定量红外热像法,作为一种无损、全场、实时、非接触的测试手段,不仅能够用于对材料内部缺陷的无损检测,而且能够对在役结构的疲劳损伤演化状态进行识别.定量红外热像法还能够快速预测材料的疲劳极限和S-N(stress-number of cycles)曲线,实验周期短,成本低.文中较为系统地综述了定量红外热像法的发展现状及应用,讨论了定量红外热像法应用过程中的几个重点问题.最后总结展望了定量红外热像法的未来发展方向及应用前景.
The quantitative infrared thermography, as a non-destructive, full-field, real-time and non-contact measurement technique, can not only be used to detect the internal defect of materials, but also can identify the fatigue damage evolution of structures in situ. Moreover, it can also be applied to rapidly predict the fatigue limit and the S-N (stress-number of cycles) curve of materials in a short test period with a low cost. This paper systematically reviews the current development and applications of the quantitative infrared thermography, and discusses some important problems in this research field. Finally, the future development and application of the quantitative infrared thermography are discussed.