文献类型：期刊文献

中文题名：阻抗法与计算机断层扫描法在木材年轮检测中的应用研究

英文题名：Application of Drill Resistance and Computed Tomography for Detecting Annual Rings

作者：许倩[1] 周宇[1] 周海宾[1,2]

第一作者：许倩

机构：[1]中国林业科学研究院木材工业研究所,北京100091;[2]古建筑木材科学研究与保护国家文物局重点科研基地,北京102308

年份：2025

卷号：39

期号：5

起止页码：10-19

中文期刊名：木材科学与技术

外文期刊名：Chinese Journal of Wood Science and Technology

收录：;北大核心:【北大核心2023】；

基金：“十四五”国家重点研发计划课题“应县木塔本体信息采集、挖掘与数据模型构建”(2023YFF0906301)。

语种：中文

中文关键词：年轮宽度;年轮数量;阻抗法;计算机断层扫描法

外文关键词：annual ring width;annual ring number;drill resistance;computed tomography

分类号：S781.5;TP183

摘要：木构件年轮宽度和数量是古建筑断代的重要参考依据,其测量方法需平衡文物保护需求和结果准确性。依据我国北方古建筑木构件常见用材特点,选择采自华北落叶松(Larix gmelinii var.principis-rupprechtii)和黑防3号杨(Populus deltoides×Populus cathayana)的不同部位(树高1200~1400 mm和2400~2600 mm)的木材样品为研究对象,分别利用微损的阻抗法(drill resistance,DR)和无损的计算机断层扫描法(computed tomography,CT),并以传统断面拍照法为参照,分析比较DR和CT在年轮宽度检测和年轮数量检测的准确性和适用性。研究结果表明,CT在年轮宽度检测和年轮数量检测方面均优于DR,DR年轮宽度检测精度与CT相差在3%之内,DR较高的年轮数量检测错误率主要是其检测路径难以准确经过髓心而导致。采用CT和DR进行年轮检测时,应优先选取生长稳定、年轮特征清晰的树种作为检测对象,在树干无明显缺陷的区域实施检测,同时,检测高度的确定应充分考虑木材的生长特性,以确保检测结果的科学性与可靠性。
The width and number of annual rings are a good reference for dating the timber components in ancient architecture,which is needed to balance the requirements of cultural relics and measurement accuracy.Larch(Larix gmelinii var.principis-rupprechtii)and poplar(Populus deltoides×Populus cathayana)were commonly used for constructing buildings in ancient China.The wood samples were obtained at heights of 1200~1400 mm and 2400~2600 mm from these trees.The drill resistance(DR)and computed tomography(CT)methods were used and compared with the traditional photography method applied on transverse surface of wood.The results showed that CT was superior to DR in detection of both annual ring width and number.The accuracy of DR in tree-ring width detection differed from that of CT by less than 3%.The large error appeared in detection of annual ring number using DR,which was mainly due to the difficulty of its detection path accurately passing through the pith.When CT and DR were employed to measure annual rings,tree species with stable growth and clear annual rings should be prioritized,and the measurements should be carried out at the trunk without obvious defects.The detection height should be determined based on the growth characteristics of the wood.