Author
For further details log on website :
http://publisher.unimas.my/ojs/index.php/JCEST/article/view/90
Abstract
Acacia mangium is one of the most popular choices in the reforestation and rehabilitation of abandoned shifting cultivation areas dated back to the 70’s. This paper looks into the evaluation of mechanical strength and physical properties in structural size at green condition for Acacia mangium. The mechanical strength properties tests were referred to the modulus of rupture, modulus of elasticity and tensile strength. Meanwhile, physical properties determination referred to basic density and moisture content. At green condition, Acacia mangium had been identified under the strength group SG6. It was found that strength value of modulus of rupture was higher than the tensile strength value with 44% stronger in bending compared to in tension. At the structural size, the mean value for moisture content and basic density at green condition were reported with 73.03% and 0.54g/cm3 respectively.
Full Text:
PDFReferences
Alik, D. & Kuroda, N.,1996. The Relationship Between Basic Density and Mechanical Strength Properties of Some Sarawak Timbers. Proceedings of TRTTC/STA Forest Products Seminar 96. Kuching, Sarawak. March 11-13, p.117-127.
Alik, D. & Nakai, T., 1997a. Preliminary Study for Stuructural Grading Based on Full Size Bending Test of Resak, Durian and Keruing Utap of Sarawak. Proceedings of the International Tropical Wood Conference, Kuala Lumpur. June 17-20, p.252-260.
Alik Duju (1999), Strength Properties of Acacia mangium Grown in Sarawak. TRTTC/STA, Forest Products Seminar, 12-14 October 1999, Kuching, Sarawak, Malaysia. 160pp.
Alik, D., & Nakai, T. 2000. Mechanical Properties of Acacia mangium Planted in Sarawak, Malaysia. Paper Presented in the XXI IUFRO World Congress 2000. Kuala Lumpur August 7-12.
Anon., 1979. British Standard 5820:1979. Methods of Test for Determination of Certain Physical and Mechanical Properties of Timber in Structural Sizes. British Standard Institution.
Anon,. Malaysian Standard-Code of Practice for Structural Use of Timber: MS 544: Part 2:2001 . Department Of Standards Malaysia. [7] Anon., 1984. The Malaysian Grading Rules for Sawn Hardwood Timber. Ministry of Primary Industries.
Anon., 1995. Timber Engineering Step 1. Basic of Design, Material Properties, Structural Components and Joints. Centrum Hout. Netherlands.
C19/9.
Anon., 1995. Wood Handbook. Forest Products Laboratory. U.S Department of Agriculture Handbook No.72. U.S Government Printing Office.
Washington.
Anon., 1999a. Wood Handbook. Wood as an Engineering Material. Forest Products Laboratory. Report FPL-GTR-113. USA, Washington. p.19-14. [11] Chu, Y.P.,Ho, K.S., Mohd, S. M. & Abdul, R. A. M., 1997. Timber Design Handbook. Malayan Forest Records No.42. Forest Research Institute
Malaysia. 288 pp.
Christine, J.H. 1988. The Ecology of an Acacia mangium Plantation Established after Shifting Cultivation in Niah Forest Reserve. Forest research report. Forest Department Sarawak.
Desch, H. E. & Dinwoodie, J.M., 1981. Timber Its Structure, Properties and Utilisation. 6th Edition. Macmillan Press Limited. 410 p.
Gurfinkel, G., 1973. Wood Engineering. Southern Forest Products Association. Upon Printing Co. USA.
Hoffmeyer, P., 1978. Moisture Content Strength Relationship for Spruce Lumber Subjected to Bending, Compression and Tension along the Grain.
Proceedings of IUFRO Timber Engineering Conference, Vancouver, B.C. Canada.
http://www.worldagroforestrycentre.org/sites/TreeDBS/aft/speciesPrinterFriendly.asp?Id=69 . Visited on November 19, 2008.
Jozsa, L.A. & Middleton, G. R., 1994. A Discussion of Wood Quality Attributes and their Practical Implication. Forintek Canada Corp. Natural Resources Canada and British Columbia Ministry of Forests.
Madsen, B., 1975. Moisture Content Strength Relationship for Lumber Subjected to Bending. Structural Research Series Report No.11. Department of Structural Engineering. U.B.C Vancouver, Canada.
Madsen, B., Janzen, W. & Zwaagstra, T., 1980. Moisture Effects in Lumber. Structural Research Series Report No. 27. Department of Structural Engineering. U.B.C Vancouver, Canada.
Pearson, R.G., Kloot, N. H. & Boyd, J. D. 1962. Timber Engineering Design Handbook. Commonwealth Scientific and Industrial Research Organization, Australia. Jacaranda Press. 264 p.
Tham, C.K. 1978. Introduction to a Plantation Species – Acacia Mangium Willd. Proceedings of the 6th Malaysian Forestry Conference, 1976,
Kuching, Sarawak. Vol.2:153-158.
Zink, A.G. 1993. Stress Analysis of Wood with Knots. Systems Approach to Wood Structures. Proceedings from the Wood Engineering Division Sessions at the 1993 Annual Meeting of the Forest Products Society. June 20-23.
For further details log on website :
http://publisher.unimas.my/ojs/index.php/JCEST/article/view/90
No comments:
Post a Comment