Numerical simulation of electromagnetic acoustic transducers using distributed point source method

Directivity analysis of meander-line-coil EMATs with a wholly analytical method

“…For the UT simulation, an analytical ultrasonic model is built to calculate the Rayleigh waves' displacement produced by the Lorentz force densities. A semi-analytical technique, named distributed point source method (DPSM), was introduced by Placko and Kundu in 2001 [36], and it has been proved that DPSM is a highly efficient method for solving EMAT problems with the advantage of less mesh size over FEM and guarantees good results for the non-flat transducer face [37,38]. It will be worth comparing the results based on FEM and those based on DPSM in the future.…”

Modeling of Ultrasonic and Terahertz Radiations in Defective Tiles for Condition Monitoring of Thermal Protection Systems

“…Various improvements on DPSM were carried out to make this technique more accurate and/or efficient, such as G-DPSM and ESM [5] and transient DPSM analysis without going through Fast Fourier Transform [6]. Then this DPSM technique was used to solve different ultrasonic and electromagnetic field modeling problems for NDE (nondestructive evaluation) applications [5][6][7][8][9][10][11][12][13][14].…”

Introducing a user-friendly MATLAB-based application interface software (AIS) for DPSM modeling: applied to ultrasonic problems

“…DPSM (Distributed Point Source Method) is a mesh-free semi-analytical technique used to solve a variety of engineering problems in acoustic, magnetic, electrostatic and other engineering fields [1][2][3][4][5][6][7][8]. The input data are the material properties, the problem dimensions, boundary conditions of the involved elements like the sensors, and other relevant parameters like the frequency.…”