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首页> 外文会议>International Symposium on Wood Machining >SCRATCH A SPECIAL QUALITY DEFECT OF SURFACE AND EDGE OF WOOD AND PARTICLEBOARD
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SCRATCH A SPECIAL QUALITY DEFECT OF SURFACE AND EDGE OF WOOD AND PARTICLEBOARD

机译：划伤木材和刨花板表面和边缘的特殊品质缺陷

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Quality of the surface of the particleboards is very important parameter especially in furniture industry. Deep scratches and craters arising at the edge during processing discriminate furniture boards. Economic and simple method of surface roughness inspection is commonly based on the effect laser beam scattering. The indicatrix of diffracted light is a Bessel function and every defect can be described as a sum sources of light. In our experiments we have observed that defects of characteristic "hole-like" geometry act as light "traps" due to multiple beam reflection inside the defect. Scratches are these type of defects. Absorbing of light by scratches and craters appears a very powerful effect, good observable with simple optical set up. The difference between a "Bessel indicatrix" and experimentally observed scattered light indicatrix is the measure of light energy absorbed in scratches. Critical geometrical condition of the "trap effect" is the value of defect deepness greater than 10 μm.
机译：刨花板表面的质量非常重要参数，尤其是家具行业。在处理鉴别家具板时，在边缘产生的深刻划痕和陨石坑。表面粗糙度检查的经济和简单方法通常基于效果激光束散射。衍射光的指示是贝塞尔功能，并且每个缺陷可以被描述为光源。在我们的实验中，我们观察到特征“孔状”几何形状的缺陷由于缺陷内的多个光束反射，这是光“陷阱”。划痕是这些类型的缺陷。通过划痕吸收光线和陨石坑似乎是一个非常强大的效果，简单的光学设置良好。 “贝塞尔指示灯”与实验观察到的散射光指示之间的差异是划痕吸收的光能的量度。 “陷阱效应”的临界几何状况是缺陷深度大于10μm的值。

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