Abstract
Nowadays, many non-destructive damage detection methods for determining the location and severity of damage in the field of health monitoring are considered in order to reduce the cost of maintenance and improve safety and reliability of structure. In this paper, damage specification is obtained by sensitivity-based updating approach. By applying changes on sensitivity matrix and using measured flexibility data, it is concluded that the results of proposed method are more accurate and efficient than the old modal flexibility methods. The mass modeling error and measurement error of flexibility and natural frequency are calculated in order to ensure the accuracy and robustness of proposed method for 2-D finite element truss and frame model. Close index, measuring the performance of the method, and the coefficient of variation, which represents the distribution of response, are used. Compared with Wang method, the proposed method is capable of accurately localizing and quantifying damage in all scenarios.
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Katebi, L., Tehranizadeh, M. & Mohammadgholibeyki, N. A generalized flexibility matrix-based model updating method for damage detection of plane truss and frame structures. J Civil Struct Health Monit 8, 301–314 (2018). https://doi.org/10.1007/s13349-018-0276-5
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DOI: https://doi.org/10.1007/s13349-018-0276-5