| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
|
|
|
|
High-Frequency Guided Wave Scattering by a Partly Through-Thickness Hole Based on 3D Theory |
| ZHANG Hai-Yan1**, XU Jian1, MA Shi-Wei2 |
1School of Communication and Information Engineering, Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444
2Shanghai Key Laboratory of Power Station Automation Technology, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072
|
|
| Cite this article: |
|
ZHANG Hai-Yan, XU Jian, MA Shi-Wei 2015 Chin. Phys. Lett. 32 084301 |
|
|
|
|
Abstract We present a theoretical investigation of the scattering of high frequency S0 Lamb mode from a circular blind hole defect in a plate based on the 3D theory. The S0 wave is incident at the frequency above the A1 mode cut-off frequency, in which the popular approximate plate theories are inapplicable. Due to the non-symmetric blind hole defect, the scattered fields will contain higher order converted modes in addition to the fundamental S0 and A0 modes. The far-field scattering amplitudes of various propagating Lamb modes for different hole sizes are inspected. The results are compared with those of lower frequencies and some different phenomena are found. Two-dimensional Fourier transform (2DFT) results of transient scattered Lamb and SH wave signals agree well with the analytical dispersion curves, which check the validity of the solutions from another point of view.
|
|
|
Received: 06 May 2015
Published: 02 September 2015
|
|
| PACS: |
43.20.+g
|
(General linear acoustics)
|
| |
43.35.+d
|
(Ultrasonics, quantum acoustics, and physical effects of sound)
|
|
|
|
|
|
[1] McKen P, Yaacoubi S, Declercq N F, Ramadan S and Yaacoubi W K 2014 Ultrasonics 54 592
[2] Zhang H Y, Yao J C and Ma S W 2014 Chin. Phys. Lett. 31 034301
[3] Zhang H Y, Yu J B, Wang R and Ma S W 2014 Chin. Phys. Lett. 31 084301
[4] Diligent O, Grahn P, Cawley P and Lowe M J S 2002 J. Acoust. Soc. Am. 112 2589
[5] Grahn T 2003 Wave Motion 37 63
[6] Cegla F B, Rohde A and Vedit M 2008 Wave Motion 45 162
[7] Moreau L, Caleap M, Velichko A and Wilcox P D 2011 Wave Motion 48 586
[8] Moreau L, Caleap M, Velichko A and Wilcox P D 2012 Wave Motion 49 375
[9] Ng C T, Vedit M, Rose L R F and Wang C H 2012 J. Sound Vib. 331 4870
[10] Chan H, Masserey B and Fromme P 2015 Smart Mater. Struct. 24 025037
[11] Alleyne D N and Cawley P 1992 IEEE Trans. Ultrason. Ferroelectr. Freq. Control 39 381 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
