Ultrasonic, electric and radar measurements for living trees assessment
Ultrasonic, electric and radar measurements for living trees assessment
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用于活树评估的超声波、电和雷达测量
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
R. Martinis
中科院分区：
文献类型：
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作者：
L. Sambuelli;L. Socco;A. Godio;G. Nicolotti;R. Martinis
树木评估问题越来越被认为既是生活质量问题，也是城市管理中的安全问题。树木倒下的一个主要原因是一些主根的承载能力的衰退，这是由某种树木病理学引起的。这种退化要么改变木材的物理特性，要么改变树根所在的地面上方树木外围部分的含水量。对这些现象进行了实验，以检验一种或多种地球物理技术是否能够以必要的几何和物理分辨率看到衰变。测试的技术有：超声波断层扫描、电断层扫描和雷达。由于物体尺寸小而产生的问题要么通过增加测试场地的频率，要么通过减小探头的尺寸来解决。结果表明，这些相当常见的地球物理技术应用于树木、桩和建筑木材的非侵入性测试是非常有希望的。
The problem of tree assessment is increasingly felt both as a problem of life quality as well as a problem of safety within the city management. One of the main causes of the collapse of a tree is the decay of the bearing capacity of some of the primary roots caused by some kind of fytopathology. This deterioration either changes the physical characteristics of the wood, or changes the water content in the peripheral part of the tree immediately above the ground where the root lies. Experiments have been carried out with regard to these phenomena, to check if one or more geophysical techniques were able to see, with the necessary geometrical and physical resolution, the decay. The techniques tested were: ultrasonic tomography, electric tomography and radar. The problems that arose from the small dimensions of the objects were fixed either increasing the frequency of the testing fields or reducing the size of the probes. The results show very promising possibilities of applications of these quite common geophysical techniques to the non invasive testing of trees, piles and building wood.