bullet Sensors & Transducers Journal

    (ISSN 1726- 5479)

205.767

2008 e-Impact Factor

25 Top Downloaded Articles

Best Selling Articles 2012

Journal Subscription 2013

Editorial Calendar 2013

Submit an Article

Editorial Board

Current Issue

S&T journal's cover

Sensors & Transducers Journal 2011

Sensors & Transducers Journal 2010

Sensors & Transducers Journal 2009

Sensors & Transducers Journal 2008

Sensors & Transducers Journal 2007

2000-2002 S&T e-Digest Contents

2003 S&T e-Digest Contents

2004 S&T e-Digest Contents

2005 S&T e-Digest Contents

2006 S&T e-Digest Contents

 

Best Articles 2011

 

 

 

Vol. 153, No. 6, June 2013, pp. 171-178

 

Bullet

 

An Improved Based on the Time-reversed Image Method of the Plate-like Structural Defects
 
1 Yan Liu, 2 Yuemin Wang, 2 Longxiang Zhu, 2 Fengrui Sun

1 College of Arts and Science, Naval University of Engineering, Hubei Wuhan, 430033, China

2 College of Ship & Power, Naval University of Engineering, Hubei Wuhan, 430033, China

1 E-mail: greerliu@126.com

 

Received: 19 April 2013   /Accepted: 14 June 2013   /Published: 25 June 2013

Digital Sensors and Sensor Sysstems

 

Abstract: Combined with the scanning of the probe array, this paper proposes an imaging method of the plate-like structural defects based on matching pursuit and the theory of time reversal. First, Match pursuit algorithm is used to the original signal processing of guided wave detection to improve signal quality, and provides a good foundation for signal reconstruction. Then it does algebraic difference of the signal before plate injury and the signal after injury to obtain the difference signal, and it uses the difference signal as time reversal excitation signal to obtain a set of time reversal signal. Last, the time-reversed signals are re-energized in the finite element model to simulate the actual plate, and damage imaging is realized in accordance with the principle of synthetic imaging. Experimental results show that this method can accurately extract the envelope of the signal, and more accurately detect the position of the defect, the range and other characteristics.

 

Keywords: Plate-like Structure, Lamb wave, Match pursuit, Time reversal, Ultrasonic image.

 

 

Buy this article online (it will be send to you in the pdf format by e-mail) or subscribe Sensors & Transducers journal

(12 issues per year plus special issues; 40 % discount for payment IFSA Members):

 

 

Sensors & Transducers journal subscription

450 $ US per year:

 

Buy this article for
14.95 $ US:

 

 
 

 

 
 

Alternatively we accept a money transfer to our bank account. Please contact for details: sales@sensorsportal.com

 

Download <here> the Library Journal Recommendation Form

 

 

 

 

 


1999 - 2013 Copyright , International Frequency Sensor Association (IFSA). All Rights Reserved.


Home - News - Links - Archives - Tools - Voltage-to-Frequency Converters - Standardization - Patents - Marketplace - Projects - Wish List - e-Shop - Sensor Jobs - Membership - Videos - Publishing - Site Map - Subscribe - Search

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Submit Press Release - Submit White Paper - Testimonies - Twitter - Facebook - LinkedIn