGoogle Scholar
  10. Gama BA (2004) Hopkinson bar experimental technique: a critical review. Appl Mech Rev 57:223–250CrossRefGoogle Scholar
  11. Gibson LJ, Ashby MF (1997) Cellular solids structure and properties. Cambridge University Press, CambridgeCrossRefGoogle Scholar
  12. Gray III GT (2000) Classic split-Hopkinson pressure Bar Testing. In: Mechanical testing and evaluation, ASM Handbook, vol 8. ASM International, pp 462–476Google Scholar
  13. Hamad WY, Provan JW (1995) Microstructural cumulative material degradation and fatigue-failure micromechanisms in wood-pulp fibres. Cellulose 2:159–177. doi: 10.1007/BF00813016 CrossRefGoogle Scholar
  14. Hassel BI, Modén CS, Berglund LA (2009) Functional gradient effects explain the low transverse shear modulus in spruce—full-field strain data and a micromechanics model. Compos Sci Technol 69:2491–2496. doi: 10.1016/j.compscitech.2009.06.025 CrossRefGoogle Scholar
  15. Hickey KL, Rudie AW (1993) Preferential Energy absorption by Earlywood in cyclic compression of Loblolly pine. In: International mechanical pulping conference, pp 81–86Google Scholar
  16. Holmgren S, Svensson BA, Gradin PA, Lundberg B (2008) An encapsulated split Hopkinson pressure bar for testing of wood at elevated strain rate, temperature, and pressure. Exp Tech 32:44–50CrossRefGoogle Scholar
  17. Jernkvist LO, Thuvander F (2001) Experimental determination of stiffness variation across growth rings in Picea abies. Holzforschung 55:309–317. doi: 10.1515/HF.2001.051 CrossRefGoogle Scholar
  18. Kure K, Dahlqvist D, Sabourin MJ, Helle T (1999) Development of spruce fiber properties by a combination of a pressurized compressive pretreatment and high intensity refining. In: International mechanical pulping conference, Houston, USA, TAPPI, pp 427–433Google Scholar
  19. Law KN, Kokta BV, Mao C (2006) Compression properties of wood and fibre failures. J Pulp Pap Sci 32:224–230Google Scholar
  20. Lönnberg B (2009) Mechanical pulping 2nd edition. In: Papermaking science and technology, vol 5. Paperi ja Puu, HelsinkiGoogle Scholar
  21. Lucander M, Asikainen S, Pöhler T, Saharinen E, Björkqvist T (2009) Fatigue treatment of wood by high-frequency cyclic loading. J Pulp Pap Sci 35:81–85Google Scholar
  22. Mauranen A, Ovaska M, Koivisto J, Salminen LI, Alava M (2015) Thermal conductivity of wood: effect of fatigue treatment. Wood Sci Technol 49:359–370. doi: 10.1007/s00226-015-0705-0 CrossRefGoogle Scholar
  23. Miksic A, Myntti M, Koivisto J, Salminen L, Alava M (2013) Effect of fatigue and annual rings orientation on mechanical properties of wood under cross-grain uniaxial compression. Wood Sci Technol 47:1117–1133. doi: 10.1007/s00226-013-0561-8 CrossRefGoogle Scholar
  24. Moilanen CS, Saarenrinne P, Engberg BA, Björkqvist T (2015) Image based stress and strain measurement of wood in the split-Hopkinson pressure bar. Meas Sci Tech 26:085206. doi: 10.1088/0957-0233/26/8/085206 CrossRefGoogle Scholar
  25. Müller U, Gindl W, Teischinger A (2003) Effects of cell anatomy on the plastic and elastic behaviour of different wood species loaded perpendicular to grain. IAWA J 24:117–128CrossRefGoogle Scholar
  26. Mustalahti M, Rosti J, Koivisto J, Alava MJ (2010) Relaxation of creep strain in paper. J Stat Mech Theory Exp. doi: 10.1088/1742-5468/2010/07/P07019
  27. Pan B (2011) Recent progress in digital image correlation. Exp Mech 51:1223–1235. doi: 10.1007/s11340-010-9418-3 CrossRefGoogle Scholar
  28. Pan B, Qian K, Xie H, Asundi A (2009) Two-dimensional digital image correlation for in-plane displacement and strain measurement: a review. Meas Sci Technol. doi: 10.1088/0957-0233/20/6/062001 Google Scholar
  29. Reid SR, Peng C (1997) Dynamic uniaxial crushing of wood. Int J Impact Eng 19:531–570CrossRefGoogle Scholar
