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A power source designed for electromagnetically induced acoustic emission (EMAE) is developed. The power source is used to load eddy current as electromagnetic stimulation to produce acoustic emission signals. The core of power source system is the control circuit which is based on 32-bit digital signal processor (DSP) chip TMS320F2812. Trigger pulse can be regulated through the variation of the program...
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...
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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