کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
565806 | 875831 | 2007 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Third-order spectral characterization of acoustic emission signals in ring-type samples from steel pipes for the oil industry
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
پردازش سیگنال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Third-order spectral characterization of acoustic emission signals in ring-type samples from steel pipes for the oil industry Third-order spectral characterization of acoustic emission signals in ring-type samples from steel pipes for the oil industry](/preview/png/565806.png)
چکیده انگلیسی
Third-order cumulant spectra are used to characterize acoustic emission events in ring-type samples from steel pipes for the oil industry. A cut segment of chord allows the coupling between a sample and the mechanical excitation device. Diagonal bi-spectrum allows the separation of the primary (original) deformation from the reflections produced mainly in the suppressed chord. These longitudinal reflections can hardly be extracted via second-order methods, e.g. wavelet packets and power spectra, because they are partially masked by both Gaussian and non-Gaussian noise. Sample registers were acquired by wide frequency-range transducers (100–800 kHz) and digitalized by a 2.5 MHz, 8-bit ADC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volume 21, Issue 4, May 2007, Pages 1917–1926
Journal: Mechanical Systems and Signal Processing - Volume 21, Issue 4, May 2007, Pages 1917–1926
نویسندگان
Juan José González de la Rosa, Rosa Piotrkowski, José Ruzzante,