摘要
CT在木质材料无损检测中应用日趋广泛,其密度检测是这一应用的关键技术之一。本文用CT对木材、竹材气干材密度进行了研究。通过分析气干材密度(0.303～1.061g.cm-3)与相应CT值的相互关系,获得24种木材气干材密度与相应CT值之间的线性模型,以及25种木质材料(24种木材及1种竹材)气干材密度与其CT值的混合数学线性模型,相关系数R均达0.99以上,实现了木质材料密度的高效连续精确无损检测,是木质材料CT技术量化检测的突破,为CT技术更好应用于木竹材科学研究与生产加工提供了技术支持和参考依据。
CT is widespread non-destructive detection technique for wood materials, and the density measurement is a key role during this application. In the present report, the use of CT for air-dry density measurement of wood and bamboo is described. The authors found that there were marked linear correlations between air-dry density（0. 303- 1. 061 g · cm^-3 ） of 24 kinds of woods and their respective CT value, as well as 25 kinds of lignin materials （including 24 kinds of woods and 1 kind of bamboo） and the CT value, both with correlation coefficient of 0. 99, which belonged to the CT technological breakthrough for wood quantitative detection. These research results show that CT is an appropriate way to measure density for wood and bamboo, and would provide technical support for CT used in the field of wood science research and wood processing.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2012年第7期1935-1938,共4页
Spectroscopy and Spectral Analysis
基金
国家"十一五"科技支撑计划课题(2008BADA9B03
2006BAD19B01)
国家重点基础研究发展计划项目(2010CB834301)
国家自然科学基金项目(10805071)
国际竹藤中心基本科研业务费(1632010002)资助
关键词
木材
竹材
气干密度
计算机断层扫描
无损检测
Wood
Bamboo
Air-dry density
Computed tomography（CT）
Non-destructive detection
