红外技术2011，Vol.33Issue(5)：275-280,6.
蜂窝结构积水的脉冲红外热像无损检测的传热分析
Heat Transfer Analysis of Pulsed Thermography for Water Detection in Honeycomb Structures
摘要
Abstract
Pulsed thermography (PT) is an advanced technique of detecting internal defects in materials, and expected to have an application in water ingress detection of honeycomb panels. Numerical simulation of PT to detect water ingress in honeycomb panels was carried out by using the finite element analysis software ANSYS, and the relations between information parameters (such as the maximum differential temperature and maximum contrast) and water content were explored. Three testing modes, i.e. detection from near-water side, detection from far-water side and detection as the honeycomb panel is vertically laid were analyzed.The results indicate that, in the three testing modes, both the maximum differential temperature and maximum contrast are an non-linear function of the water height, and increase with the water height. The detection sensitivity from near-water side is the highest, the detection sensitivity as the honeycomb panel is vertically laid takes second place, and the detection sensitivity from far-water side is the lowest. The water height can be evaluated inversely by the curves of the information parameters vs water height. The obtained results provide a theoretical support for water ingress detection and characterization of honeycomb structures by PT.关键词
无损检测/脉冲热像法/有限元分析/蜂窝结构/积水Key words
nondestructive testing/ pulsed thermography/ finite element analysis/ honeycomb structures/water ingress分类
矿业与冶金引用本文复制引用
郭兴旺,许文浩..蜂窝结构积水的脉冲红外热像无损检测的传热分析[J].红外技术,2011,33(5):275-280,6.基金项目
国家自然科学基金资助项目,编号:60672101,50975016 （）
航空基金资助项目,编号:2009ZD51045. （）
