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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...
In this paper, the finite element analysis of a recently developed electromagnetic acoustic emission (EMAE) which can be used for damage assessment of thin walled conducting structures has been reported. Due to the local high-intensity stress field generated by the electro-magnetically induced high-density current pulse, EMAE can locate small flaws or cracks in thin-walled structures non-destructively...
In this paper, the finite element analysis of a recently developed electromagnetic acoustic emission (EMAE) which can be used for damage assessment of thin walled conducting structures has been reported about eddy load. Due to the local high-intensity stress field generated by the electromagnetically induced high-density current pulse, EMAE can locate small flaws or cracks in thin-walled structures...
The high-current pulse generator which is used in non-destructive testing technique of electromagnetically induced acoustic emission (EMAE) is designed based on the economical efficiency and practicability. Using the energy storage of the capacitor, the pulse high current which the EMAE needs can be achieved by capacitor discharging instantaneous. Theoretical analysis and experiment of the generator...
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