کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6755278 | 509547 | 2015 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Damping loss factor estimation of two-dimensional orthotropic structures from a displacement field measurement
ترجمه فارسی عنوان
تخمین عامل فرسایش از ساختارهای ارتودنسی دو بعدی از اندازه گیری میدان جابجایی
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This paper presents a damping loss factor estimation method of two-dimensional orthotropic structures. The method is based on a scanning laser vibrometer measurement. The dispersion curves of the studied structures are first estimated at several chosen angles of propagation with a spatial Fourier transform. Next the global damping loss factor is evaluated with the proposed inverse wave method. The method is first tested using numerical results obtained from a finite element model. The accuracy of the proposed method is then experimentally investigated on an isotropic aluminium panel and two orthoropic sandwich composite panels with a honeycomb core. The results are finally compared and validated over a large frequency band with classical methods such as the half-power bandwidth method (3Â dB method), the decay rate method and the steady-state power input method. The present method offers the possibility of structural characterization with a simple measurement scan.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 356, 10 November 2015, Pages 61-71
Journal: Journal of Sound and Vibration - Volume 356, 10 November 2015, Pages 61-71
نویسندگان
Raef Cherif, Jean-Daniel Chazot, Noureddine Atalla,