应用Arbotom应力波检测系统,对东北林区3个针叶树种(云杉、冷杉、落叶松)和9个阔叶树种(白桦、色木、椴木、杨木、水曲柳、核桃楸、榆木、铁木和柞木)的原木内部腐朽进行检测,并对原木内部腐朽面积的实际估算值和检测估算值进行比较分析。结果表明:Arbotom应力波无损检测系统可以获取原木内部腐朽的二维图像,但检测准确率较低,建议采用多点测量和改进应力波测试仪器,以提高检测准确率。
The accurate measurement of log interior decays is the basis of reasonable bucking. With the non-destructive testing technology of stress wave, the interior decay of logs was measured for three kinds of conifer species such as Picea asperata, Abies fabric, Larix gmelinii and nine broadleaved trees, such as Betula platyphylla, Acer mono, Tilia tuan, Populus pseudosimonii, Fraxinus mandshurica, Juglans mandshurica, Ulmus pumila, Ostrya japonica, Quercus mongolica in northeast forest regions. Then we made a comparative analysis between the actual value and the observed value of the interior decayed areas of the logs. The test result indicated that the two-dimensional images of the interior decay from logs could be got with the non-destructive test technology of stress wave, but the measuring accuracy is low. Thus we suggest that !multi-spots" survey method and improved Arbotom stress wave measuring instrument should be used in order to increase the measuring accuracy.
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