Time reversal data communications on pipes using guided elastic waves: Part II. Experimental studies

2011 ◽  
Author(s):  
Yuanwei Jin ◽  
Yujie Ying ◽  
Deshuang Zhao
Keyword(s):  
Time Reversal ◽  
Elastic Waves ◽  
Experimental Studies ◽  
Data Communications ◽  
Reversal Data

Time reversal enabled elastic wave data communications using sensor arrays

2013 ◽  
Vol 134 (5) ◽  
pp. 3980-3980 ◽  
Author(s):  
Yuanwei Jin ◽  
Yujie Ying ◽  
Deshuang Zhao
Keyword(s):  
Elastic Wave ◽  
Time Reversal ◽  
Sensor Arrays ◽  
Data Communications ◽  
Wave Data

Time reversal focusing of elastic waves in plates for an educational demonstration

2017 ◽  
Vol 141 (2) ◽  
pp. 1084-1092 ◽  
Author(s):  
Christopher Heaton ◽  
Brian E. Anderson ◽  
Sarah M. Young
Keyword(s):  
Time Reversal ◽  
Elastic Waves

A New Structural Health Monitoring System for Composite Plate

2011 ◽  
Vol 183-185 ◽  
pp. 406-410 ◽  
Author(s):  
Nai Zhi Zhao ◽  
Shi Yan
Keyword(s):  
Time Reversal ◽  
Composite Plate ◽  
Experimental Studies ◽  
Damage Diagnosis ◽  
Health Monitoring System ◽  
Active Approach ◽  
Input Signals ◽  
Non Destructive ◽  
Diagnosis Technique ◽  
Non Destructive Techniques

Damage detection in composite materials can be divided into active and passive approaches. The active approach is usually based on various non-destructive techniques utilizing actuators and/or receivers. Simple laser scans, revealing the change in Lamb wave response amplitudes, have been used to locate delamination and estimate its severity in a composite plate. The validity of the proposed method is demonstrated through experimental studies in which input signals exerted at piezoelectric (PZT) patches on a composite plate are successfully reconstructed by using the time reversal method. The ultimate goal of this study is to develop a reference-free damage diagnosis technique based on the time reversal process so that defects can be identified without relying on any past baseline data.

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