中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 23年生大叶栎木材物理力学性质的初步研究 西北林学院学报 2007,22 (1) 115-118
Position: Home > Articles > Preliminary Researches of the Wood Physical-mechanical Properties of 23-year-old Castanopsis fissa Journal of Northwest Forestry University 2007,22 (1) 115-118

23年生大叶栎木材物理力学性质的初步研究

作  者：
梁宏温;黄寿先;覃亚丽;覃丽萍;黄明荣;陈仕静;唐凤生
单  位：
广西平果县海明林场;广西大学林学院
关键词：
大叶栎;木材物理性质;木材力学性质
摘  要：
对广西平果县海明林场23年生大叶栎木材的主要物理力学性质进行了测定和分析。结果表明:大叶栎木材的气干密度(含水率为12%)、基本密度和全干密度分别为0.583 g.cm-3、0.462 g.cm-3和0.507 g.cm-3,气干密度属于国产木材的中等级水平;径向、弦向和体积干缩系数分别为0.099%、0.183%、0.296%,湿胀率依次为4.106%、7.958%和12.627%,差异干缩为1.5-1.9,其尺寸稳定性较好;冲击韧性为52.12 kJ.m-2,端面、径面和弦面硬度分别为41.53 MPa、31.41 MPa和35.51 MPa,顺纹抗压强度为44.50 MPa,抗弯弹性模量和抗弯强度分别为12.63 GPa和127.31 MPa,径面和弦面顺纹抗剪强度分别为8.76 MPa和10.54MPa,抗劈强度依次为124.3 N.mm-1和138.6 N.mm-1。除冲击韧性和硬度较低外,大叶栎木材的主要力学强度均属于国产木材的中等级水平。
译  名：
Preliminary Researches of the Wood Physical-mechanical Properties of 23-year-old Castanopsis fissa
作  者：
LIANG Hong-wen1, HUANG Shou-xian1, QIN Ya-li1, QIN Li-ping1 HUANG Ming-rong2,CHEN Shi-jing2,TANG Feng-sheng2(1.College of Forestry,Guangxi University,Nanning,Guangxi 530005, China;2.Haiming Forest Farm,Pingguo,Guangxi 533001,China)
关键词：
Castanopsis fissa;physical properties of wood;mechanical properties of wood
摘  要：
The wood physical-mechanical properties were studied for 23-year-old Castanopsis fissa grown on Haiming forest farm of Pingguo,Guangxi.The results were as follows: the air-dried density(moisture content of wood is 12%),the basic density and the oven-dry density were 0.583 g·cm-3,0.462 g·cm-3 and 0.507 g·cm-3 respectively,the air-dried density was at the medium level in domestic wood species;the shrinkage coefficient of radial,tangential and volumetric were 0.099%,0.183% and 0.296% respectively,the maximum swelling were 4.106%,7.958% and 12.627% respectively;the ratio of tangential shrinkages to radial shrinkages was 1.5～1.9;the toughness was 52.12 kJ·m-2;the hardness of cross,radial and tangential section were 41.53 MPa,31.41 MPa and 35.51 MPa respectively;the compressive strength parallel to grain was 44.50 MPa;the modulus of elasticity in static bending and the bending strength were 12.63GPa and 127.31 MPa respectively;the shearing strength parallel to grain of radial and tangential were 8.76 MPa and 10.54 MPa respectively;the cleavage strength to grain of radial and tangential were 124.3 N·mm-1 and 138.6 N·mm-1 respectively.Except toughness and hardness,the main mechanical intensity of Castanopsis fissa was at the medium level in domestic wood species.

相似文章

导出引用
计量
文章访问数: 6
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46