Method for monitoring structural damage of conduit offshore platform
A technology for marine platform and structural damage, applied in the direction of material impedance, etc., can solve the problems of lack of monitoring and diagnosis methods, difficult to achieve damage location or quantification, and complex relationships, so as to reduce hidden safety hazards and operational risks, improve overall economic benefits, The effect of improving accuracy
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[0018] The basic principle of the present invention is that the appearance and development of damage lead to changes in the mechanical impedance of the structure, and the structural health diagnosis can be realized by monitoring the mechanical impedance of the structure. Although the mechanical impedance of the structure is difficult to obtain directly through experiments, it is possible to indirectly obtain the mechanical impedance of the structure by observing the electrical impedance of the piezoelectric material by using the forward and reverse piezoelectric effect and electromechanical coupling characteristics of the piezoelectric material attached to the base structure. impedance, and ultimately achieve structural health monitoring. The current commonly used electromechanical impedance damage monitoring method belongs to the point detection method, that is, the structural damage is detected by measuring the electromechanical coupling impedance of a single piezoelectric se...
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