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Journal of Electrical and Computer Engineering
Volume 2016 (2016), Article ID 6279869, 7 pages
http://dx.doi.org/10.1155/2016/6279869
Research Article

Development of Testing Platform and Comparison Studies for Wood Nondestructive Testing

1School of Information Engineering, Zhejiang Agricultural & Forestry University, Lin’an 311300, China
2Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Lin’an 311300, China
3School of Electrical Engineering and Information, Sichuan University, Chengdu 610065, China

Received 6 June 2016; Accepted 14 July 2016

Academic Editor: Ephraim Suhir

Copyright © 2016 Jian Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Stress wave based techniques have been developed for evaluating the quality of the wooden materials nondestructively. However the existing techniques have some shortcomings due to the significant variation of the wood properties and are now in need of updating. There are also stress wave based instruments which have been widely used for nondestructive testing of wood. But most of them are inflexible and unsuitable for the tentative studies. This paper proposed and implemented a wood nondestructive testing platform based on NI virtual instrument. Three wood nondestructive testing methods, including peak time interval measurement, cross-correlation, and spectrum analysis, were also tested on this platform with serious decay sample, early decay sample, and defect-free sample. The results show that new methods can be verified easily and the researches of wood nondestructive testing will be accelerated with the designed platform.