基于红外热波技术的飞机复合材料缺陷定量测量研究

项目名称： 基于红外热波技术的飞机复合材料缺陷定量测量研究

项目编号： No.U1233120

项目类型： 联合基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 曾智

作者单位： 首都师范大学

项目金额： 40万元

中文摘要： 复合材料广泛应用于航空航天领域，由于其结构和工艺上的特殊性, 在制造、加工和使用过程中, 其内部容易产生诸如脱粘、分层、裂纹等缺陷, 不及时检修，将危及飞行安全。红外热波技术由于其大面积、非接触等特点，已广泛应用于复合材料分层、积液等缺陷检测。本课题拟利用脉冲闪光激励红外热波技术，着重研究现有测厚方法针对不同复合材料测厚应用适用性；揭示随机噪声对不同测厚方法计算精度的影响规律；研究缺陷尺寸对缺陷深度定量测量的影响；探索基于新的特征时间的测厚方法；研究通过二维热图定量测量缺陷界面尺寸的实用方法。项目预期成果对复合材料的损伤机理研究和工艺改进，以及新型复合材料的研制都具有重要意义，也将对在制造和使用过程中由于其它原因造成缺陷和损伤的大型复合材料构件等提供实用的检测、探伤与评估手段。

中文关键词： 复合材料；无损检测；红外热波；定量测量；

英文摘要： Composites are used widely in aerospace and aeronautics industries, debonding, delamination and cracks may be generated during the manufacturing, processing and in service because of their special structures and manufacturing technologies. It may endanger the flight safety if composites are not detected and repaired in time. Thermal wave imaging technology has been widely used for typical defects detection, such as delaminations and fluid ingress, in composites because of its characteristics of large area and non-contact detection. The project adopts pulsed flash thermography as experimental setup, emphasizes on the applicablity of current depth prediction methods for composites, reveals how does random noise affect the calculating precision for different methods, investigates the effect of defect size on the precision of defect depth prediciton, explores depth prediction method based on new characteristic time, developes a practical method for defect size measurement based on 2D thermographic image. The anticipated achivements of the project are significant for the investigation of damage mechanism and manufacturing technology improvement of composites, and the development of new composite materials. It can also supply a practical detection and evaluation method for large scale composite structures with defect

英文关键词： Composite；Nondestructive test；Thermography；Quantitative test；