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Mathematical Problems in Engineering
Volume 2015, Article ID 312620, 7 pages
http://dx.doi.org/10.1155/2015/312620
Research Article

Study on the Thick-Walled Pipe Ultrasonic Signal Enhancement of Modified S-Transform and Singular Value Decomposition

1Key Laboratory of Fundamental Science for Advanced Machining, Beijing Institute of Technology, Beijing 100081, China
2School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471000, China

Received 29 August 2014; Revised 16 December 2014; Accepted 25 December 2014

Academic Editor: Giuseppe Rega

Copyright © 2015 Haichao Cai et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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