کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8130135 1523196 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fourier Transform Ultrasound Spectroscopy for the determination of wave propagation parameters
ترجمه فارسی عنوان
طیف سنجی سونوگرافی تبدیل فوریه برای تعیین پارامترهای انتشار موج
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
چکیده انگلیسی
The reported results for ultrasonic wave attenuation constant (α) in pure water show noticeable inconsistency in magnitude. A “Propagating-Wave” model analysis of the most popular pulse-echo technique indicates that this is a consequence of the inherent wave propagation characteristics in a bounded medium. In the present work Fourier Transform Ultrasound Spectroscopy (FTUS) is adopted to determine ultrasonic wave propagation parameters, the wave number (k) and attenuation constant (α) at 1 MHz frequency in tri-distilled water at room temperature (25 °C). Pulse-echo signals obtained under same experimental conditions regarding the exciting input signal and reflecting boundary wall of the water container for various lengths of water columns are captured. The Fast Fourier Transform (FFT) components of the echo signals are taken to compute k, α and r, the reflection constant at the boundary, using Oak Ridge and Oxford method. The results are compared with existing literature values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 73, January 2017, Pages 140-143
نویسندگان
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