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首页> 外文期刊>Wood and Fiber Science >Strength loss and hazard assessment of Euphrates poplar using stress wave tomography.
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Strength loss and hazard assessment of Euphrates poplar using stress wave tomography.

机译：利用应力波层析成像技术对幼发拉氏杨的强度损失和危害评估。

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摘要

Stress wave tomography is a noninvasive testing method for diagnosing defects in standing or cut trees. For this study, the technique was used to diagnose defects on 15 disks of Euphrates poplar (Poulus euphratica Oliv.) cross-sections. Two-dimensional tomograms were generated and used to estimate strength loss and assess potential tree stem failures. Results found that stress wave tomograms can effectively locate decay and void dimensions and that there was a logarithmic significant relationship (r=0.9679) between real tomographic defect areas and visual defect areas indicated by the tomograms. This regression relationship could improve accuracy of hazard assessment in historic trees when using stress wave tomography. Strength loss was calculated based on Wagener, Coder, and Mattheck's equations. These three equations can provide effective internal tree stem weakness assessment. However, strength loss between tomographic defect areas in cross-sections and real visual defect area had a significant 0.05 statistical difference. The results of this study provided insight into defect diagnosis and hazard assessment for trees in China, especially those with historical significance.
机译：应力波断层扫描是一种用于诊断站立或砍伐树木中的缺陷的非侵入性测试方法。在这项研究中，该技术被用于诊断15个幼发幼虫杨树（ Oliv。）断面的缺陷。生成二维断层图，并用于估计强度损失和评估潜在的树茎衰竭。结果发现，应力波断层图像可以有效地定位衰变和空隙尺寸，并且在实际断层图像缺陷区域和由断层图像指示的视觉缺陷区域之间存在对数显着关系（ r = 0.9679）。当使用应力波层析成像时，这种回归关系可以提高历史树木的危害评估的准确性。强度损失是根据Wagener，Coder和Mattheck方程计算的。这三个方程可以提供有效的内部树茎弱点评估。但是，断层的断层图像缺陷区域与实际的视觉缺陷区域之间的强度损失具有显着的0.05统计差异。研究结果为中国树木特别是具有历史意义的树木的缺陷诊断和危害评估提供了见识。

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