摘要
通过应力波测试仪对红松木材试件进行的检测试验,研究了木材轴向孔洞的分布、数量和端部孔洞的分布对应力波传播时间、传播速度的影响,并对孔径大小与应力波传播参数之间关系进行回归分析。试验结果表明,应力波传播时间与孔径大小、数量呈正相关,而应力波传播速度与孔径大小、数量呈负相关。端部孔洞对应力波传播参数没有显著影响。
The testing experiments to Korean pine wood samplings were conducted by using stress wave testing instrument. The impacts of the sizes and quantities of holes in axial and the distribution of holes in the end zone on propagation time and velocity of stress wave were studied, and the regressive analysis of the relationships between the sizes of hole diameter, hole quantities and stress wave propagation parameters was made. The results indicated that the propagation time of stress wave had positive correlation with hole diameter and hole quantities,and that the propagation velocity of stress wave had negative correlation with hole diameter and hole quantities. In addition, the sizes of hole in the end zone of wood had no significant impacts on stress wave propagation parameters.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2005年第1期30-31,共2页
Journal of Northeast Forestry University
基金
国际先进农业科学技术"948"项目 ( 2002 -39 )部分内容
高等学校博士学科点专项科研基金项目 ( 110 -413003 )部分内容。
关键词
红松
木材
结构缺陷
应力波
传播参数
Korean pine
Wood
Structure defaults
Stress wave
Propagation parameters
