Study on the Feasibility About GPR Applied on Wood Nondestructive Testing
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摘要: 简要地介绍了国外已有的树木雷达(TRU)系统，运用其基本原理进行了探地雷达(GPR)应用于木材无损检测的理论可行性分析。由于木材本身的复杂成分，因而其介电性质的影响因素很多，对采集到的电磁波进行客观地解释分析仍存在很大困难。笔者列举了探地雷达的处理、分析和解释的方法，指出若合理、选择性地进行树木雷达分析，可以比较科学准确地对内部腐朽、空洞等特征进行探测。Abstract: At present the most promising nondestructive testing, geophysical survey techniques-Ground Penetrating Radar (GPR) system has been concerned and been researched widely. This paper carried on the theoretical analysis on it, and combined with the characteristics of wood, applying the ground penetrating radar in the nondestructive testing technology to wood non-destructive testing ( NDT ). At the same time, this paper briefly introduced the foreign existing tree radar unit (TRU) system, and aimed to apply the basic principle of GPR to make an analysis about theoretical feasibility that GPR applied to wood NDT. Because of complex components the wood itself holds, the dielectric properties are influenced by many factors, and then there still exist great difficulties in analyzing the collected electromagnetic wave objectively. But this article enumerates the GPR processing, analysis and interpretation methods, and it is to point out that if the plot of tree radar is analyzed reasonably and selectively, the inner decay and empty features description by GRP can be more scientific and accurate.
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Keywords:
- Nondestructive testing /
- Ground penetrating radar /
- Trees radar /
- Wood
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