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首页> 外文会议>Proceedings of Third 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：刮取木材和刨花板的表面和边缘的特殊质量缺陷

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摘要

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：刨花板表面的质量是非常重要的参数，尤其是在家具行业。加工过程中在边缘处产生的深划痕和坑洼会区分家具板。经济和简单的表面粗糙度检查方法通常基于激光束散射效应。衍射光的指标是贝塞尔函数，每个缺陷都可以描述为光源的总和。在我们的实验中，我们观察到由于缺陷内部的多次光束反射，具有“孔状”几何特征的缺陷充当了光“陷阱”。划痕是这类缺陷。划痕和凹坑对光的吸收表现出非常强大的效果，通过简单的光学设置即可很好观察到。 “贝塞尔in”与通过实验观察到的散射光in之间的差异是划痕吸收的光能的量度。 “陷阱效应”的关键几何条件是缺陷深度的值大于10μm。

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