电学无损检测法在活立木中的应用与展望  

Application and prospect of electrical nondestructive testing method in standing tree

作　　者：梁星宇 丁叶蔚 何宇航 黄俣劼 王正 Liang Xingyu;Ding Yewei;He Yuhang;Huang Yujie;Wang Zheng

机构地区：[1]南京林业大学材料科学与工程学院,江苏南京210037 [2]同济大学土木与工程学院,上海200092

出　　处：《木工机床》2022年第2期12-15,共4页Woodworking Machinery

基　　金：2020年江苏省政策引导类计划(苏北科技专项SZ-LYG202014)。

摘　　要：活立木作为优秀的可再生自然资源,对空气净化、城市美观、提供建材等起到重要作用。我国的森林资源仍较为短缺,而木材需求量较大,二者之间存在着巨大的供给性矛盾,且木材的利用率相对偏低。对活立木进行无损检测研究,是提高活立木利用率的重要手段。电学无损检测法是利用木材电阻对内部腐朽的灵敏度较高的特点,有效检测腐朽大小、位置以及程度。本文通过介绍针式探测法、四点测试法和断层成像法三种电学无损检测发原理以及国内外现状,对成果进行总结分析并提出思考建议,以期为我国电学无损检测法在活立木无损检测中的应用发展提供参考。As an excellent renewable natural resource,standing timber plays an important role in air purification,urban beauty,and provision of building materials.Our country’s forest resources are still in short supply,and the demand for wood is large.There is a huge structural supply contradiction between the two,and the utilization rate of wood is relatively low.Research on non-destructive testing of standing timber is an important means to improve the utilization rate of standing timber.The electrical non-destructive testing method uses the high sensitivity of wood resistance to internal decay to effectively detect the size,location and degree of decay.This article introduces the three electrical non-destructive testing principles,including the needle detection method,four-point testing method,and tomographic imaging method,as well as the current situation at home and abroad,and summarizes the results and puts forward suggestions for thinking.Provide reference for application development in testing.

关 键 词：电学法 活立木 研究现状 展望 

分 类 号：S718.4[农业科学—林学]