  30. Renaud M, Rueff M, Rocaboy AC (1996) Mechanical behaviour of saturated wood under compression: part 1. Behaviour of wood at high rates of strain. Wood Sci Technol 30:153–164Google Scholar
  31. Salmén L (1987) The effect of the frequency of a mechanical deformation on the fatigue of wood. J Pulp Pap Sci 13:23–28Google Scholar
  32. Salmén L, Tigerstrom A, Fellers C (1985) Fatigue of wood—characterization of mechanical defibration. J Pulp Pap Sci 11:68–73Google Scholar
  33. Salmén L, Dumail JF, Uhmeier A (1997) Compression behaviour of wood in relation to mechanical pulping. In: International mechanical pulping conference, pp 207–211Google Scholar
  34. Salmi A, Salminen L, Hæggström E (2009) Quantifying fatigue generated in high strain rate cyclic loading of Norway spruce. J Appl Phys. doi: 10.1063/1.3257176 Google Scholar
  35. Salmi A, Saharinen E, Hæggström E (2011) Layer-like fatigue is induced during mechanical pulping. Cellulose 18:1423–1432CrossRefGoogle Scholar
  36. Salmi A, Salminen LI, Engberg BA, Björkqvist T, Hæggström E (2012a) Repetitive impact loading causes local plastic deformation in wood. J Appl Phys. doi: 10.1063/1.3676206 Google Scholar
  37. Salmi A, Salminen LI, Lucander M, Hæggström E (2012b) Significance of fatigue for mechanical defibration. Cellulose 19:575–579. doi: 10.1007/s10570-011-9640-x CrossRefGoogle Scholar
  38. Serrano E, Enquist B (2005) Contact-free measurement and non-linear finite element analyses of strain distribution along wood adhesive bonds. Holzforschung 59:641–646. doi: 10.1515/HF.2005.103 CrossRefGoogle Scholar
  39. Sutton M, Orteau J, Schreier H (2009) Image correlation for shape, motion and deformation measurements. Springer, New YorkGoogle Scholar
  40. Tabarsa T, Chui YH (2000) Stress-strain response of wood under radial compression: part I. Test method and influences of cellular properties. Wood Fiber Sci 32:144–152Google Scholar
  41. Uhmeier A, Salmén L (1996) Influence of strain rate and temperature on the radial compression behavior of wet spruce. J Eng Mater Technol Trans ASME 118:289–294CrossRefGoogle Scholar
  42. Valla A, Konnerth D, Keunecke D, Niemz P, Muller U, Gindl W (2011) Comparison of two optical methods for contactless, full field and highly sensitive in-plane deformation measurements using the example of plywood. Wood Sci Technol 45:755–765CrossRefGoogle Scholar
  43. Viforr S, Salmén L (2008) Shear/compression of chips for lower energy consumption in TMP refining. Appita J 61:49–55Google Scholar
  44. Watanabe U, Fujita M, Norimoto M (2002) Transverse Young’s moduli and cell shapes in coniferous early wood. Holzforschung 56:1–6. doi: 10.1515/HF.2002.001 CrossRefGoogle Scholar
  45. Widehammar S (2002) A method for dispersive split Hopkinson pressure bar analysis applied to high strain rate testing of spruce wood. Department of Materials Science, Uppsala University, UppsalaGoogle Scholar
  46. Widehammar S (2004) Stress-strain relationships for spruce wood: influence of strain rate, moisture content and loading direction. Exp Mech 44:44–48CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Carolina S. Moilanen
    • 1
    Email author
  • Tomas Björkqvist
    • 2
  • Birgitta A. Engberg
    • 3
  • Lauri I. Salminen
    • 4
  • Pentti Saarenrinne
    • 1
  1. 1.Department of Mechanical Engineering and Industrial SystemsTampere University of TechnologyTampereFinland
  2. 2.Department of Automation Science and EngineeringTampere University of TechnologyTampereFinland
  3. 3.Department of Chemical EngineeringMid Sweden University-FSCNSundsvallSweden
  4. 4.A Fredrikson Research & Consulting Ltd.JyväskyläFinland

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