کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6757913 | 1431210 | 2018 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A two-step damage assessment method based on frequency spectrum change in a scaled wind turbine tripod with strain rosettes
ترجمه فارسی عنوان
یک روش ارزیابی آسیب دو مرحله ای بر مبنای تغییر فرکانس طیف در یک سه پایه توربین با مقیاس پذیری با سوکت های سانتریفیوژ است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
The strain measurements have been obtained from a network of Fibre Bragg Grating (FBG) sensors bonded to the model. The damage detection is carried out in the first step using the root mean square deviation (RMSD) estimator. If the RMSD value is above a certain threshold, damage is said to be detected. Experimental results show that additional peaks appear in some frequency regions revealing vibration modes which are associated with damage in the structure. Applying the RMSD estimator to the regions where new peak has emerged it is possible to detect the damage. Once the damage is detected the damage isolation factor (DIF) is used for the damage isolation (level II damage detection). The DIF is based on the RMSD as well, and involves normalization using the rosette set values. Based on the results, it is seen that the DIF shows good localization performance. This good performance can be attributed to the ability of the parameter to overcome biases due to higher relative amplitude of vibration of some rosettes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Structures - Volume 61, September 2018, Pages 419-433
Journal: Marine Structures - Volume 61, September 2018, Pages 419-433
نویسندگان
Rohan Soman, Magdalena Mieloszyk, Wieslaw Ostachowicz,