Biology and Life Sciences

Biology and Life Sciences

Mechanical properties (bending and Compression stress) as a tool for grading stress of Acacai nilotica wood

Pages: 8  ,  Volume: 18  ,  Issue: 1 , December   2018
Received: 16 Dec 2018  ,  Published: 23 December 2018
Views: 88  ,  Download: 0


# Author Name
1 Elamin Elhadi Elamin


The aim of this study was to determine the mechanical properties of Acacia nilotica (L.) Willd wood and classified the grades according to basic stress. Samples of wood were collected from Damazin which located in the Blue Nile States. Wood samples were prepared to measure the static bending and compression values. The Results showed that the ultimate basic stress for bending for Acacia nilotica wood was 234.86 MPa, 102.62 MPa for ultimate compression parallel to the grain. From the results obtained during this study, Acacia nilotica wood has higher average of bending stress and Compression stress and this property is recommend for using it for heavy construction, flooring, furniture, veneer, plywood, tool handles and railway sleeper production.



Booth, L.G. and P.O. Reece 1967. The Structural Use of Timber. E &F.Spon Ltd. London. 265p. British Standard 373. 1986. Methods of testing small clear specimens of timber. BSI, London. British Standard 3819. 1964. Grading rules for sawn home-grown softwoods. Handbook on seeds of dry-zone acacias. Retrieved 2017-08-03. ISO.1979. Standard procedure no. 3787/ 1979. Testing compression parallel to the grain for wood Nasroun, T. H, Elamin, E. E and Yusif, E. A. M. (2018). Grade (Design) Stresses for Boswellia papyrifera (Gafal) Wood Grown in Blue Nile State. Sudan. International Journal of Research Publications. Nasroun, T. H. (1981). Specifying Local timber for structures. Sudan Silva. IV (24) : 38-51. Nasroun, T. H. (2005) Wood Properties and Technology. Dar Aalam Al-kutub, Riyadh. 326 pp. (in arabic). Record, S. J (1914). The Mechanical Properties of Wood Open Education Process OKFN, India, University of Yale – Forest school. SSMO.2012.Sudanese standard no. 5176/ 2012. Determination of ultimate strength in static bending Wickens, G.E. (1995). Role of Acacia species in the rural economy of dry Africa and the Near East. FAO Conservation Guide. 27. Food and Agriculture Organization of the United Nations. ISBN 92-5-103651-9.