TY - GEN
T1 - A method for optimizing excitation of electromagnetic ultrasonic Lamb wave
AU - Guofu, Zhai
AU - Tao, Jiang
AU - Lei, Kang
AU - Shujuan, Wang
PY - 2010
Y1 - 2010
N2 - Lamb wave has many applications in non-destructive testing as its advantages of the capability for long-range testing from a single location. Electromagnetic ultrasonic technique also has many advantages, such as being free of couplant and preconditioning. So, electromagnetic ultrasonic Lamb wave possesses great superiority in inspection. However, Lamb wave's characteristic of multi-modes and dispersion, like other guided waves, is a significant problem for practical applications. In order to obtain clear signals that can be reliably interpreted, a method for optimizing excitation of electromagnetic ultrasonic Lamb wave has been studied. Based on the fundamental characteristic equation of Lamb wave, the exciting equation has been deduced and the exciting curves have been plotted to instruct the design of electromagnetic acoustic transducer (EMAT) for choosing reasonable operating points in the curves. The optimization method verified by experiments can effectively remove the effect of multi-modes and dispersive and the zero- order modes are of great engineering value in real applications.
AB - Lamb wave has many applications in non-destructive testing as its advantages of the capability for long-range testing from a single location. Electromagnetic ultrasonic technique also has many advantages, such as being free of couplant and preconditioning. So, electromagnetic ultrasonic Lamb wave possesses great superiority in inspection. However, Lamb wave's characteristic of multi-modes and dispersion, like other guided waves, is a significant problem for practical applications. In order to obtain clear signals that can be reliably interpreted, a method for optimizing excitation of electromagnetic ultrasonic Lamb wave has been studied. Based on the fundamental characteristic equation of Lamb wave, the exciting equation has been deduced and the exciting curves have been plotted to instruct the design of electromagnetic acoustic transducer (EMAT) for choosing reasonable operating points in the curves. The optimization method verified by experiments can effectively remove the effect of multi-modes and dispersive and the zero- order modes are of great engineering value in real applications.
KW - EMAT
KW - Electromagnetic ultrasonic Lamb wave
KW - Exciting equation
KW - Operating point
UR - https://www.scopus.com/pages/publications/77956043487
U2 - 10.1109/ICIEA.2010.5515193
DO - 10.1109/ICIEA.2010.5515193
M3 - 会议稿件
AN - SCOPUS:77956043487
SN - 9781424450466
T3 - Proceedings of the 2010 5th IEEE Conference on Industrial Electronics and Applications, ICIEA 2010
SP - 104
EP - 108
BT - Proceedings of the 2010 5th IEEE Conference on Industrial Electronics and Applications, ICIEA 2010
T2 - 5th IEEE Conference on Industrial Electronics and Applications, ICIEA 2010
Y2 - 15 June 2010 through 17 June 2010
ER -