Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
2008 | 15 | 2 |

Tytuł artykułu

Determining strenght of the modified wood


Warianty tytułu

Języki publikacji



The article presents results of investigations of the effect of pinewood modification with methylpolymethacrylate on the anisotropy of its strength in complex stress conditions. The investigations aimed at determining the resistance of the examined wood to stretching, compression, stretching with shear, and compression with shear. For the investigations oriented on shear, shear with stretching, and shear with compression, a special specimen was prepared which differs by notch geometry from a typical Iosipescu specimen. A new test machine is described in the article, which is equipped with special specimen holders to perform investigations in complex stress conditions. Crack patterns recorded for the natural and modifiedwood are presented. For all tests, numerical FEM simulations were performed to obtain stress distributions inside the specimens. The calculated stress distributions were visualised as contour line projections for the natural and modified wood

Słowa kluczowe








Opis fizyczny



  • Faculty of Mechanical and Electrical Engineering, Polish Naval Academy in Gdynia, Smidowicza 69, 81-103 Gdynia, Poland


  • 1. Adams D.F., Lewis E.Q.: Experimental strain analysis of the Iosipescu shear test specimen. Exp. Mech., Vol. 35, No. 2, pp. 352-360, 1997
  • 2. Adams D.F., Lewis E.Q.: Experimental assessment of four composite material shear test methods. J. Test. Evaluat. Vol. 25, No. 2, pp. 242-254, 1995
  • 3. Adams D.F., Walrath D.F.: Current status of the Iosipescu shear test, J. Comp. Mat., Vol. 25,No. 1, pp. 494-506, 1987
  • 4. Arcan M., Hashin Z., Voloshin A.: A method to produce uniform plane-stress states with applications fiber-reinforced materials. Exp. Mech., Vol. 18, pp. 141-145, 1984
  • 5. Boding J., Goodman I.R.: Prediction of elastic parameters for wood, Wood Sci., Vol.5, No. 4, pp. 378-385, 1973
  • 6. Boding J., Jayne B., A.: Mechanics of wood and wood composites, Van Nostrand Reinhold, New York, 1982
  • 7. Broughton W.R., Kumosa M., Hill D.: Analysis of the Iosipescu shear test applied to unidirectional carbon-fiber reinforcedcomposites, Comp. Science Tech., Vol. 38, pp. 299-325, 1990
  • 8. Iosipescu N.: New accurate procedure for single shear testing of metals. J. Mater., Vol. 2, No. 3, pp. 537-566, 1967
  • 9. Kumosa M., Hull D.: Mixed – mode fracture of composites using Iosipescu shear test. Int. J. Fracture, Vol. 35, pp. 83-102, 1987
  • 10. Kyzioł L.: Modified wood –apromising material forshipbuilding. Polish Maritime Research, pp. 6-10, 1999
  • 11. Kyziol L, Kowalski S. J.: Mechanical Properties of ModifiedWood-IUTAM Symposium on Theoretical and Numerical Methods in Continuum Mechanics of Porous Materials. University of Stuttgart, Germany, September 5-10, pp.221-229, 1999
  • 12. Morton J., Ho H., Tsai M. Y., Farley G.: An evaluation of the Iosipescu specimen for composite materials shear property measurement. J. Compos. Mater., Vol. 26, pp. 708-750, 1992
  • 13. Ochelski S.: Critical evaluation of selected methods of composite investigations (in Polish). WAT Bulletin, Year XLIX, No. 7, pp. 23-33, 2000
  • 14. Pierron F., Vautrin A.: Analyse de la rupture d`éprouvettes Iosipescu: application à la mesure de la résistance au cisaillement. Ninth French Conference on Composite Materials, Vol.2, Saint-Etienne, 22-24 November, pp. 709-718, 1994
  • 15. Pierron F., Vautrin A.: Measurement of the in-plane shear strengths of unidirectional composites with the Iosipescu test. Composites Science and Technology, Vol. 57, pp. 1653-1660, 1997
  • 16. Pindera M.J. et all.: A methodology for accurate shear characterization of unidirectional composites. J. Compos. Mater., Vol. 21, pp. 1164-1185, 1987
  • 17. Swanson S.R., Messick M., Tombes G.R.: Comparison of torsion tube and Iosipescu in-plane shear test results for a carbon fibre reinforcedepoxy composite. Composites, Vol. 16, No. 3, pp. 178-183, 1985
  • 18. Tarnopolskij Yu. M., Arnautov A.K., Kulkov V.L.: Methods of determination of shear properties of textile composites. Composites Part A, Vol. 30, pp. 879-885, 1999
  • 19. Walrath D.E., Adams D.F.: The Iosipescu shear test as applied to composite materials. Ex. Mech. Vol.3, pp. 105-110, 1983
  • 20. Wang Ch.H., Chalkley P.: Plastic yielding of film adhesive undermultiaxial stresses. Inter. J. Adhesion Adhesives, Vol 20, pp. 155-164, 2000
  • 21. Kyzioł L.: Analysing properties of the constructional wood superficially saturatedwiththe MM polymer (in Polish), Polish Naval Academy in Gdynia, No. 156 A, 2004
  • 22. PN-79/D-04229. Wood. Determining resistance to compression across fibres (in Polish)
  • 23. PN-81/D-04108. Wood. Determining resistance to stretching across fibres (in Polish)
  • 24. PN-81/D-04107. Wood. Determining resistance to stretching along fibres (in Polish)
  • 25. PN-79/D-04102. Wood. Determining resistance to compression along fibres (in Polish).

Typ dokumentu



Identyfikator YADDA

JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.