弹性波层析成像技术检测活立木腐朽

doi:10.11707/j.1001-7488.20080521

Scientia Silvae Sinicae ›› 2008, Vol. 44 ›› Issue (5): 109-114.doi: 10.11707/j.1001-7488.20080521

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Elastic Wave Tomography in Standing Tree Decay Detection

Liang Shanqing¹,Wang Xiping²,Cai Zhiyong²,Robert J.Ross²,R.Bruce Allison³,Fu Feng¹

(1.Research Institute of Wood Industry，CAF Beijing 100091；2.USDA Forest Products Laboratory Madison 53726-2398；3.Allison Tree Care Inc WI Verona 53593)

Received:2007-07-17 Revised:1900-01-01 Online:2008-05-25 Published:2015-04-22

Abstract

Abstract:

This paper introduces the current research and development on elastic wave tomography technique for detecting internal defects in standing trees. Some key issues in elastic wave tomography，such as elastic wave generation，wave propagation path，and the algorithms for crosssection imaging were briefly reviewed. As a demonstration，the authors evaluated Red Pine (Pinus resinosa) trees in United States Forest Service Camp using Picus sonic tomography tool. The results indicted that the geometrical shape of trunk's cross section can be successfully simulated with the tomography tool. The tomogram of the trunk's cross section successfully revealed the general location and magnitude of the internal decay of the trees. Base on elastic wave tomography instrument has practical application in city and urban areas for accurately detecting internal decay of standing trees.

Key words: elastic wave tomography technique, nondestructive test, standing tree, decay

Liang Shanqing;Wang Xiping;Cai Zhiyong;Robert J.Ross;R.Bruce Allison;Fu Feng. Elastic Wave Tomography in Standing Tree Decay Detection[J]. Scientia Silvae Sinicae, 2008, 44(5): 109-114.

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Elastic Wave Tomography in Standing Tree Decay Detection

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