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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Tao Cheng Xiaochun Song Zhengwang Xu |
| Copyright Year | 2013 |
| Description | Author affiliation: Hubei Univ. of Technol., Wuhan, China (Xiaochun Song; Zhengwang Xu) || Eng. & Technol. Coll., Hubei Univ. of Technol., Wuhan, China (Tao Cheng) |
| Abstract | In order to improve the precision of defects location and recognition for pipe inspection, the wave-packet of guided-wave echo signals are exacted by Hilbert transformation, and the characteristic parameters of envelope curves for echo signals are defined. Based on the developed magnetostrictive guided-wave testing system, the effects of such excitation parameters as frequency, voltage and the pulse number on the echo wave-packet are mainly studied by experiments. The results demonstrate that the excitation frequency has great influence on echo signals, the echo signal with high signal to noise ratio (SNR) can be obtained in the frequency range with low dispersion. And the more the pulse number have, the larger the amplitude of echo wave-packet signals is and the wider the wave-packet duration is simultaneously. Moreover, the amplitude of echo signals are approximately linear with excitation voltages, but the voltage has little influence on the wave-packet duration. |
| Sponsorship | IEEE Harbin Sect. |
| Starting Page | 26 |
| Ending Page | 30 |
| File Size | 916021 |
| Page Count | 5 |
| File Format | |
| e-ISBN | 9781479913923 |
| DOI | 10.1109/MIC.2013.6757909 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-08-16 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Magnetostriction Magnetic sensors Excitation parameter Wave-packet Inspection Educational institutions Dispersion Hilbert transformation Signal to noise ratio Magnetostrictive guided wave |
| Content Type | Text |
| Resource Type | Article |
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