Numerical simulations of an electromagnetic acoustic transducer-receiver system for NDT applications

Simulation of an Electromagnetic Acoustic Transducer Array by Using Analytical Method and FDTD

“…Considerable works have been reported on EMAT modelling [26][27][28][29][30]. All of these papers divide EMAT modelling into two parts, electromagnetic simulation to obtain Lorentz force density and ultrasonic simulation to model the ultrasonic wave propagation due to Lorentz force.…”

Multiscale Modeling of Advanced Materials for Damage Prediction and Structural Health Monitoring

“…To further extend the theory, piezomagnetic coupling (i.e., magnetomechanical) was incorporated to provide the capability to model noncontact magnetic actuation and sensing as well as other electromagnetic NDE testing approaches . Because of the ability of piezomagnetic actuation and sensing to be performed without contact with the structure, these approaches can be used where piezoelectric actuation and sensing is difficult, such as in cases where sensors or actuators must be embedded in the structure or where contact is infeasible (Ludwig, You, and Palanisamy, 1993;Achenbach, 2000;Wilcox, Lowe, and Cawley, 2003;Jian et al, 2006;Nguyen et al, 2013). In addition to simulating piezomagnetic actuation and sensing, the new formulation can be used to model the dynamic behavior of electro-magneto-elastic composites where the combination of piezoelectric and piezomagnetic material phases results in an overall magnetoelectric coefficient greater than that of any single phase material (Li and Dunn, 1998;Aboudi, 2001;Lee, Boyd, and Lagoudas, 2005;Zhou, Wu, and Wang, 2005;Chen, Pan, and Chen;2007;Pang et al, 2008).…”

Theory and applications of high frequency broadband ultrasound via a thin layer in contact with a solid

“…To realize ultrasonic testing without the use of water, several techniques, e.g., the air-coupled capacitance transducer (Schindel, et al, 1995), (Alvarez-Arenas, et al, 2012), (Gan, et al, 2003), , (Robertson, et al, 2002) and (Oralkan, et al, 2003), the electromagnetic acoustic transducer (Houck, et al, 1967), (Ludwig, et al, 1993), (Ogi, et al, 1995) and (Ogi, et al, 2001), laser ultrasound (White, 1963), (Rose, 1984), (Liu, et al, 2002), (Green, 2004) and (Arias and Achenbach, 2004), and microphone array (Chu, et al, 2014), (Rigelsford and Tennant, 2006) and (Brandes and Benson, 2007), have been proposed. Several megahertz broadband ultrasound can be transmitted and received by the aircoupled capacitance transducer (Alvarez-Arenas, et al, 2012) and the electromagnetic acoustic transducer (Ogi, et al, 1995), and this type of transducers are applicable for inspection of high temperature objects (Gan, et al, 2003).…”