CAJ | 학술논문

热激励方式的合理选择是保证主动缺陷检测以及定量识别效果的前提。建立了一个用于分析不同热激励方式下缺陷试件红外检测表面温度分布规律的二维导热模型。针对几种常见热激励方式，通过改变加热面积、加热位置及热流密度来改变热激励的施加方式，系统地分析了带有缺陷的试件在施加不同热激励时红外检测表面的温度分布规律，发现在多个相邻边界面施加热激励时可获得较好的缺陷识别加热效果。
열격려방식적합리선택시보증주동결함검측이급정량식별효과적전제。건립료일개용우분석불동열격려방식하결함시건홍외검측표면온도분포규률적이유도열모형。침대궤충상견열격려방식，통과개변가열면적、가열위치급열류밀도래개변열격려적시가방식，계통지분석료대유결함적시건재시가불동열격려시홍외검측표면적온도분포규률，발현재다개상린변계면시가열격려시가획득교호적결함식별가열효과。
A good selection of thermal excitations is crucial to the active thermographic defect detection and identification work. A two-dimensional heat conduction model with inner defects was built in this paper to analyze the temperature distribution rules on the inspection surface. The applying way of thermal excitations was altered by changing the heating area, heating position and heating heat flux. The temperature distribution on the inspection surface of the test-piece was analyzed. It is found that better identification heating effect can be obtained when multiple boundaries with thermal excitation applied are adjacent.