ASEAN Journal on Science and Technology for Development
Vol. 25 No. 2 (2008): ASEAN Journal on Science and Technology for Development (AJSTD)

DEFORMATION OF WOOD IN COMPRESSION DURING MOISTURE MOVEMENT

S. Hamdan (Faculty of Engineering, UNIMAS, Kota Samarahan, 94300 Sarawak)
M.S. Osman (Faculty of Engineering, UNIMAS, Kota Samarahan, 94300 Sarawak)
M.Y. Chew (Faculty of Engineering, UNIMAS, Kota Samarahan, 94300 Sarawak)



Article Info

Publish Date
22 Nov 2017

Abstract

This work presents the phenomenon of mechano-sorptive strain in the deformation of wood during moisture content (MC) changes. A series of experiments were designed to demonstrate the greatly enhanced deformation due to the mechano-sorptive effect. The purpose of this work is to show the magnitude of mechano-sorptive creep compared to the ordinary viscoelastic creep with applied compressive load. In order to do this, several conditions were induced. They were the moisture movement with MC change, moisture movement without MC change and conditions without moisture movement. Several apparatus were assembled to produce the desired conditions. Special care is taken to make sure that the compressive load is relatively small and is within elastic limit. This work observed the unique patterns of strains of various conditions that were induced in the experiments. The characteristics shown in the results were evaluated logically and compared to existing theories to confirm their validity. The results have shown that with the presence of mechano-sorptive, the maximum strains of Jelutong (dyera costulata) wood specimens loaded at 200N is 0.433x10 -3 . The results showed that the severest deformation is caused by the increasing MC in the wood specimen, attributed to the mechanosorptive (MS) effect. 

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Journal Info

Abbrev

ajstd

Publisher

Subject

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Mathematics

Description

The coverage is focused on, but not limited to, the main areas of activity of ASEAN COST, namely: Biotechnology, Non-Conventional Energy Research, Materials Science and Technology, Marine Sciences, Meteorology and Geophysics, Food Science and Technology, Microelectronics and Information Technology, ...