CAJ | 학술논문

运用红外热像技术对加工有孔洞的两个毛赤杨方材作内部缺陷无损检测。通过实验得出用红外热像仪准确检测该方材内部缺陷的条件：①采用双面法检测；②在热源距试样25cm的前提下，加热试样20min左右；③若缺陷在中间，则试样中央标识线上最高温度以下0．4℃范围可以准确反映出缺陷的大小，若在一倒则最高温度以下0．5℃范围可以准确反映缺陷的大小。在上述条件下应用此方法检测方材内部缺陷的误差范围为±5mm，相对误差为12．5％，说明使用红外热像糟术舯太耕肉都按陷拂轩枪测善可行的。
운용홍외열상기술대가공유공동적량개모적양방재작내부결함무손검측。통과실험득출용홍외열상의준학검측해방재내부결함적조건：①채용쌍면법검측；②재열원거시양25cm적전제하，가열시양20min좌우；③약결함재중간，칙시양중앙표식선상최고온도이하0．4℃범위가이준학반영출결함적대소，약재일도칙최고온도이하0．5℃범위가이준학반영결함적대소。재상술조건하응용차방법검측방재내부결함적오차범위위±5mm，상대오차위12．5％，설명사용홍외열상조술중태경육도안함불헌창측선가행적。
The infrared thermal imaging technology was applied to nondestructive testing to test internal holes of two Alnus sibirica lumbers. Resuits of the experiment indicate the optimal condition for accurate detection ： 1 ） using double-side detection ; 2 ） heat the sample for around 20 minutes with 25cm away from the heat; 3 ） If the defect is in the middle of the sample, it can be accurately reflected in the range of 0. 4℃ under the maximum temperature of the central identity line. And if it is in one side of the sample, it is precisely reflected in the range of 0.5℃. If the lumber is detected Under＇ all theses conditions, the error range is ± 5mm, with relative error of 12. 5%, which indicates the feasibility of applying infrared thermal imaging technology to wood internal defect testing.