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Characterization of Arjun (terminalia Arjuna) Wood for Working and Finishing Properties.

M Ramiz Uddin ,
Divisional Officer (Current charge)
Wood Working and Timber Engineering Division, Bangladesh Forest Research Institute,Chittagong

N A Mridha
Research Officer
Wood Working and Timber Engineering Division, Bangladesh Forest Research Institute, Chittagong.

T K Day
Research Assistant;
Wood Working and Timber Engineering Division, Bangladesh Forest Research Institute, Chittagong.

Abstract/ Executive Summary:

To identify working and finishing properties of wood is very important in any woodworking of its selection for specific uses. This study reports on working and finishing properties of arjun (Terminalia arjuna) wood species. The working properties were carried out in two different methods, namely: by machine and by hand tools. In machining and hand tools operation, the evaluation was based on frequency of occurrence of defect free samples. The defects were visually observed and the percentage of defect free samples was determined for each test. Finishing qualities were also evaluated with the application of two different types of polishing materials, viz., shellac and carpa. The outcome of this study introduces that arjun wood is suitable for furniture and construction materials.

Keywords: Working properties, Finishing properties, Arjun wood, Machine tools, Shellac, Carpa.

Location: Wood Working and Timber Engineering Division

Start Date:

End Date:

Program Area: Postharvest and Agro-processing

Commodity: Arjune

Objectives:

To assess the suitability of arjun wood for furniture and construction purpose.

Methodology:

Arjun (Terminalia arjuna) wood was collected in the log form. This log was converted to 25 mm planks by plane sawing in a 122 cm manually feed band saw. Sawing performance was recorded. The planks were seasoned to less than 15% moisture content. The dried planks were dressed and 20 samples of 19 mm × 125 mm × 1220 mm in size were prepared from each species. All the test samples were sound free from all defects including knots, stain, incipient decay, surface checks and end splits. For different experimental conditions, each sample was cut into three parts which are 19 mm × 125 mm × 914 mm, 19 mm × 49 mm × 306 mm and 19 mm × 76 mm × 306 mm in size. First and second parts of the sample are used for the test of planning and turning properties respectively. The other part is used for the test of boring, mortising and shaping properties.The working properties were carried out in two different methods, viz., machines and hand tools. Ten samples were tested with machine and ten samples with hand tools. After completion of each machine test, the samples were examined visually to sort out the defect-free samples. In each machine test, the samples were examined for torn grain, fuzzy grain, raised grain, chipped grain, chip marked, tear out, broken corner and roughness. The percentage of defect free sample was considered to be the measure of the machining and working qualities.The tests were carried out in accordance with ASTM standards: D-1666-64; 1971 with certain deviation because of limitations of available equipment. Similar tests were carried out using carpenter’s hand tools.In finishing test, two types of polish viz., shellac and carpa were applied and performance was recorded on the basis of the surface finish.

Source of Information: Research Progress Report 2010-2011, Wood Working & Timber Engineering Division, Bangladesh Forest Research Institute, Chittagong

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Arjun (Terminalia arjuna) wood is found to be easy in respect of sawing. Machining and hand tools operations indicate that this wood is suitable for furniture and construction materials. In the finishing operation, arjun palm wood shows fair finishing quality.

Knowledge Management: Report/Proceedings