Results of 3D fibre orientation in 3D around a Douglas knot and Initial data of the self-developed laboratory method

Since laser dot scanning only gives reliable information about the fibre orientation in the plane of board surfaces, simple assumptions are usually made to define the inner fibre orientation to model timber boards. Those models would be improved by better insight into real fibre deviation around knots. The present data is extracted from the laboratory method developed to evaluate growth layers geometries and fibre orientation, through successive planing, colour and laser dot scanning. The method is applied to a Douglas fir timber specimen. The proposed method provides data on fibre orientation in 3D with an accuracy that is relevant for the calibration of detailed models, more simply and feasibly than previously proposed methods.

由于激光点扫描（laser dot scanning）仅能获取板材表面平面内的纤维取向可靠信息，当前学界通常通过简化假设来确定木材板材建模所需的内部纤维取向。若能更深入地了解木材节疤周围真实的纤维偏移情况，即可优化此类建模方法。本数据集提取自一套专为评估生长层几何特征与纤维取向而开发的实验室方法，该方法通过连续刨削、色彩检测与激光点扫描完成相关检测流程。该方法已应用于花旗松（Douglas fir）木材试样。相较于此前提出的同类方法，本方法操作更简便、可行性更强，可获取三维纤维取向数据，其精度足以满足精细模型校准的相关需求。