کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10287049 | 504490 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A structural damage detection method using static noisy data
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
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چکیده انگلیسی
A structural damage detection algorithm using static test data is presented in this paper. Changes in the static response of a structure are characterized as a set of non-linear simultaneous equations that relate the changes in the static response to the location and severity of damage. Damage is considered as a reduction in the structural stiffness parameter (axial and/or flexural). An optimality criterion is introduced to solve these equations by minimizing the difference between the load vector of the damaged and the undamaged structure. The overall formulation leads to a non-linear optimization problem with non-linear equality and linear inequality constraints. A method based on stored strain energy in elements is presented for selecting the loading location. Measurement locations are selected based on the Fisher Information Matrix. Numerical results for a plane truss demonstrate the ability of this method in detecting damage in a given structure with the presence of noise in the measurements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 27, Issue 12, October 2005, Pages 1784-1793
Journal: Engineering Structures - Volume 27, Issue 12, October 2005, Pages 1784-1793
نویسندگان
F. Bakhtiari-Nejad, A. Rahai, A. Esfandiari,