TY - GEN
T1 - Beam divergence calculation of an electromagnetic acoustic transducer for the non-destructive evaluation of plate-like structures
AU - Advani, Siddharth
AU - Van Velsor, Jason
AU - Rose, Joseph L.
PY - 2011/12/1
Y1 - 2011/12/1
N2 - Ultrasonic guided waves are now proving to be a viable method for real-world long-range Non-Destructive Evaluation (NDE) applications. In order to generate a specific guided wave mode optimally, knowledge of the sensor parameters becomes imperative. This paper attempts to experimentally measure the beam divergence in an Electro-Magnetic Acoustic Transducer (EMAT) that is used to generate Shear Horizontal (SH) guided waves in a mild steel plate. The commercial finite element package ABAQUS™ is then used to run 3D simulations to validate these experimental results. Based on these results, a planar defect study is also carried out. From all these investigations, the minimum degree of rotation of the EMAT can be set when used in a real-time ultrasonic guided wave omni-directional inspection system.
AB - Ultrasonic guided waves are now proving to be a viable method for real-world long-range Non-Destructive Evaluation (NDE) applications. In order to generate a specific guided wave mode optimally, knowledge of the sensor parameters becomes imperative. This paper attempts to experimentally measure the beam divergence in an Electro-Magnetic Acoustic Transducer (EMAT) that is used to generate Shear Horizontal (SH) guided waves in a mild steel plate. The commercial finite element package ABAQUS™ is then used to run 3D simulations to validate these experimental results. Based on these results, a planar defect study is also carried out. From all these investigations, the minimum degree of rotation of the EMAT can be set when used in a real-time ultrasonic guided wave omni-directional inspection system.
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U2 - 10.1109/SAS.2011.5739799
DO - 10.1109/SAS.2011.5739799
M3 - Conference contribution
AN - SCOPUS:84884604860
SN - 9781424480647
T3 - SAS 2011 - IEEE Sensors Applications Symposium, Proceedings
SP - 277
EP - 282
BT - SAS 2011 - IEEE Sensors Applications Symposium, Proceedings
T2 - 6th IEEE Sensors Applications Symposium, SAS 2011
Y2 - 22 February 2011 through 24 February 2011
ER -