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在近三十年来,基于各类测试数据对工程结构发展有效的结构损伤在线诊断技术取得了长足的进步,由于该领域的研究成果数量过于庞大,论文将仅限于对利用结构动态数据进行在线损伤诊断的技术进行介绍和总结.文章主要涵盖了两方面的内容:首先介绍利用结构低频动态信号进行土木、航空航天等领域内的大型复杂结构的各类在线诊断技术,特别重点介绍利用结构低频振动数据信息进行损伤诊断的理论、方法与应用;其次介绍利用结构高频动态信号,进行结构在线损伤诊断与监测的技术,主要详细介绍近十多年来发展起来的超声导波技术及其应用.论文分析和介绍了各类技术的应用范围,及其在不同的情况下使用时的优缺点,并对该领域的未来方法与技术的发展趋势进行了展望.
In recent thirty years, based on all kinds of test data, the on-line structural damage diagnosis technology has been greatly improved. Due to the huge amount of research results in this field, the paper will be limited to online damage to structure dynamic data Diagnosis technology.This paper mainly covers two aspects: Firstly, it introduces all kinds of on-line diagnosis technology of large-scale and complex structures in civil, aerospace and other fields by using structural low-frequency dynamic signals, with particular emphasis on the use of structural low-frequency vibration The theory, method and application of data diagnosis for damage diagnosis are introduced. Secondly, the technology of structural on-line damage diagnosis and monitoring using structural high-frequency dynamic signals is introduced. The ultrasonic guided wave technology developed in the past ten years and its application are introduced in detail. The thesis analyzes and introduces the application range of various kinds of technologies and their advantages and disadvantages when they are used in different situations, and prospects the development trend of the future methods and technologies in this field.