基于微钻阻力的落叶松弹性模量快速检测

以落叶松(Larix gmelinii)新鲜材、古建筑旧材为试验材料,运用微钻阻力仪对其内部的微钻阻力进行了快速检测,分析微钻阻力与两种落叶松材弹性模量之间的相关性及利用微钻阻力快速评估木材弹性模量的可行性.结果表明,对于新鲜落叶松材料,其微钻阻力检测值与弹性模量呈显著线性相关,可以利用微钻阻力较好地评估其弹性模量,且二者相关系数为0.831 9；对于古建筑的落叶松材料,利用微钻阻力快速检测弹性模量的精度则相对较差,二者相关系数为0.341 5,需结合其他检测指标综合进行判断.

Research on Rapid Detection of Larch Wood Modulus of Elasticity Based on Micro-Drilling Resistance

Aimed at finding the correlation between the micro-drilling resistance and modulus of elasticity of two larch wood and the feasibility to rapid assessment of the modulus of elasticity,the micro-drilling resistance meter was adopted to detect the internal situation of new and old larch wood.The results showed that the micro-drilling resistance detection value and elastic modulus presented a significant linear correlation for general larch materials.The micro-drilling could be used to better assess the modulus of elasticity,and the correlation coefficient were 0.831 9 between them.However,for the old larch,the precision of using micro-drilling resistance for rapid detection of the elastic modulus were relatively poor with the correlation coefficient of 0.341 5,it should combine with other testing indicators to get the reliable data.