Determination of the Moisture Content at Fiber Saturation Point of Bamboo by Nondestructive Testing Method with Stress Wave Timer
Tsai-yung Chen, Chih-Hung Shih, Ho-Chin Chen
Professor and Research fellow, Research Institute of Forestry,
National Chung-Hsing University, Taichung, Taiwan, R.O.C.
ABSTRACT The values of moisture content would be influenced by the bamboo species and sampling position, therefore its values appeared to be not obvious, when the moisture content of bamboo was higher, the stress wave velocity would be decreased. The stress wave velocity of Dendrocalamus gigantens Munro at the top, middle and bottom section were 3925~3525 m/s, 4084- 3756 m/s and 3808~3612 m/s F.S.P.= 11-21%, 15-25% and 18~28%, respectively. The stress wave velocity of Dendrocalmus latifflorus Munro at the top, middle and bottom section were 4366~3659 m/s, 4244~3936 m/s and 3900-3643 m/s and there F.S.P.= 17~27%, 14-24%, and 21~31 %respectively. The stress wave velocity of Bambusa stenostachya Hackel at the top, middle and bottom section were 3938-3541 m/s, 3935~3652 m7s and 3710~3570 m/s and there F.S.P.=13~23%, 20~30%, and 19~29% respectively. The values of F.S.P. obtained by compressive method for the average values of the three bamboo species (top= 13-22%, middle= 15~25%, bottom= 15-28%), these values were lower than that of wood (28~32%).
Publication Source: WCTE '98 - 5th World Conference on Timber Engineering, 1998 August 17-20, Montreaux, Switzerland.
Vol. 2, Pages 820.....
Publisher: Presses polytechniques et universitaires romandes - [Homepage]
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