کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4918576 | 1428770 | 2017 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterizing concrete surface notch using Rayleigh wave phase velocity and wavelet parametric analyses
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A multichannel Rayleigh wave (R-wave) measurement technique is proposed for evaluating concrete surface notches with different orientations. In this study, numerical simulations were first conducted to examine the propagation of R-waves in steel-reinforced concrete comprising of surface notch inclining at 30°, 90° and 150° against the horizontal plane. The change of R-wave amplitude was obtained through analysis by wavelet transform (WT) and fast Fourier transform (FFT) for determining theirs correlations with the notch depth-to-wavelength ratio. Experimental measurements on concrete samples were then carried out to validate the proposed technique and its performance, particularly for cases where notch depth is greater than R-wave wavelength. Good agreement was found between the experimental results and the numerical calculations, offering good possibility for using R-waves to assess vertical and inclined surface notches in reinforced concrete with the proposed technique for R-waves acquisition and analysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 136, 1 April 2017, Pages 627-642
Journal: Construction and Building Materials - Volume 136, 1 April 2017, Pages 627-642
نویسندگان
Foo Wei Lee, Hwa Kian Chai, Kok Sing Lim,