CAJ | 학술논문

利用应力波设备，分别对完好和含有不同大小空洞缺陷的大青杨径切板材样本进行了测试，分析了空洞对应力波传播时间的影响，探讨了含空洞木材中应力波的传播路径。结果表明：空洞对木材中应力波传播有显著影响；当应力波在木材中传播遇到空洞缺陷时，其传播路径会发生改变，会绕着空洞缺陷，沿空洞周围的木材进行传播。这导致应力波传播距离延长，传播时间增加。
이용응력파설비，분별대완호화함유불동대소공동결함적대청양경절판재양본진행료측시，분석료공동대응력파전파시간적영향，탐토료함공동목재중응력파적전파로경。결과표명：공동대목재중응력파전파유현저영향；당응력파재목재중전파우도공동결함시，기전파로경회발생개변，회요착공동결함，연공동주위적목재진행전파。저도치응력파전파거리연장，전파시간증가。
Stress wave device was employed to test Populus ussuriensis quarter-sawn board samples, intact and defective samples with different size cavities, respectively.We analyzed the effect of cavity on stress wave propagation time, and discussed the stress wave propagation path in wood with defects.The cavity has a significant effect on the propagation of stress wave in wood.When the stress wave arrives at the edge of cavity, its path will be changed and it seems to travel through the wood along the cavity, which leads to the extension of propagation distance and the increase of the propagation time.