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通过应力波测试仪对红松木材试件进行的检测试验,研究了木材轴向孔洞的分布、数量和端部孔洞的分布对应力波传播时间、传播速度的影响,并对孔径大小与应力波传播参数之间关系进行回归分析。试验结果表明,应力波传播时间与孔径大小、数量呈正相关,而应力波传播速度与孔径大小、数量呈负相关。端部孔洞对应力波传播参数没有显著影响。
Through the testing of Korean pine wood specimens by stress wave tester, the distribution and quantity of axial axial holes and the influence of the distribution of end holes on the propagation time and propagation velocity of stress wave were studied. The effects of pore size and stress wave The relationship between propagation parameters was analyzed by regression. The experimental results show that the propagation time of stress wave is positively correlated with the size and the number of holes, while the stress wave propagation speed is inversely related to the size and number of holes. End holes have no significant effect on the stress wave propagation parameters.