Multi-information fusion of droplet transfer in pulsed GMAW

Electric and spectral information of droplet transfer in pulsed GMAW are collected by using picking system,the image of droplet transfer is also quasi-synchronously shot by high-speed camera.There is explicit characteristic of correspondence reflecting the droplet transfer among the electric,spectral and image information based on time information fusion.The reinto,the variation of spectral information is the greatest when the transfer appears and it can reach 47% of the total intensity.All of the necking down,droplet growing up and falling apart during droplet transfer of pulsed GMAW process can be found in spectral information.Further,DFT (Discrete Fourier Transform) analysis shows that the electric and spectral frequency information and the droplet transfer frequency also matches well.