Coded Excitation of the Fundamental Flexural Guided Wave in Coated Bone Phantoms

2017 ◽  
pp. 13-17
Author(s):  
X. Song ◽  
P. Moilanen ◽  
D. Ta
Keyword(s):  
Guided Wave ◽  
Coded Excitation

scholarly journals Coded excitation speeds up the detection of the fundamental flexural guided wave in coated tubes

AIP Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 095001 ◽  
Author(s):  
Xiaojun Song ◽  
Petro Moilanen ◽  
Zuomin Zhao ◽  
Dean Ta ◽  
Jalmari Pirhonen ◽  
...  
Keyword(s):  
Guided Wave ◽  
Coded Excitation

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.

Sign in / Sign up

Export Citation Format

Share Document