2) Cutting disadvantages
锯切缺陷
3) Wood defects
木材缺陷
1.
Automatic wood defects recognition based on texture extraction and support vector machine technology
基于纹理提取和SVM技术的自动木材缺陷识别
4) wood defect
木材缺陷
1.
This paper first defined gray morphology filtering methods based on mathematical morphology, followed with examples of a wood defect image treated before and after open, as well as closed, filtering treatments.
介绍数学形态学中的灰度形态滤波方法,给出对木材缺陷图像进行闭、开运算处理后的仿真图像实例,利用木材缺陷图像截面灰度分布对处理效果进行分析。
5) material imperfections
材料缺陷
1.
Effects of dilation angle on failure process and mechanical behavior for rock specimen with random material imperfections;
扩容角对初始随机材料缺陷岩石试样破坏过程及力学行为的影响
2.
For heterogeneous rock with initial random material imperfections in plane strain compression,the effects of end-restraint on the failure process and the stress-strain curve are numerically modeled,using FLAC.
平面应变岩样在单方向施加载荷条件下,采用拉格朗日元法(FLAC)模拟了端面约束对具有初始随机材料缺陷的岩样破坏过程及应力-应变曲线的影响。
3.
In uniaxial plane strain compression,the failure processes,precursors,acoustic emissions and overall deformational characteristics of rock specimens with initially random material imperfections were modeled using FLAC.
在平面应变压缩条件下,采用FLAC模拟峰后脆性对含初始随机材料缺陷的岩样的破坏过程、前兆、声发射及全部变形特征的影响。
6) material imperfection
材料缺陷
1.
Numerical simulation of influence of material imperfection on strain localization;
材料缺陷对岩样变形局部化影响的数值模拟
2.
Effects of positions of material imperfection at right edge of rock specimen under plane strain compression on initiation and evolution of shear bands as well as stress-strain curves of rock specimen were modeled numerically by FLAC.
在平面应变压缩条件下,通过在岩样左边界靠近下端面的位置及右边界的不同位置预制材料缺陷,采用拉格朗日元法研究了材料缺陷位置不同时的剪切带图案启动、演变及试样的宏观力学行为。
补充资料：锯切
用边缘具有许多锯齿的刀具(锯条、圆锯片、锯带)或薄片砂轮等将工件或材料切出狭槽或进行分割的切削加工。锯切可按所用刀具形式分为弓锯切、圆锯切、带锯切（见图）和砂轮锯切等。①弓锯切是将锯条张紧在弓形的锯架上，并作直线往复运动，对工件进行切割,一般在弓锯床（见锯床）上利用动力锯切,也可用手工锯切。由于弓锯切在回程时不进行切削，故效率较低。②圆锯切是在圆锯床上由主轴带动圆锯片旋转对工件进行连续切割，效率较高。③带锯切是在带锯床上利用两个轮子把长而薄的环形锯带张紧，并驱动锯带作连续运动对工件进行切割。宽带锯切的效率高，切口窄,有取代弓锯切的趋势;窄带锯切适于切割扁平工件的外部曲线轮廓或成形的通孔。④砂轮锯切是用高速旋转的薄片砂轮切割工件，适于切割难加工金属材料。各种锯切方法的精度都不高，除窄带锯切外，一般用于在备料车间切断各种棒料、管料等型材。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条