IMPACT ENERGY ON NOTCHED AND UNNOTCHED SPECIMENS OF WOODEN EUCALYPTUS GOMPHOCEPHALA UNDER VARIATIONS OF MOISTURE

المؤلفون

  • Ihsane LOULIDI ENSEM, Casablanca
  • M’Hamed CHERGUI ENSEM, Casablanca
  • Mohammed ELGHORBA ENSEM, Casablanca
  • Abderrahim FAMIRI Division of Research and Experimental Forestry, Agdal-Reduction

الكلمات المفتاحية:

Energy of Charpy، Eucalyptus gomphocephala، Moisture، Volumetric withdrawal

الملخص

Paper presents the study of the determination of the energy of impact on wooden specimens of Eucalyptus gomphocephala, Moroccan species of good mechanical characteristics but deemed by his nervousness, which harms its use as timber.

In many cases, wood is exposed to undergo temporary and abrupt efforts, shocks, vibrations (pit props, crash barriers, bridges and footbridges….). For some species of Eucalyptus, an abnormal withdrawal may involve a localized failing-in of wood cells which produces an apparent deformation or collapse.

During our study, we determined the energy absorbed by notched or unnoched specimens, well defined subjected to the impact test of Charpy, under different states of moisture at controlled temperature, consequently various variations of volumetric withdrawal have been observed.

السير الشخصية للمؤلفين

Ihsane LOULIDI، ENSEM, Casablanca

Laboratory of Control and Characterization of Metallic Materials and Structures

M’Hamed CHERGUI، ENSEM, Casablanca

Laboratory of Control and Characterization of Metallic Materials and Structures

Mohammed ELGHORBA، ENSEM, Casablanca

Laboratory of Control and Characterization of Metallic Materials and Structures

المراجع

Gipson L. J. and Ashby M. F., “Cellular solids”. Oxford: Pergamon Press, 1988.

Johnson W., "Historical and present-day references concerning impact on wood." Int. J. Impact Engng 4, 161–174, 1986.

Johnson W., “Mostly on oak targets and 19th century naval gunnery.” Int. J. Impact Engng 4, 175–183, 1986.

Reid S. R. and Peng C., “Dynamic uniaxial crushing of wood. ”Int. J. Impact Engng 19, 531-570, 1997.

J. J. Harrigan. “et al”, “Inertial effects on the crushing strength of wood loaded along the grain”. In: ExperimentalMechanics (Allison, Ed.), Balkema, Rotterdam, pp. 193–198.

Moutee M., “Modélisation du comportement mécanique du bois au cours du séchage.” Thêse de l’université Laval, 2006.

DIAS de MORAES P., “Influence de la température sur les assemblages bois”, Thèse de l’université Henri Poincaré, 2003.

Lokaj A. and Vavrušová K., “Wood Impact Bending Strength Laboratory Tests.” Civil Engineering Series, Vol. X paper #3, No.1, 2010.

التنزيلات

منشور

2012-12-01

كيفية الاقتباس

LOULIDI, I., CHERGUI, M., ELGHORBA, M., & FAMIRI, A. (2012). IMPACT ENERGY ON NOTCHED AND UNNOTCHED SPECIMENS OF WOODEN EUCALYPTUS GOMPHOCEPHALA UNDER VARIATIONS OF MOISTURE. مجلة علوم و تكنولوجيا ب، علوم الهندسة, (36), 09–14. استرجع في من https://revue.umc.edu.dz/b/article/view/1444

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