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Abstract n the recent past thirty years, great progress has been made for various effective on-line monitoring technologies of engineering structural damage based on various measurement data. Due to countless research outcomes in this field, the present review article will be only limited to the introduction and summary on those on-line damage monitoring methods or technologies using structural dynamic data. It mainly contains the following two aspects. First, we introduce various technologies using low-frequency structural low-frequency dynamic signals to carry out the on-line monitoring of large-scale complex structures in various engineering fields, e.g., civil, aerospace, etc. Especially, we will focus on the fundamental theories, methods and applications of those technologies based on the low-frequency structural vibration data. Second, we will introduce various on-line technologies for structural damage identification and monitoring based on high-frequency structural high-frequency dynamic signals. We mainly introduce and describe those technologies based on ultrasonic guided waves and their applications in detail, which have been developed quickly in the recent past more than ten years. This article introduces and analyzes the application scopes of the various above above-mentioned various technologies. Moreover, for different application situations, their advantages and drawbacks are described. Finally, we give an outlook to the trend of development about some future methods and technologies in this field.
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Received: 31 August 2017
Published: 28 August 2017
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2017, Vol. 38 
