執行成果摘要
The purpose of this study was to build two ecological engineerings by plantation lumber in Nan-Tou research ecenter, TFRI, and Cryptomeria japonica D. Don and Pinus radiata D. Don lumber were used for materials. In this year, wood properties of wooden structural element was evaluated and detected at before manufacture process and after manufacture process by different nondestructive tehniques. Nondestructive tehniques include penetration depth by Pilodyn method, acoutic performance by ultrasonic wave or stress wave method, and drilling resistance value by resistance method. In the futiure, this research will detect and evaluate the wooden members by different nondestructive techniques. Finally, looking for best nondestructive way and system to detect wooden structure members in-situ. The wood lumbers after preservation treatment have lower strength, howeevr, there was significant different between no treatments and treatment. Total 300 wooden structural elements (2 species, 3 treatments, 50 replica) were bured in soil near two ecological engineerings. Total 60 wooden structural elements were detected by destructive test for predicting wood strength values by nondestructive parameters above mentioed. Moreover, I inspect some ecological engineerings in Nan-Tou and Luo-Dong Forest District, Forestry Bureau for future research.