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Based on the electrical activated plastic concept and mobile dislocation model, the mechanism of electromagnetically induced acoustic emission (EMAE) will be studied at a microscopic level. From the perspective of driving effect between electrons and dislocation, a new formulation and numerical calculation for the determination of AE radiation energy in electromagnetic loading will be derived to address...
The ability of acoustic emission detection is enhanced by electromagnetic stimulation with external magnetic field. Different magnetic field directions, which are generated by permanent magnet, produce various vibrations of defect itself. In this paper, the deformation characteristics of electromagnetically induced acoustic emission (EMAE) are studied by the finite element method (FEM). The experimental...
Electromagnetically induced acoustic emission (EMAE) technique is a new nondestructive testing (NDT). It does nondestructive detection with the effect of dynamic electromagnetic loading to generate a stress field stimulating stress waves from the defects. When EMAE is used to detect crack in the metal sheets, the EMAE signal is easy to be disturbed by various sources of noises, and the detectability...
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