Wavelet-based Denoising of EMAT Signals – from Development to Industrial Real-time Application
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چکیده
EMAT is used whenever a coupling medium like water shall be omitted. However, signal quality sometimes needs improvement, especially if surface quality of the product under test is poor. In this situation wall thickness measurements may be a challenging task. Signal filtering using wavelet based techniques proved to be suited well for improving SNR in situations with pulse-shaped signals. Therefore we developed a system for wavelet-filtering of UT signals in real-time under production
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تاریخ انتشار 2009