红外热像技术由于其独特的优势，在土木工程中日益受到重视 , 但在适用范围、测试方法、结果和精度分析等诸多方面，仍有待进行更深入的理论和实验研究。用有限元仿真模拟的方法研究红外无损检测的过程，可以排除实际检测中的各种噪声及其它外界条件影响，研究各种热工参数对检测灵敏度的影响，为实际红外无损检测提供理论依据和技术参考。

 The infrared thermal imagery technology has received more and more attention in the civil engineering because of its unique advantages. But it is worthily further study in theory and experiment in the aspects of its applicable scope, test method, result and precision analysis and so on. Using finite element simulation method to study infrared non-destructive testing process can remove all kinds of noise and other external condition influences in the actual test.It also helps to study the influence of various thermal parameters on sensitivity testing. Thus it provides the theory basis and the technical reference for the actual infrared non-destructive testing.