کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4925247 | 1431276 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nonlinear Lamb wave-mixing technique for micro-crack detection in plates
ترجمه فارسی عنوان
تکنیک اختلاط موج شکن غیرخطی برای تشخیص میکروکراک در صفحات
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کلمات کلیدی
میکرو کرک، اولتراسونیک غیرخطی اختلاط موج بره، طرف چپ،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
In engineering practice, failures due to fatigue cracks in metallic structures have always been difficult to predict. In our study, nonlinear Lamb wave-mixing was applied in the detection of micro-cracks in plates. The analysis of the nonlinear interaction of these waves with cracks of various lengths and widths was performed using finite-element simulations. The simulation results showed that the sideband at the sum frequency provide a sensitive means for micro-crack detection. Moreover, the sideband amplitudes show a monotonic increase with micro-crack length, but a decrease with micro-crack width. Experiments using Lamb wave-mixing were conducted on plates with fatigue cracks. The experimental results show that a proposed acoustic nonlinearity parameter related to the sideband at the sum frequency is sensitive to micro-cracks in plate, and is well correlated with the damage degree.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NDT & E International - Volume 85, January 2017, Pages 63-71
Journal: NDT & E International - Volume 85, January 2017, Pages 63-71
نویسندگان
Jiao Jingpin, Meng Xiangji, He Cunfu, Wu Bin,