Adaptive dispersion compensation for guided wave imaging

Author(s):  
James S. Hall ◽  
Jennifer E. Michaels
Author(s):  
Gordon Dobie ◽  
Walter Galbraith ◽  
Charles MacLeod ◽  
Rahul Summan ◽  
Gareth Pierce

2021 ◽  
Author(s):  
Chengwei Zhao ◽  
Sunia Tanweer ◽  
Jian Li ◽  
Min Lin ◽  
Xiang Zhang ◽  
...  

Abstract Nonlinear ultrasonic guided waves have superior sensitivity of the early fatigue damage. This paper investigates the analysis of the second harmonics of Lamb waves in a free boundary aluminum plate, and the internal resonance conditions between the Lamb wave primary modes and the second harmonics. The Murnaghan’s model is implemented in a finite element (FE) analysis to describe the hyperelastic constitutive relation for nonlinear acoustic modeling. The second harmonics of s0 mode are actuated by a 60kHz Hanning-windowed tone burst. A guided wave signal processing platform is developed for tomographic imaging. The different stages of fatigue are reflected by the changes of third-order elastic constants (TOECs) in Murnaghan’s model. The reconstructed damage locations match well with the actual ones cross different degrees and depths of fatigue.


2022 ◽  
Vol 169 ◽  
pp. 108761
Author(s):  
Xiaocen Wang ◽  
Min Lin ◽  
Jian Li ◽  
Junkai Tong ◽  
Xinjing Huang ◽  
...  

2020 ◽  
Author(s):  
Songling Huang ◽  
Yu Zhang ◽  
Zheng Wei ◽  
Shen Wang ◽  
Hongyu Sun

2013 ◽  
Vol 58 ◽  
pp. 10-17 ◽  
Author(s):  
Gordon Dobie ◽  
S. Gareth Pierce ◽  
Gordon Hayward

Author(s):  
A. Golato ◽  
F. Ahmad ◽  
S. Santhanam ◽  
M. G. Amin
Keyword(s):  

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