Collinear and noncollinear multifrequency acousto-optic interaction in guided-wave Bragg cells

1996 ◽  
Author(s):  
Mario N. Armenise ◽  
Vittorio M. N. Passaro
Keyword(s):  
Guided Wave ◽  
Acousto Optic Interaction

Erratum: Guided‐wave acousto‐optic interaction in proton‐exchanged Y‐cut LiNbO3 [Appl. Phys. Lett. 48, 1579 (1986)]

1986 ◽  
Vol 49 (11) ◽  
pp. 677-677
Author(s):  
A. L. Dawar ◽  
S. M. Al‐Shukri ◽  
R. M. De La Rue
Keyword(s):  
Guided Wave ◽  
Acousto Optic Interaction

Guided‐wave acousto‐optic interaction on nonpiezoelectric substrates

1978 ◽  
Vol 49 (12) ◽  
pp. 5728-5730 ◽  
Author(s):  
S. K. Yao ◽  
R. R. August ◽  
D. B. Anderson
Keyword(s):  
Guided Wave ◽  
Acousto Optic Interaction

Guided‐wave acousto‐optic interaction in proton‐exchangedY‐cut LiNbO3

1986 ◽  
Vol 48 (23) ◽  
pp. 1579-1581 ◽  
Author(s):  
A. L. Dawar ◽  
S. M. Al‐Shukri ◽  
R. M. De La Rue
Keyword(s):  
Guided Wave ◽  
Acousto Optic Interaction

Guided-wave acousto-optic interaction on proton-exchanged lithium tantalate

1987 ◽  
Vol 23 (16) ◽  
pp. 849 ◽  
Author(s):  
J.F. Duffy∗ ◽  
S.M. Al-shukri ◽  
R.M. de La Rue
Keyword(s):  
Lithium Tantalate ◽  
Guided Wave ◽  
Acousto Optic Interaction

A compact guided-wave EMAT with pulsed electromagnet for ferromagnetic tube inspection

2020 ◽  
Vol 64 (1-4) ◽  
pp. 951-958
Author(s):  
Tianhao Liu ◽  
Yu Jin ◽  
Cuixiang Pei ◽  
Jie Han ◽  
Zhenmao Chen
Keyword(s):  
Power Plants ◽  
Signal To Noise Ratio ◽  
Small Diameter ◽  
Performance Testing ◽  
Guided Wave ◽  
High Signal ◽  
Receiver Coil ◽  
Signal To Noise ◽  
Corrosion Defects

Small-diameter tubes that are widely used in petroleum industries and power plants experience corrosion during long-term services. In this paper, a compact inserted guided-wave EMAT with a pulsed electromagnet is proposed for small-diameter tube inspection. The proposed transducer is noncontact, compact with high signal-to-noise ratio and unattractive to ferromagnetic tubes. The proposed EMAT is designed with coils-only configuration, which consists of a pulsed electromagnet and a meander pulser/receiver coil. Both the numerical simulation and experimental results validate its feasibility on generating and receiving L(0,2) mode guided wave. The parameters for driving the proposed EMAT are optimized by performance testing. Finally, feasibility on quantification evaluation for corrosion defects was verified by experiments.

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